WEBVTT

1
00:00:01.480 --> 00:00:05.599
<v Speaker 1>Welcome to the qure side Quantum Physics Podcast, an exploration

2
00:00:05.679 --> 00:00:10.880
<v Speaker 1>of the fundamental structure of reality where quantum laws govern matter, energy,

3
00:00:11.199 --> 00:00:16.239
<v Speaker 1>and information. Here, uncertainty is a feature, not a flaw,

4
00:00:16.719 --> 00:00:19.239
<v Speaker 1>and understanding begins with the smallest scales.

5
00:00:27.600 --> 00:00:30.160
<v Speaker 2>Imagine you're holding a computer processor right like, right in

6
00:00:30.199 --> 00:00:32.640
<v Speaker 2>the palm of your hand, and this chip has the

7
00:00:32.759 --> 00:00:39.399
<v Speaker 2>power to cure complex genetic diseases in a matter of days, or.

8
00:00:39.439 --> 00:00:43.520
<v Speaker 3>Unravel the most secure cryptographic codes on Earth in seconds.

9
00:00:43.520 --> 00:00:47.359
<v Speaker 2>Exactly. The potential is literally sitting right there. But uh,

10
00:00:47.479 --> 00:00:49.799
<v Speaker 2>if you actually look at it, and I mean literally,

11
00:00:50.000 --> 00:00:53.840
<v Speaker 2>if a single stray particle of ambient light bounces off it,

12
00:00:54.039 --> 00:00:55.200
<v Speaker 2>the whole thing shatters.

13
00:00:55.280 --> 00:00:57.079
<v Speaker 3>Yeah, Or if the temperature in the room changes by

14
00:00:57.119 --> 00:00:59.840
<v Speaker 3>even a fraction of a degree, the calculation is just

15
00:01:00.119 --> 00:01:01.439
<v Speaker 3>ruined instantly.

16
00:01:01.479 --> 00:01:04.719
<v Speaker 2>It's so frustrating. I mean, that is the almost absurd

17
00:01:04.840 --> 00:01:08.400
<v Speaker 2>reality of quantum computing today. We have this theoretical magic,

18
00:01:08.439 --> 00:01:11.680
<v Speaker 2>this unimaginable computational power, but it's trapped.

19
00:01:11.359 --> 00:01:14.519
<v Speaker 3>Right, trapped inside some of the most delicate, fragile hardware

20
00:01:14.599 --> 00:01:15.400
<v Speaker 3>ever conceived.

21
00:01:15.560 --> 00:01:17.840
<v Speaker 2>Right, And to keep these machines running, we have to

22
00:01:17.840 --> 00:01:21.719
<v Speaker 2>lock them inside these massive dilution refrigerators cooled to what

23
00:01:21.879 --> 00:01:23.760
<v Speaker 2>fractions of a degree above absolute zero.

24
00:01:23.920 --> 00:01:26.319
<v Speaker 3>It's a colder than deep space, which is just.

25
00:01:26.560 --> 00:01:29.840
<v Speaker 2>It's an unsustainable brute force way to protect something delicate.

26
00:01:30.560 --> 00:01:35.159
<v Speaker 2>But researchers at Chalmers University of Technology in Sweden they

27
00:01:35.200 --> 00:01:39.280
<v Speaker 2>proposed a completely different approach back in late twenty twenty five.

28
00:01:39.400 --> 00:01:41.799
<v Speaker 3>They did, Yeah, it's a fascinating pivot.

29
00:01:41.920 --> 00:01:45.560
<v Speaker 2>Instead of building a bigger, colder shield around the fragile parts,

30
00:01:45.840 --> 00:01:50.760
<v Speaker 2>they realized we could fundamentally redesign the atoms themselves by

31
00:01:51.879 --> 00:01:52.640
<v Speaker 2>making them.

32
00:01:52.599 --> 00:01:55.640
<v Speaker 3>Giant, which sounds like science fiction, I know, But the

33
00:01:55.640 --> 00:01:58.200
<v Speaker 3>problem they were trying to solve is honestly the single

34
00:01:58.239 --> 00:02:03.200
<v Speaker 3>biggest roadblock in modern fisths decoherence, right exactly, decoherence in

35
00:02:03.239 --> 00:02:07.359
<v Speaker 3>the quantum realm. That is the ultimate enemy. And to

36
00:02:07.439 --> 00:02:10.599
<v Speaker 3>really grasp why this new Chalmers architecture is such a

37
00:02:10.680 --> 00:02:13.280
<v Speaker 3>radical shift, kind of have to look at why these

38
00:02:13.319 --> 00:02:15.919
<v Speaker 3>systems are so painfully fragile in the first place.

39
00:02:15.960 --> 00:02:18.120
<v Speaker 2>Well, let's break that down. Because a normal computer bit

40
00:02:18.159 --> 00:02:20.680
<v Speaker 2>is simple, right, It's like a coin sitting on a table.

41
00:02:20.719 --> 00:02:22.759
<v Speaker 2>It's either heads or its tails, a one.

