Bulletin of the American Physical Society
APS March Meeting 2020
Volume 65, Number 1
Monday–Friday, March 2–6, 2020; Denver, Colorado
Session J16: Quantum Annealing and Optimization I
2:30 PM–5:30 PM,
Tuesday, March 3, 2020
Room: 201
Sponsoring
Unit:
DQI
Chair: Rolando Somma, Los Alamos National Laboratory
Abstract: J16.00003 : Finding optimized anneal paths in capacitively shunted flux qubits*
View Presentation
Abstract
Presenter:
Mostafa Khezri
(Univ of Southern California)
Authors:
Mostafa Khezri
(Univ of Southern California)
Jeffery Grover
(Northrop Grumman)
Daniel A Lidar
(Univ of Southern California)
This requires a careful characterization of the system and its behavior in response to control biases.
In this work we study a capacitively shunted flux qubit (CSFQ), and use spectroscopy and dispersive readout to extract system parameters and model the qubit.
We confirm the multi-level structure of the circuit model of the CSFQ by annealing the qubit through small gaps and observing quantum signatures of level crossing between different eigenenergies.
We then use our model to mitigate the effect of noise by finding optimized anneal paths that minimize the transition width between the flux qubit's left and right wells.
*This material is based upon work supported by the Intelligence Advanced Research Projects Activity (IARPA) through the Army Research Office (ARO) Contract No. W911NF-17-C-0050.
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