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: W41.00012 : Generating families of three-qubit gates from simultaneous two-qubit gates, part 2: experiment*
5:36 PM–5:48 PM
Presenter:
Christopher W Warren
(Chalmers Univ of Tech)
Authors:
Christopher W Warren
(Chalmers Univ of Tech)
Anton Frisk Kockum
(Chalmers Univ of Tech)
Jorge Fernández Pendás
(Chalmers Univ of Tech)
Shahnawaz Ahmed
(Chalmers Univ of Tech)
Giovanna Tancredi
(Chalmers Univ of Tech)
Amr Osman
(Chalmers Univ of Tech)
Janka Biznárová
(Chalmers Univ of Tech)
Xiu Gu
(Chalmers Univ of Tech)
Göran Johansson
(Chalmers Univ of Tech)
Jonas Bylander
(Chalmers Univ of Tech)
In this work, we extend our gate set to include a three-qubit gate which itself can implement a family of operations. This gate is performed by the simultaneous application of two microwave drives between our target states and a shared common level. Driving this lambda-system with equal strength tones generates an effective controlled interaction between the target states which acts as a combination of a CPhase and a SWAP-like gate. For this reason, we call this gate a Controlled-CZ-SWAP or CCZS. We demonstrate the implementation of this gate and benchmark its performance and the arbitrary control of the swapping angle.
*Knut and Alice Wallenberg Foundation, Wallenberg Centre for Quantum Technologies, Swedish Research Council, EU Flagship on Quantum Technology
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