42
00:02:22.639 --> 00:02:25.400
<v Speaker 3>Or a zero, right, very binary, very stable.

43
00:02:25.120 --> 00:02:27.080
<v Speaker 2>Yeah, and it takes a lot of force to physically

44
00:02:27.080 --> 00:02:29.560
<v Speaker 2>flip that coin over, which is why your laptop doesn't

45
00:02:29.560 --> 00:02:32.680
<v Speaker 2>crash every time someone turns on a light switch. But

46
00:02:32.840 --> 00:02:37.199
<v Speaker 2>the fundamental building block of a quantum computer, equibit, operates

47
00:02:37.319 --> 00:02:40.919
<v Speaker 2>entirely differently. It relies on a state called superposition.

48
00:02:41.479 --> 00:02:44.199
<v Speaker 3>So if a normal bit is a coin sitting flat

49
00:02:44.240 --> 00:02:47.560
<v Speaker 3>on a table, a quibit is a coin spinning rapidly

50
00:02:47.599 --> 00:02:50.599
<v Speaker 3>in the air, just a blur exactly while it's spinning.

51
00:02:50.759 --> 00:02:53.599
<v Speaker 3>It isn't strictly heads or tails. It exists as this

52
00:02:53.719 --> 00:02:58.159
<v Speaker 3>blur of both probabilities simultaneously, and this superposition is what

53
00:02:58.240 --> 00:03:01.759
<v Speaker 3>allows a quantum computer to process multiple possibilities at the

54
00:03:01.759 --> 00:03:04.759
<v Speaker 3>exact same time rather than sequentially.

55
00:03:05.000 --> 00:03:05.319
<v Speaker 1>Wow.

56
00:03:05.560 --> 00:03:08.879
<v Speaker 2>Okay. And then there's the other crucial element, which is entanglement.

57
00:03:09.360 --> 00:03:11.639
<v Speaker 3>Right. You can link two or more of these spinning

58
00:03:11.680 --> 00:03:14.439
<v Speaker 3>coins together so deeply that if you interact with one,

59
00:03:14.759 --> 00:03:16.360
<v Speaker 3>the others instantly react.

60
00:03:16.120 --> 00:03:18.159
<v Speaker 2>No matter how far apart they are, right exactly.

61
00:03:18.599 --> 00:03:21.960
<v Speaker 3>Einstein famously called it scooky action at a distance. It

62
00:03:22.039 --> 00:03:25.759
<v Speaker 3>is the absolute foundation of complex parallel quantum math.

63
00:03:25.960 --> 00:03:29.080
<v Speaker 2>But keeping a coin spinning perfectly in the air requires

64
00:03:29.280 --> 00:03:34.560
<v Speaker 2>well absolute stillness, perpet isolation, yes, any environmental noise like heat,

65
00:03:34.599 --> 00:03:37.800
<v Speaker 2>which is really just the vibration of atoms where electromagnetic

66
00:03:37.800 --> 00:03:40.840
<v Speaker 2>static or that stray Photona mentioned. It acts like a

67
00:03:40.919 --> 00:03:44.039
<v Speaker 2>hand slapping the spinning coin down onto the table.

68
00:03:44.199 --> 00:03:46.520
<v Speaker 3>It forces the quibut to pick heads or tails.

69
00:03:46.719 --> 00:03:50.719
<v Speaker 2>Right, the superposition collapses, the entanglement breaks, and the calculation

70
00:03:50.840 --> 00:03:53.560
<v Speaker 2>is completely ruined. That's decoherence.

71
00:03:53.639 --> 00:03:57.439
<v Speaker 3>And the classical approach to stopping decoherence is well, it's

72
00:03:57.520 --> 00:04:00.599
<v Speaker 3>essentially trying to isolate the system from the entire universe.

73
00:04:00.840 --> 00:04:03.199
<v Speaker 2>Those massive refrigerators.

74
00:04:02.520 --> 00:04:05.719
<v Speaker 3>Yeah, we cool the processors to it near absolute zero,

75
00:04:06.360 --> 00:04:09.800
<v Speaker 3>and we also use incredibly heavy error correcting codes.

76
00:04:09.919 --> 00:04:11.759
<v Speaker 2>What does that actually mean in practice?

77
00:04:12.000 --> 00:04:16.000
<v Speaker 3>It means building hundreds of physical backup quibots just to

78
00:04:16.079 --> 00:04:20.000
<v Speaker 3>keep one single working quibot stable. It's incredibly inefficient.

79
00:04:20.279 --> 00:04:23.439
<v Speaker 2>It makes me think of imagine building a delicate house

80
00:04:23.439 --> 00:04:25.439
<v Speaker 2>of cards in the middle of a windstorm.

81
00:04:25.560 --> 00:04:26.519
<v Speaker 3>That's a good way to put it.

82
00:04:26.639 --> 00:04:29.759
<v Speaker 2>The traditional engineering solution has basically been to try and

83
00:04:29.800 --> 00:04:34.639
<v Speaker 2>build a billion dollar, perfectly sealed, climate controlled dome over the.

