Quantum computing startup says it will leapfrog everybody
Summary
Quantum computing startup QuEra announced plans to build a much more powerful quantum computer by 2028 with over 10,000 qubits, aiming to support 256 error-corrected logical qubits. They also plan a follow-up machine in 2029 that will double the qubits and improve error correction, but significant challenges remain in reducing hardware errors to meet these goals.Key Facts
- QuEra currently has quantum hardware with about 260 qubits that have significant error rates.
- By 2028, QuEra plans to deliver a system with over 10,000 physical qubits to Amazon.
- This system aims to support 256 error-corrected logical qubits with a 99.9999% error-free operation rate.
- In 2029, QuEra promises a successor with twice the hardware qubits and over 1,000 logical qubits, targeting 99.9999999% error-free operation.
- QuEra uses neutral atoms held by lasers to form qubits, allowing more qubits by increasing laser capacity.
- Two academic labs that helped start QuEra have demonstrated a 3,000-qubit system and techniques to replace lost atoms during operations.
- Error correction depends on the number of physical qubits per logical qubit and the error rate of the hardware qubits.
- QuEra plans to reduce the number of hardware qubits per logical qubit from 40 in 2028 to 20 in 2029 while improving error rates, but it is not clear how they will achieve these improvements so quickly.
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