Bulletin of the American Physical Society
54th Annual Meeting of the APS Division of Atomic, Molecular and Optical Physics
Volume 68, Number 7
Monday–Friday, June 5–9, 2023; Spokane, Washington
Session V01: Poster Session III (4:00pm-6:00pm, PT)
4:00 PM,
Thursday, June 8, 2023
Room: Exhibit Hall C
Abstract: V01.00077 : Experimental method for evaluating two-qubit gate infidelity due to noise
Presenter:
Elia Perego
(University of California, Berkeley)
Authors:
Elia Perego
(University of California, Berkeley)
Nicole S Greene
(UC Berkeley)
Hartmut Haeffner
(University of California, Berkeley)
For evaluating the impact of noise on the gate fidelity, we implemented a method based on the measure of the system spectral response when controlled noise is injected on purpose. We applied it on two trapped Ca+ ions as qubits, entangled by a light shift gate. Specifically, we injected noise both on the amplitude and the frequency of the laser driving the gate, thus generating both commuting and non-commuting terms with respect to the two-qubit gate hamiltonian. We measured the fidelity drop as a function of the applied noise frequency and used it to quantify the infidelity contribution due to noise.
[1] M. Kang, Phys. Rev. Applied 19, 014014 (2023)
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