84
00:04:34.600 --> 00:04:38.199
<v Speaker 3>Cards, right, which works for a handful of cards. Yeah,

85
00:04:38.240 --> 00:04:40.040
<v Speaker 3>But if you want to scale up to millions of

86
00:04:40.079 --> 00:04:43.639
<v Speaker 3>quibots to build a truly powerful supercomputer.

87
00:04:43.319 --> 00:04:47.160
<v Speaker 2>The hardware overhead becomes impossible. The energy required to power

88
00:04:47.360 --> 00:04:51.360
<v Speaker 2>millions of domes, it's just astronomical, exactly.

89
00:04:51.439 --> 00:04:54.560
<v Speaker 3>So the Chalmers team shifted the entire paradigm. They asked

90
00:04:54.600 --> 00:04:55.360
<v Speaker 3>a different question.

91
00:04:55.639 --> 00:04:58.560
<v Speaker 2>Instead of building a better dome, what if we fundamentally

92
00:04:58.639 --> 00:05:00.920
<v Speaker 2>redesign the cards so they can't be blown over?

93
00:05:01.040 --> 00:05:04.800
<v Speaker 3>Precisely, they asked, what if we design an entirely new

94
00:05:04.879 --> 00:05:07.759
<v Speaker 3>kind of instrument, one that uses its own acoustics to

95
00:05:07.759 --> 00:05:10.720
<v Speaker 3>cancel out the noise. And their starting point for this

96
00:05:10.959 --> 00:05:13.279
<v Speaker 3>was artificial quantum emitters.

97
00:05:12.959 --> 00:05:16.879
<v Speaker 2>Which scientists have been studying for over a decade now, right, yeah,

98
00:05:16.959 --> 00:05:19.040
<v Speaker 2>quite a while. We should probably clarify when we say

99
00:05:19.079 --> 00:05:21.839
<v Speaker 2>atom in this context. We aren't talking about something you'd

100
00:05:21.839 --> 00:05:23.560
<v Speaker 2>find naturally on the periodic table.

101
00:05:23.600 --> 00:05:28.839
<v Speaker 3>Oh, definitely not. These are manufactured components. In practical terms,

102
00:05:28.920 --> 00:05:32.279
<v Speaker 3>they are often tiny superconducting circuits engineered on a chip

103
00:05:32.519 --> 00:05:34.079
<v Speaker 3>to behave identically to an atom.

104
00:05:34.279 --> 00:05:37.360
<v Speaker 2>So they aren't real atoms, but they act like them, right, They.

105
00:05:37.279 --> 00:05:40.720
<v Speaker 3>Have discrete energy levels. They absorb and emit microwave photons,

106
00:05:40.800 --> 00:05:43.680
<v Speaker 3>just like a natural atom absorbs light and they obey

107
00:05:43.839 --> 00:05:47.079
<v Speaker 3>all the bizarre rules of quantum mechanics. Okay, got it.

108
00:05:47.279 --> 00:05:52.240
<v Speaker 3>But a natural atom is incredibly small. When it interacts

109
00:05:52.240 --> 00:05:54.639
<v Speaker 3>with the light or sound in its environment, it acts

110
00:05:54.680 --> 00:05:58.560
<v Speaker 3>like a tiny microphone picking up audio at one single

111
00:05:58.720 --> 00:05:59.879
<v Speaker 3>microscopic point.

112
00:06:00.000 --> 00:06:01.959
<v Speaker 2>Oh okay, so it's very localized exactly.

113
00:06:02.480 --> 00:06:05.199
<v Speaker 3>But a giant atom connects to its environment in a

114
00:06:05.199 --> 00:06:10.800
<v Speaker 3>completely different way. It is engineered to couple to a waveguide.

115
00:06:10.120 --> 00:06:12.199
<v Speaker 2>Which is basically a channel carrying microwavelight.

116
00:06:12.319 --> 00:06:16.360
<v Speaker 3>Right, yes, exactly, But it couples to that waveguide at

117
00:06:16.480 --> 00:06:20.839
<v Speaker 3>multiple spatially separated points. Wow, okay, And because it spans

118
00:06:20.879 --> 00:06:24.360
<v Speaker 3>across these multiple connection points, the artificial atom can be

119
00:06:24.480 --> 00:06:27.600
<v Speaker 3>giant relative to the wavelength of the light it interacts with.

120
00:06:27.879 --> 00:06:30.000
<v Speaker 3>We are talking up to millimeters in size.

121
00:06:30.079 --> 00:06:33.040
<v Speaker 2>Wait, millimeters. So you could literally hold a single quantum

122
00:06:33.079 --> 00:06:35.360
<v Speaker 2>component in your hand and see it with your naked eye.

123
00:06:35.439 --> 00:06:39.720
<v Speaker 3>You could, which completely defies our everyday intuition about quantum mechanics.

124
00:06:39.800 --> 00:06:41.639
<v Speaker 2>Yeah, it's supposed to be invisible.

