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Chinese scientists achieve quantum computational advantage

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Quantum supremacy: China has successfully set up Jiuzhang 3.0, a quantum computer prototype that can perform Gaussian boson sampling 10^16 (10,000,000,000,000,000) times faster than the world's current fastest supercomputer Frontier.
 
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In an important benchmark for quantum computing, a record-breaking 51 qubits have been entangled together.

What are the differences between record breaking 51 qubits versus...

A 176-qubit quantum computing platform named Zuchongzhi went online for global users Wednesday night, which is expected to push forward the development of quantum computing hardware and its ecosystem.

176 qubits?

51 sounds like not a record-breaking number.
 
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What are the differences between record breaking 51 qubits versus...



176 qubits?

51 sounds like not a record-breaking number.
I am not sure, I think a quantum computer is often describe as having so many qubits, each qubit would be in a coherent or superposition state. That is, each of them can be in 0 or 1 state simulatneously for a specific time which would enable computation on those states simulaneoudly. Entanglement is not the same thing, it involve more then one qubit that changes to one qubit would affect the other qubit that is use in specific way to further enhance the computation. So 176 qubits doesn't mean entanglement of all 176 qubits, maybe in many group of different no. of qubit?
 
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