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Intel's 49-Qubit Chip Shoots for Quantum Supremacy

spectrum.ieee.org

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Re: Intel's 49-Qubit Chip Shoots for Quantum Supremacy

#11

Post by Strilanc »

Did they give any numbers on the quality of the qubits? For example, IBM's 20 qubit chip has 2-qubit operations with error rates on the order of 5% [1] (some pairs of qubits are better, some are worse). Quantum supremacy experiments require thousands of operations (tens of layers of parallel operations). Qubits with even a 1% error rate per operation just won't cut it.

1: https://youtu.be/T-8uuq7Izl8?t=26m58s "Experimental quantum computing at IBM" [26:58]

(Disclosure: I work on Google's quantum team.)

Re: Intel's 49-Qubit Chip Shoots for Quantum Supremacy

#13

Post by vtomole »

Strilanc wrote: post #11

Did they give any numbers on the quality of the qubits? For example, IBM's 20 qubit chip has 2-qubit operations with error rates on the order of 5% [1] (some pairs of qubits are better, some are worse). Quantum supremacy experiments require thousands of operations (tens of layers of parallel operations). Qubits with even a 1% error rate per operation just won't cut it. 1: https://youtu.be/T-8uuq7Izl8?t=26m58s "Experi…

> Did they give any numbers on the quality of the qubits?

No they didn't. I've also had problems finding the benchmarks for their 17 qubit processor. I would appreciate if someone could link them to me.

Re: Intel's 49-Qubit Chip Shoots for Quantum Supremacy

#14

Post by googletazer »

wejick wrote: post #12

What is it means for humanity?

Better drugs/more complex medicines should be possible. Chemical interactions are hard to do on classical computers (operating on 5D+ arrays), true quantum computers should be able to help with those computations.

Re: Intel's 49-Qubit Chip Shoots for Quantum Supremacy

#17

Post by tromp »

lostmsu wrote: post #8
wopwops wrote: post #5

Breaking Bitcoin With a Quantum Computer http://fortune.com/2018/01/06/breaking-bitcoin-cybersaturday... Quantum Resistant Ledger https://theqrl.org/

It is unknown if BQP >= NP or NP-complete

NP-completeness is a property of problems, while BQP is a complexity class (set of problems). If any NP-complete problem is in BQP, then NP is a subset of BQP.

But it's not even known whether BQP > P, so we could have P = BQP < NP.

Re: Intel's 49-Qubit Chip Shoots for Quantum Supremacy

#18

Post by wejick »

googletazer wrote: post #14
wejick wrote: post #12

What is it means for humanity?

Better drugs/more complex medicines should be possible. Chemical interactions are hard to do on classical computers (operating on 5D+ arrays), true quantum computers should be able to help with those computations.

Do you have easy material for me to understand how quantum computing enables that kind of things? And does it use clasic numerical method computing or using different kind of mathematical approach? Actually I'm not sure whether my question makes sense or not

Re: Intel's 49-Qubit Chip Shoots for Quantum Supremacy

#19

Post by dilippkumar »

wejick wrote: post #18
googletazer wrote: post #14

Earlier quoted context omitted.

Better drugs/more complex medicines should be possible. Chemical interactions are hard to do on classical computers (operating on 5D+ arrays), true quantum computers should be able to help with those computations.

Do you have easy material for me to understand how quantum computing enables that kind of things? And does it use clasic numerical method computing or using different kind of mathematical approach? Actually I'm not sure whether my question makes sense or not

I enjoyed reading this paper:

https://arxiv.org/pdf/0708.0261.pdf

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