Bulletin of the American Physical Society
APS March Meeting 2024
Monday–Friday, March 4–8, 2024; Minneapolis & Virtual
Session S47: Superconducting Bosonic Qubits
8:00 AM–11:00 AM,
Thursday, March 7, 2024
Room: 200CD
Sponsoring
Unit:
DQI
Chair: Benjamin D'Anjou, Univ Ulm
Abstract: S47.00007 : Demonstrating an erasure-detected entangling gate between dual-rail cavity qubits - part 2
9:36 AM–9:48 AM
Presenter:
Nitish Mehta
(Quantum Circuits, Inc)
Authors:
Nitish Mehta
(Quantum Circuits, Inc)
Taewan Noh
(Quantum Circuits, Inc)
Anirudh Narla
(Quantum Circuits, Inc.)
Tzu-Chiao Chien
(Quantum Circuits, Inc)
Pinlei Lyu
(Quantum Circuits, Inc)
James D Teoh
(Yale University / QCI)
José Aumentado
(Quantum Circuits, Inc)
S. Harvey Moseley
(Quantum Circuits, Inc)
Robert J Schoelkopf
(Yale University/ QCI)
Collaboration:
Yale-QCI Collaboration
In part 2 of this talk, we focus on the implementation of the remaining ingredient, a parametrizable entangling ZZ-gate [6], on our hardware. We describe the gate tune-up procedure and characterize both the error-detected gate fidelity and erasure rate. Our results show the dominant errors occur at the few percent level and are detected with high efficiency, leaving us with highly suppressed gate infidelities when no errors are flagged. These early demonstrations show dual-rail cavity qubits maintain the desired properties of erasure qubits during all necessary qubit operations, including the two-qubit gate.
[1] Teoh et al., PNAS 120 (41), e2221736120, 2023
[2] Chou et al., arXiv:2307.03169, 2023
[3] Lu, Maiti et al., Nat Comm 14, 5767, 2023
[4] Chapman, de Graaf et al., PRX Quantum 4, 020355, 2023
[5] Koottandavida, Tsioutsios et al. in prep.
[6] Tsunoda, Teoh et al., PRX Quantum 4, 020354, 2023
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