Optimal control of two qubits via a single cavity drive in circuit quantum electrodynamics
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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 | ||||||||||||||||||
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| Subjects : | Physics | ||||||||||||||||||
| Divisions : | Faculty of Engineering and Physical Sciences > Physics | ||||||||||||||||||
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| 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. | ||||||||||||||||||
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| 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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