Bulletin of the American Physical Society
APS March Meeting 2019
Volume 64, Number 2
Monday–Friday, March 4–8, 2019; Boston, Massachusetts
Session C35: Hybrid Systems: Coupling Spin Qubits with Microwave Resonators
2:30 PM–5:18 PM,
Monday, March 4, 2019
BCEC
Room: 205B
Sponsoring
Unit:
DQI
Chair: Vanita Srinivasa, Sandia National Laboratories
Abstract: C35.00008 : Exploring the sweet-spot regime of singlet-triplet qubits coupled to a microwave resonator
4:18 PM–4:30 PM
Presenter:
Jose Carlos Abadillo-Uriel
(Department of Physics, University of Wisconsin-Madison)
Authors:
Jose Carlos Abadillo-Uriel
(Department of Physics, University of Wisconsin-Madison)
Mark Alan Eriksson
(Department of Physics, University of Wisconsin-Madison)
Susan Coppersmith
(Department of Physics, University of Wisconsin-Madison)
Mark G Friesen
(Department of Physics, University of Wisconsin-Madison)
In this work we explore this sweet-spot regime, which provides both resilience to charge noise and strong dipolar coupling to the resonator. We analyze the trade-offs between strong coupling, relaxation, dephasing, and leakage to the (0,2) singlet state, and we maximize the resulting gate fidelities. We identify a wide window in parameter space over which the qubit-resonator system can achieve two-qubit gate fidelities above 95%.
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