GigaQian
Region: US
Wednesday 20 May 2026 23:50:11 GMT
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E. :
I agree, China’s photonic qubits are clearly better than IBM’s transmon qubits. For transmons, they need to be cooled to nearly absolute zero, almost minus 273 degrees Celsius, to eliminate noise and interference. Even then, they still need between 1,000 to 10,000 physical qubits just to create one stable logical qubit because most of them are used for error correction. Photonic qubits, on the other hand, can operate at room temperature and don’t have that extreme cooling requirement. For photonic qubits, their biggest hurdle is photon loss. They're fighting photon loss in a few main ways right now: using better materials like silicon nitride waveguides that lose way less light, making components super efficient with better detectors, improved photon sources, and low-loss connections, smarter designs like hybrid spatial-temporal encoding that Jiuzhang 4.0 uses to reduce how many components photons have to travel through, and advanced techniques like GKP encoding and error correction codes that are specifically good at handling missing photons. It's still their biggest headache, but they're making steady progress on it. But topological qubits have the highest potential of all three. They store information in the braiding of quasiparticles, which makes them naturally resistant to errors instead of constantly fighting noise. Topological qubits have natural immunity to local noise because information is stored non-locally in the braiding of quasiparticles, built-in error protection, much longer coherence times, drastically fewer qubits needed, and precise gates through braiding. That means drastically fewer qubits are needed. You only need a handful instead of thousands. Also, you should look into something called the Thermodynamic Sampling Unit, or TSU. It's a game changer.
2026-05-21 05:27:10
144
Maya :
Is it really “quantum computing” or is it photonics?
2026-05-22 03:50:20
0
Fangirl66 :
Does not require cooling - I knew there had to be a better way! Thank you. FASCINATING
2026-05-21 00:09:52
68
V :
I should have stay consistent with quantum and mandarin since middle school. 🥲
2026-05-21 12:05:26
11
James Brown :
china is going to eat America's lunch!
2026-06-18 04:38:25
4
Poke Dad 🇨🇦 :
Goodbye bitcoin..
2026-05-25 23:18:35
10
Andy Hitz :
Stocks to invest in now?
2026-05-21 02:06:45
3
CCN :
My question is, if quantum computers solve problems that we’ve never been able to solve, how can we know the answer is correct?
2026-05-21 04:59:26
41
Jwest4fun :
Do they use large amounts of water?
2026-05-21 00:56:17
9
Melco :
What stock should I buy?
2026-06-03 16:34:25
2
Him! :
How they know the answer to the question that was ask?
2026-05-21 02:38:25
2
psych dad 😵💫 :
What can they do with a computer like this?
2026-05-21 02:56:48
5
Mr.120! :
Nice reporting GQ!!! Thanks!!!
2026-05-21 00:17:28
24
Ketchum :
I'm still trying to understand the difference between quantum computing and my MacBook Pro. Slowly getting there.
2026-05-21 15:30:01
5
backnod :
I love when you pop up on my fyp
2026-05-21 01:39:51
12
BadabingBadaboom :
good. may quantum computing hacks into bitcoin.
2026-05-21 06:14:17
0
Boside :
Thank you as always as breaking down the science
2026-05-21 04:41:27
8
Star Nomad :
I’m concerned about how crypto is getting adopted at scale and the security of that and fiat as well. We won’t have any digital security at all.
2026-05-21 15:47:27
5
pekka551 :
Can it run Doom?
2026-05-23 09:28:09
0
sprout :
So how does this help them economically, militarily, or in a scientific sphere?
2026-05-24 01:04:33
0
Nijhani :
What should we invest in?
2026-05-30 00:48:53
2
KalitheFlyingCinammonBun :
Do you feel they are largely ahead?? Or or they kept behind due to NVIDIA?
2026-06-18 04:35:06
0
AppSLAP :
What’s the best way to invest in Chinese Quantum stocks from the US? I have a handful of ones on our exchange but want Chinese exposure in this sector
2026-05-24 20:59:14
0
hel :
My Brain cannot absorb what your revealing🤦🏼♀️🤣
2026-05-21 01:29:38
5
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