Bulletin of the American Physical Society
APS March Meeting 2022
Volume 67, Number 3
Monday–Friday, March 14–18, 2022; Chicago
Session W41: Engineered Superconducting Qubit Interactions
3:00 PM–5:48 PM,
Thursday, March 17, 2022
Room: McCormick Place W-196C
Sponsoring Unit: DQI
Chair: Mollie Schwartz, MIT Lincoln Laboratory
Abstract: W41.00006 : Single Shot i-Toffoli Gate in Dispersively Coupled Superconducting Qubits*
4:24 PM–4:36 PM
Aneirin J Baker
Aneirin J Baker
Michael J Hartman
Here, we propose a single shot method for executing an i-Toffoli gate (a Toffoli gate combined with a contolled phase gate) using currently existing superconducting hardware. We show numerical evidence for an average gate fidelity over 97% (process fidelity over 98%) and a gate time of 500 ns for superconducting qubits interacting via tunable couplers. Whereas a Toffoli gate is a controlled-controlled-not gate on three qubits, our method can be extended to implement gates with more than two control qubits and to detect qubit cluster parity.
*This work has received funding from the European Union's Horizon 2020 research and innovation program under grant agreement No 828826 "Quromorphic", and the MSCA Cofund action No 847471 "Qustec", from the German Federal Ministry of Education and Research via the funding program quantum technologies - from basic research to the market under contract number 13N15684 and 13N15680 "GeQCoS", and support from EPSRC DTP grant EP/R513040/1.
The American Physical Society (APS) is a non-profit membership organization working to advance the knowledge of physics.
1 Physics Ellipse, College Park, MD 20740-3844
Editorial Office 1 Research Road, Ridge, NY 11961-2701 (631) 591-4000
Office of Public Affairs 529 14th St NW, Suite 1050, Washington, D.C. 20045-2001 (202) 662-8700