125
00:06:41.439 --> 00:06:45.360
<v Speaker 3>Exactly, And those multiple connection points, they're the secret to

126
00:06:45.399 --> 00:06:50.279
<v Speaker 3>its stability. In physics, we call the resulting effect self interference.

127
00:06:50.560 --> 00:06:55.079
<v Speaker 2>Okay, self interference. So Keeping with our acoustic analogy, imagine

128
00:06:55.079 --> 00:06:58.199
<v Speaker 2>you're yelling into a canyon, but instead of the sound

129
00:06:58.240 --> 00:07:00.680
<v Speaker 2>just drifting away, the canyon is design so the echo

130
00:07:00.759 --> 00:07:03.319
<v Speaker 2>bounces back perfectly right, because.

131
00:07:03.000 --> 00:07:05.680
<v Speaker 3>The giant atom interacts with the wave guide at multiple

132
00:07:05.720 --> 00:07:09.480
<v Speaker 3>separated points. The quantum wave it emits at the first point,

133
00:07:09.680 --> 00:07:12.240
<v Speaker 3>travels down the line and actually interacts with the atom

134
00:07:12.279 --> 00:07:14.000
<v Speaker 3>itself again at the second.

135
00:07:13.800 --> 00:07:16.560
<v Speaker 2>Point, So it literally hears its own echo before it

136
00:07:16.600 --> 00:07:17.439
<v Speaker 2>finishes speaking.

137
00:07:17.600 --> 00:07:20.560
<v Speaker 3>It does, and that echo isn't just a quirky acoustic trick.

138
00:07:20.920 --> 00:07:24.639
<v Speaker 3>It's a profound protective mechanism. How So, by engineering the

139
00:07:24.680 --> 00:07:27.879
<v Speaker 3>exact spacing of those connection points, physicists can ensure the

140
00:07:27.920 --> 00:07:31.560
<v Speaker 3>returning wave creates destructive interference. It acts as a shield.

141
00:07:31.680 --> 00:07:34.199
<v Speaker 2>Oh wow, So it actively suppresses the rate at which

142
00:07:34.240 --> 00:07:35.120
<v Speaker 2>the atom decays.

143
00:07:35.240 --> 00:07:39.120
<v Speaker 3>Exactly, It traps the fragile quantum information inside, protecting it

144
00:07:39.120 --> 00:07:42.800
<v Speaker 3>from the chaotic thermal noise outside. In technical terms, this

145
00:07:42.839 --> 00:07:44.639
<v Speaker 3>creates non Markovian dynamics.

146
00:07:44.879 --> 00:07:50.000
<v Speaker 2>Non Markovian which simply means the system has a memory, right.

147
00:07:50.240 --> 00:07:52.959
<v Speaker 3>Yes, exactly. The standard atom is entirely stuck in the

148
00:07:52.959 --> 00:07:55.560
<v Speaker 3>present moment. It reacts blindly to whatever.

149
00:07:55.360 --> 00:07:58.120
<v Speaker 2>Hits it, but a giant atom because of this continuous

150
00:07:58.160 --> 00:08:02.399
<v Speaker 2>loop of self interference. It's constantly influenced by its own

151
00:08:02.439 --> 00:08:03.399
<v Speaker 2>past emissions.

152
00:08:03.439 --> 00:08:06.240
<v Speaker 3>It uses its own history as a stabilizing anchor.

153
00:08:06.399 --> 00:08:10.000
<v Speaker 2>That is incredible. Okay, so the giant atom gives us

154
00:08:10.120 --> 00:08:13.920
<v Speaker 2>built in resistance to environmental noise. But a single stable

155
00:08:13.959 --> 00:08:17.439
<v Speaker 2>atom is still just a calculator.

156
00:08:16.920 --> 00:08:18.000
<v Speaker 3>Right, It's not a supercomputer.

157
00:08:18.160 --> 00:08:21.600
<v Speaker 2>To perform the complex math that quantum computing promises, you

158
00:08:21.639 --> 00:08:24.959
<v Speaker 2>need thousands or millions of these units working together seamlessly,

159
00:08:25.560 --> 00:08:29.639
<v Speaker 2>and controlling millions of giant atoms presents an entirely new

160
00:08:29.839 --> 00:08:30.879
<v Speaker 2>logistical nightmare.

161
00:08:30.920 --> 00:08:33.759
<v Speaker 3>Oh absolutely, Imagine trying to conduct an orchestra of a

162
00:08:33.799 --> 00:08:36.639
<v Speaker 3>million musicians, but instead of waving a baton, you have

163
00:08:36.679 --> 00:08:39.919
<v Speaker 3>to write a separate, highly complex set of individual instructions

164
00:08:39.919 --> 00:08:42.559
<v Speaker 3>for every single person, for every single note they play.

165
00:08:42.679 --> 00:08:45.960
<v Speaker 2>The sheer volume of wiring, the crosstalk between the cables,

166
00:08:46.000 --> 00:08:49.759
<v Speaker 2>the interference, it just becomes an unmanageable mess, which.

167
00:08:49.559 --> 00:08:52.720
<v Speaker 3>Brings us to the second innovation required for this architecture,

168
00:08:53.559 --> 00:08:54.360
<v Speaker 3>the super.

