Logical Quantum Processor Based on Reconfigurable Atom Arrays

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Reconfigurable neutral-atom arrays implement logical qubits by moving atoms with SLMs and AODs, using Rydberg blockade CZ gates and mid-circuit readout. The group runs circuits on ~280–1,000 physical atoms, achieves 99.5% two-qubit fidelity across 60 qubits, uses mid-circuit readout and feedforward (~99.8% fidelity, ~500 μs), creates 48 logical qubits from small 3D codes, prepares logical GHZ states, runs hundreds of logical gates and gets XEB ≈0.7 after post-selection, showing logical operations can already outperform raw physical qubits.

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1. 0:00Logical quantum processors intro
2. 1:25Quantum error correction basics
3. 6:05Reconfigurable atom arrays
4. 8:12Neutral atom qubit control
5. 11:22Rydberg blockade & entanglement
6. 13:30Digital quantum circuits
7. 16:39First 1D cluster state
8. 20:32High-fidelity two-qubit gates
9. 21:58Toric code with atom arrays
10. 26:26Transversal CNOT gates
11. 34:32Single logical qubit fidelity
12. 37:40Parallel logical qubit ops
13. 41:58Mid-circuit readout & feedforward
14. 42:41Discrete gate set challenges
15. 45:103D codes for non-Clifford
16. 47:56Sampling with 12 logical qubits
17. 51:49Error detection & scaling
18. 53:33Quantum scrambling sims
19. 55:00Lessons from early logic
20. 57:07Path to medium-scale devices
21. 59:11Large-scale challenges
22. 1:00:16Measurement fidelity & errors
23. 1:02:22Hardware blocking & algorithms
24. 1:05:10Correlated errors & scaling
25. 1:08:39Zone arrangement & architecture
26. 1:10:23Classical I/O interface
27. 1:11:05Summary & future