Optimal control of two qubits via a single cavity drive in circuit quantum electrodynamics

Allen, JL, Kosut, R, Joo, J, Leek, P and Ginossar, Eran (2017) Optimal control of two qubits via a single cavity drive in circuit quantum electrodynamics Physical Review A: Atomic, Molecular and Optical Physics, 95 (4), 042325.

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Abstract

Optimization of the fidelity of control operations is of critical importance in the pursuit of fault tolerant quantum computation. We apply optimal control techniques to demonstrate that a single drive via the cavity in circuit quantum electrodynamics can implement a high fidelity two-qubit all-microwave gate that directly entangles the qubits via the mutual qubit-cavity couplings. This is performed by driving at one of the qubits’ frequencies which generates a conditional two-qubit gate, but will also generate other spurious interactions. These optimal control techniques are used to find pulse shapes that can perform this two-qubit gate with high fidelity, robust against errors in the system parameters. The simulations were all performed using experimentally relevant parameters and constraints.

Item Type:	Article
Subjects :	Physics
Divisions :	Faculty of Engineering and Physical Sciences > Physics
Authors :	Name Email ORCID Allen, JL Kosut, R Joo, J Leek, P Ginossar, Eran e.ginossar@surrey.ac.uk
Date :	18 April 2017
Identification Number :	10.1103/PhysRevA.95.042325
Copyright Disclaimer :	Copyright 2017 American Physical Society. This is an arXiv version of the work.
Related URLs :	Publisher
Depositing User :	Symplectic Elements
Date Deposited :	29 Mar 2017 15:12
Last Modified :	19 Jul 2017 14:00
URI:	http://epubs.surrey.ac.uk/id/eprint/813884

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