169
00:08:54.080 --> 00:08:55.919
<v Speaker 2>Anim the super adom. What exactly is.

170
00:08:55.840 --> 00:08:59.840
<v Speaker 3>That superatum is a collective quantum system. You take multiple atoms,

171
00:09:00.000 --> 00:09:03.399
<v Speaker 3>they're natural or artificial, and you entangle them internally so

172
00:09:03.519 --> 00:09:06.720
<v Speaker 3>intensely that they completely lose their individual identities.

173
00:09:06.840 --> 00:09:08.799
<v Speaker 2>WHOA, so they just merge.

174
00:09:08.840 --> 00:09:12.279
<v Speaker 3>They merge, they become a single, larger super entity sharing

175
00:09:12.320 --> 00:09:13.919
<v Speaker 3>the exact same quantum states.

176
00:09:14.039 --> 00:09:18.799
<v Speaker 2>So our orchestra section isn't fifty individual violins anymore. They're

177
00:09:18.799 --> 00:09:22.559
<v Speaker 2>so perfectly linked that they function as one giant, unified

178
00:09:22.600 --> 00:09:23.639
<v Speaker 2>instrument exactly.

179
00:09:23.919 --> 00:09:26.399
<v Speaker 3>And when an external force interacts with them, it doesn't

180
00:09:26.440 --> 00:09:29.480
<v Speaker 3>hit violin A or violin B. It interacts with the

181
00:09:29.600 --> 00:09:30.679
<v Speaker 3>entire collective at once.

182
00:09:30.799 --> 00:09:31.159
<v Speaker 2>I see.

183
00:09:31.279 --> 00:09:33.399
<v Speaker 3>So you can interest the whole group with a single command,

184
00:09:33.679 --> 00:09:37.559
<v Speaker 3>which drastically simplifies the control systems needed to operate the computer.

185
00:09:37.840 --> 00:09:41.600
<v Speaker 2>Okay, so we have two incredibly powerful concepts here. The

186
00:09:41.679 --> 00:09:45.120
<v Speaker 2>giant atom provides the acoustic shield, the self interference that

187
00:09:45.120 --> 00:09:49.080
<v Speaker 2>protects against noise, and the super atom provides the simplicity

188
00:09:49.080 --> 00:09:52.159
<v Speaker 2>allowing us to control a complex group as a single entity.

189
00:09:52.600 --> 00:09:56.840
<v Speaker 3>Yes, and the obvious yet incredibly difficult next step is

190
00:09:57.559 --> 00:09:59.240
<v Speaker 3>what happens when you fuse them together.

191
00:10:00.000 --> 00:10:03.720
<v Speaker 2>So that's the breakthrough from late twenty twenty five published

192
00:10:03.720 --> 00:10:04.480
<v Speaker 2>in Physical Reviewer.

193
00:10:04.679 --> 00:10:08.120
<v Speaker 3>That's the one led by a team including leydu jin Wang,

194
00:10:08.279 --> 00:10:13.360
<v Speaker 3>Anton Friskcocum, and Janine Splitstozer. They mapped out the mathematics

195
00:10:13.399 --> 00:10:15.639
<v Speaker 3>to assemble the hybrid giant superatom.

196
00:10:15.840 --> 00:10:19.279
<v Speaker 2>Okay, wait, hold on, I'm struggling with the logic here.

197
00:10:19.360 --> 00:10:20.399
<v Speaker 3>Okay, what's the issue.

198
00:10:20.559 --> 00:10:24.600
<v Speaker 2>Well, we just established that quibits are unbelievably delicate, right

199
00:10:24.679 --> 00:10:27.919
<v Speaker 2>like house of cards. Yes, and now the proposal is

200
00:10:27.960 --> 00:10:30.080
<v Speaker 2>to take a bunch of them, entangle them into this

201
00:10:30.279 --> 00:10:33.799
<v Speaker 2>massive superatom, and then poke more holes in the system

202
00:10:33.879 --> 00:10:37.080
<v Speaker 2>to connect them to the environment in multiple separate places

203
00:10:37.080 --> 00:10:38.039
<v Speaker 2>to make them giants.

204
00:10:38.159 --> 00:10:39.200
<v Speaker 3>I see where you're going with this.

205
00:10:39.279 --> 00:10:42.080
<v Speaker 2>But doesn't adding all that internal complexity and exposing the

206
00:10:42.120 --> 00:10:45.159
<v Speaker 2>system to the environment in more places just invite more noise.

207
00:10:45.519 --> 00:10:48.320
<v Speaker 2>It feels like building a submarine and then drilling extra

208
00:10:48.399 --> 00:10:50.080
<v Speaker 2>holes in the hall to make it safer.

209
00:10:50.440 --> 00:10:52.879
<v Speaker 3>It does sound like a paradox, but that is the

210
00:10:52.960 --> 00:10:56.039
<v Speaker 3>exact problem that Cholmer's team had to solve, and they

211
00:10:56.039 --> 00:10:58.919
<v Speaker 3>did it through the mathematics of something called dressed interference.

