2021/08/31 by J. P. Gaebler, John Gaebler, Charles H. Baldwin +13 · 2 citations
Computer Science · Physics and Astronomy · #Computer science #Crosstalk #Optics #Physics #Quantum #Quantum Computing Algorithms and Architecture #Quantum Information and Cryptography #Quantum computer #Quantum decoherence #Quantum mechanics #Quantum optics and atomic interactions #Qubit #Reset (finance) #quant-ph
paper · pdf · doi:10.1103/physreva.104.062440
published as Phys. Rev. A 104, 062440 (2021) · 13 pages, 7 figures
openalex publication_date 2021/12/27 · arxiv created 2022/01/03 · arxiv updated 2022/01/04 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Midcircuit measurement and reset are crucial primitives in quantum computation, but such operations require strong interactions with selected qubits while maintaining isolation of neighboring qubits, which is a significant challenge in many systems. For trapped ion systems, measurement is performed with laser-induced fluorescence. Stray light from the detection beam and fluorescence from the measured ions can be significant sources of decoherence for unmeasured qubits. We present a technique using ion micromotion to reduce these sources of decoherence by over an order of magnitude. We benchmark the performance with a different method, based on randomized benchmarking, to estimate the magnitude of crosstalk errors on nearby qubits. Using the Honeywell System Model H0, we demonstrate measurement and reset on select qubits with low crosstalk errors on neighboring qubits.