Mid-circuit measurements on a single species neutral alkali atom quantum processor

Abstract

We demonstrate mid-circuit measurements in a neutral atom array by shelving data qubits in protected hyperfine-Zeeman sub-states while non-destructively measuring an ancilla qubit. Measurement fidelity was enhanced using microwave repumping of the ancilla during the measurement. The coherence of the shelved data qubits was extended during the ancilla readout with dynamical decoupling pulses, after which the data qubits are returned to mf = 0 computational basis states. We demonstrate that the quantum state of the data qubits is well preserved up to a constant phase shift with a state preparation and measurement (SPAM) corrected process fidelity of F = 97.0(5)%. The measurement fidelity on the ancilla qubit after correction for state preparation errors is F = 94.9(8)% and F = 95.3(1.1)% for |0> and |1> qubit states, respectively. We discuss extending this technique to repetitive quantum error correction using quadrupole recooling and microwave-based quantum state resetting.

v3: additional appendices with fidelity analysis added

References in corpus (18)

• Surface codes: Towards practical large-scale quantum computation
• Suppressing quantum errors by scaling a surface code logical qubit
• Demonstration of multi-qubit entanglement and algorithms on a programmable neutral atom quantum computer
• Tackling Systematic Errors in Quantum Logic Gates with Composite Rotations
• High-fidelity gates with mid-circuit erasure conversion in a metastable neutral atom qubit
• 2000-times repeated imaging of strontium atoms in clock-magic tweezer arrays
• Measurement as a shortcut to long-range entangled quantum matter
• Mid-circuit correction of correlated phase errors using an array of spectator qubits
• A long-lived Zeeman trapped-ion qubit
• Mid-circuit cavity measurement in a neutral atom array
• Fast Quantum State Control of a Single Trapped Neutral Atom
• Parallel low-loss measurement of multiple atomic qubits
• Mid-circuit qubit measurement and rearrangement in a ${}^{171}$Yb atomic array
• Fast non-destructive parallel readout of neutral atom registers in optical potentials
• A simple, passive design for large optical trap arrays for single atoms
• Randomized Benchmarking using Non-Destructive Readout in a 2D Atom Array
• Multi-scale architecture for fast optical addressing and control of large scale qubit arrays
• Nanoscale addressing and manipulation of neutral atoms using electromagnetically induced transparency

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