212
00:10:59.000 --> 00:11:00.000
<v Speaker 2>Dressed interference.

213
00:11:00.159 --> 00:11:04.600
<v Speaker 3>Yeah, when you strongly couple atoms together to form a superatom,

214
00:11:05.120 --> 00:11:08.000
<v Speaker 3>they don't just sit next to each other. Their individual

215
00:11:08.120 --> 00:11:12.720
<v Speaker 3>energy levels shift and merge. They become dressed states. Okay,

216
00:11:13.039 --> 00:11:16.159
<v Speaker 3>think of it like taking two tuning forks and pressing

217
00:11:16.159 --> 00:11:19.399
<v Speaker 3>them physically together. If you strike them, they no longer

218
00:11:19.480 --> 00:11:21.720
<v Speaker 3>ring with their individual isolated notes.

219
00:11:21.799 --> 00:11:25.480
<v Speaker 2>The physical connection forces them to vibrate together exactly.

220
00:11:25.519 --> 00:11:27.919
<v Speaker 3>It creates an entirely new blended frequency.

221
00:11:28.000 --> 00:11:31.960
<v Speaker 2>Okay, So the complex internal entanglement actually creates a highly

222
00:11:32.000 --> 00:11:34.320
<v Speaker 2>specific custom frequency.

223
00:11:34.399 --> 00:11:37.039
<v Speaker 3>And that custom frequency is the key. Remember the self

224
00:11:37.039 --> 00:11:40.679
<v Speaker 3>interference of the giant atom the protective echo in a

225
00:11:40.720 --> 00:11:43.639
<v Speaker 3>giant superatom. That echo isn't just bouncing off a single

226
00:11:43.679 --> 00:11:47.960
<v Speaker 3>atom anymore. It is interacting with this complex blended frequency

227
00:11:48.000 --> 00:11:50.919
<v Speaker 3>of the dressed collective. Oh and what the team discovered

228
00:11:51.000 --> 00:11:55.279
<v Speaker 3>is that this internal complexity is actually mathematically perfect. By

229
00:11:55.360 --> 00:11:58.879
<v Speaker 3>carefully tuning the spacing of the connection points and the

230
00:11:58.919 --> 00:12:02.440
<v Speaker 3>strength of how the atom are linked, the researchers achieved

231
00:12:02.480 --> 00:12:05.799
<v Speaker 3>programmable directional control over the interference.

232
00:12:06.000 --> 00:12:09.039
<v Speaker 2>So the complexity of the superatom essentially fine tunes the

233
00:12:09.080 --> 00:12:11.200
<v Speaker 2>protective echo of the giant atom.

234
00:12:11.480 --> 00:12:15.440
<v Speaker 3>It functions almost exactly like active noise canceling headphones, but

235
00:12:15.559 --> 00:12:19.120
<v Speaker 3>operating natively at the quantum level across an entire collective

236
00:12:19.120 --> 00:12:19.600
<v Speaker 3>of atoms.

237
00:12:19.639 --> 00:12:23.279
<v Speaker 2>Because noise canceling headphones don't just block sound, they listen

238
00:12:23.320 --> 00:12:26.440
<v Speaker 2>to the ambient noise and generate a perfectly inverted wave

239
00:12:26.519 --> 00:12:28.039
<v Speaker 2>to cancel it out exactly.

240
00:12:28.120 --> 00:12:30.960
<v Speaker 3>The giant super atom uses its dressed interference to provide

241
00:12:30.960 --> 00:12:34.320
<v Speaker 3>the exact mathematical degrees of freedom needed to cancel out

242
00:12:34.399 --> 00:12:37.919
<v Speaker 3>environmental static. This allows the system to perform what the

243
00:12:37.960 --> 00:12:41.840
<v Speaker 3>researchers call decoherence free transfers of entangled.

244
00:12:41.440 --> 00:12:45.120
<v Speaker 2>States ecoherence free. That's huge. That is the defining transition

245
00:12:45.159 --> 00:12:46.840
<v Speaker 2>point for this technology, isn't it?

246
00:12:46.840 --> 00:12:49.399
<v Speaker 3>It really is. We aren't just trying to cram more

247
00:12:49.440 --> 00:12:52.519
<v Speaker 3>fragile components into a freezing cold vacuum chamber and hoping

248
00:12:52.600 --> 00:12:57.360
<v Speaker 3>they survive. We are engineering a smart physics based stability

249
00:12:57.559 --> 00:12:59.440
<v Speaker 3>directly into the foundation.

250
00:12:59.440 --> 00:13:02.600
<v Speaker 2>Which means this isn't just abstract whiteboard math. I mean,

251
00:13:02.840 --> 00:13:05.720
<v Speaker 2>if you're waiting for the day when quantum computing actually

252
00:13:05.759 --> 00:13:09.399
<v Speaker 2>models a new life saving drug or protects your personal

253
00:13:09.480 --> 00:13:13.600
<v Speaker 2>data with unbreakable cryptography, this architecture is the blueprint that

254
00:13:13.679 --> 00:13:14.679
<v Speaker 2>gets us out of a lab.

255
00:13:14.879 --> 00:13:19.759
<v Speaker 3>Yes, it outlines several massive practical advantages for engineers trying

256
00:13:19.799 --> 00:13:20.559
<v Speaker 3>to build these.

257
00:13:20.399 --> 00:13:24.480
<v Speaker 2>Machines, decoherence suppression being the first one. Obviously, naturally, the.

258
00:13:24.440 --> 00:13:28.120
<v Speaker 3>Self interference provides a literal form of quantum memory, protecting

259
00:13:28.200 --> 00:13:31.679
<v Speaker 3>the information inherently. The system is vastly less sensitive to

260
00:13:31.759 --> 00:13:33.480
<v Speaker 3>thermal fluctuations.

261
00:13:32.840 --> 00:13:35.840
<v Speaker 2>So we might still need refrigeration, but the hardware inside

262
00:13:35.879 --> 00:13:38.440
<v Speaker 2>won't be so prone to catastrophic crashes every time a

263
00:13:38.519 --> 00:13:39.720
<v Speaker 2>stray particle hits it.

264
00:13:39.840 --> 00:13:43.840
<v Speaker 3>Exactly, and this inherent protection leads directly into a massive

265
00:13:43.879 --> 00:13:47.720
<v Speaker 3>advantage for how the computer actually calculates. The giant superatom

266
00:13:47.720 --> 00:13:52.720
<v Speaker 3>makes it significantly more efficient to generate, transfer and maintain entanglement.

267
00:13:52.639 --> 00:13:57.519
<v Speaker 2>Because instead of painfully trying to force isolated, fragile quibbits

268
00:13:57.559 --> 00:13:59.960
<v Speaker 2>to talk to each other one by one, the system

269
00:14:00.200 --> 00:14:02.679
<v Speaker 2>manages entanglement collectively and robustly.

270
00:14:02.919 --> 00:14:05.639
<v Speaker 3>Right. And another major benefit is that the physical footprint

271
00:14:05.639 --> 00:14:10.039
<v Speaker 3>of the processor shrinks dramatically. Leydu, one of the lead researchers,

272
00:14:10.200 --> 00:14:11.639
<v Speaker 3>pointed out how crucial this is.

273
00:14:11.879 --> 00:14:13.320
<v Speaker 2>How much does it shrink well?

274
00:14:13.480 --> 00:14:17.720
<v Speaker 3>A giant super atom allows quantum information from multiple quibbuts

275
00:14:18.000 --> 00:14:22.120
<v Speaker 3>to be stored and controlled within one unit. This completely

276
00:14:22.159 --> 00:14:26.799
<v Speaker 3>bypasses the need for the dense, incredibly complex surrounding circuitry

277
00:14:26.840 --> 00:14:27.679
<v Speaker 3>we currently use.

278
00:14:27.840 --> 00:14:30.559
<v Speaker 2>Oh right, because you no longer need a unique, perfectly

279
00:14:30.559 --> 00:14:33.000
<v Speaker 2>isolated wire for every single quibit.

280
00:14:32.759 --> 00:14:35.919
<v Speaker 3>Exactly, the wiring gets simpler, and the whole system becomes

281
00:14:36.000 --> 00:14:38.600
<v Speaker 3>infinitely easier to scale up from a few dozen quibuts

282
00:14:38.639 --> 00:14:40.840
<v Speaker 3>to the millions we need for commercial applications.

283
00:14:40.919 --> 00:14:42.960
<v Speaker 2>And it doesn't just improve what we already know how

284
00:14:42.960 --> 00:14:46.000
<v Speaker 2>to do right, it unlocks entirely new capabilities. I was

285
00:14:46.000 --> 00:14:48.519
<v Speaker 2>looking at Janine Splittstos's work on the team and they

286
00:14:48.559 --> 00:14:52.240
<v Speaker 2>realize the architecture allows for something called state selective chiral emission.

287
00:14:52.600 --> 00:14:57.360
<v Speaker 3>Yes, state selective chiral emission. It sounds complicated, but chiral

288
00:14:57.360 --> 00:15:00.879
<v Speaker 3>emission simply means the giant super atom can choose a

289
00:15:00.919 --> 00:15:03.679
<v Speaker 3>direction like left or right, right, it can send its

290
00:15:03.759 --> 00:15:06.720
<v Speaker 3>quantum information down the waveguide to the left or to

291
00:15:06.759 --> 00:15:09.840
<v Speaker 3>the right, and state selective means it makes that directional

292
00:15:09.919 --> 00:15:14.159
<v Speaker 3>choice dynamically based on its own internal quantum state.

293
00:15:14.360 --> 00:15:17.200
<v Speaker 2>That's like a built in traffic cop for quantum information.

294
00:15:17.399 --> 00:15:18.559
<v Speaker 3>That's exactly what it is.

295
00:15:18.600 --> 00:15:20.360
<v Speaker 2>Which is crucial because if we are going to build

296
00:15:20.399 --> 00:15:23.360
<v Speaker 2>a quantum Internet, a global network where information is shared

297
00:15:23.440 --> 00:15:27.720
<v Speaker 2>instantly and securely, we need an efficient way to route

298
00:15:27.840 --> 00:15:30.360
<v Speaker 2>data over long distances without destorying it.

299
00:15:30.399 --> 00:15:34.120
<v Speaker 3>And the giant superadom provides that routing mechanism. Naturally, we

300
00:15:34.159 --> 00:15:37.519
<v Speaker 3>wouldn't need a massive, separate network of fragile quantum switches

301
00:15:37.559 --> 00:15:40.559
<v Speaker 3>to direct the traffic. The emitter itself acts as the switch.

302
00:15:40.679 --> 00:15:41.519
<v Speaker 2>That's brilliant.

303
00:15:41.879 --> 00:15:45.639
<v Speaker 3>Anton Friskoccum, another key researcher noted that because the system

304
00:15:45.679 --> 00:15:48.559
<v Speaker 3>has a memory of its past interactions, it isn't just

305
00:15:48.639 --> 00:15:52.039
<v Speaker 3>reacting blindly. It adapts its routing based on its history.

306
00:15:52.120 --> 00:15:55.159
<v Speaker 2>It's just wild to think about. The theoretical heavy lifting

307
00:15:55.240 --> 00:15:59.080
<v Speaker 2>is basically complete. The math works, and because giant atoms

308
00:15:59.080 --> 00:16:01.879
<v Speaker 2>have already been success fully demonstrated in labs using these

309
00:16:01.879 --> 00:16:06.320
<v Speaker 2>superconducting circuits, the pathway to physically building a giant super

310
00:16:06.399 --> 00:16:08.039
<v Speaker 2>atom is really clear.

311
00:16:08.279 --> 00:16:10.519
<v Speaker 3>We are definitely moving from physics to engineering.

312
00:16:10.720 --> 00:16:14.080
<v Speaker 2>We are finally leaving behind the era of building massive,

313
00:16:14.399 --> 00:16:19.039
<v Speaker 2>impossible domes to protect fragile spinning cards. By leaning into

314
00:16:19.080 --> 00:16:22.480
<v Speaker 2>the strangest parts of quantum mechanics, using non local coupling,

315
00:16:22.799 --> 00:16:26.879
<v Speaker 2>memory effects and dressed interference, we are literally learning to

316
00:16:27.000 --> 00:16:28.679
<v Speaker 2>use the noise against itself.

317
00:16:28.919 --> 00:16:33.159
<v Speaker 3>Is a profoundly elegant, fault tolerant solution. We are forcing

318
00:16:33.159 --> 00:16:35.279
<v Speaker 3>the system to actively protect itself It.

319
00:16:35.240 --> 00:16:38.200
<v Speaker 2>Completely changes the timeline for when this technology will actually

320
00:16:38.240 --> 00:16:40.879
<v Speaker 2>arrive in our everyday lives. But it also leaves us

321
00:16:40.879 --> 00:16:44.799
<v Speaker 2>with a truly bizarre philosophical reality to consider. Also, well,

322
00:16:44.799 --> 00:16:47.279
<v Speaker 2>think about it. For a century, we've been taught that

323
00:16:47.320 --> 00:16:51.759
<v Speaker 2>the spooky rules of quantum mechanics, like superposition, entanglement, atoms

324
00:16:51.759 --> 00:16:54.360
<v Speaker 2>being in two places at once. All that was supposed

325
00:16:54.399 --> 00:16:57.360
<v Speaker 2>to only apply to the invisible subatomic.

326
00:16:56.879 --> 00:16:58.600
<v Speaker 3>World, right the microscopic realm.

327
00:16:58.720 --> 00:17:01.840
<v Speaker 2>The quantum realm was supposed to to be completely disconnected

328
00:17:01.879 --> 00:17:06.599
<v Speaker 2>from our everyday classical reality. But if engineers are successfully

329
00:17:06.599 --> 00:17:10.799
<v Speaker 2>building these artificial giant quantum systems, super entities that are

330
00:17:10.920 --> 00:17:13.519
<v Speaker 2>millimeters wide, that you can hold in your hand and

331
00:17:13.559 --> 00:17:17.319
<v Speaker 2>look at without a microscope, and that dynamically adapt based

332
00:17:17.359 --> 00:17:19.680
<v Speaker 2>on a memory of their past interactions, it blurs the

333
00:17:19.720 --> 00:17:24.119
<v Speaker 2>line exactly where exactly does the weird invisible quantum world

334
00:17:24.279 --> 00:17:27.680
<v Speaker 2>end and our everyday classical reality begin. If we can

335
00:17:27.799 --> 00:17:30.519
<v Speaker 2>literally see a quantum component functioning on a desk in

336
00:17:30.519 --> 00:17:33.279
<v Speaker 2>front of us, maybe the invisible world is finally bleeding

337
00:17:33.279 --> 00:17:33.759
<v Speaker 2>into ours