Nonadiabatic detection of the geometric phase of the macroscopic quantum state with a symmetric SQUID

Wang Xiang-bin and Matsumoto Keiji
Phys. Rev. B 65, 172508 – Published 2 May 2002
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Abstract

We propose a type of nonadiabatic scheme to detect the geometric phase for the macroscopic state of a Josephson-junction system. After extending the scheme to the two-qubit cases, we provide a type of nonadiabatic geometric C-NOT gate that can play an important role in quantum computation.

  • Received 12 November 2001

DOI:https://doi.org/10.1103/PhysRevB.65.172508

©2002 American Physical Society

Authors & Affiliations

Wang Xiang-bin and Matsumoto Keiji

  • Imai Quantum Computation and Information project, ERATO, Japan Science and Technology Corporation, Daini Hongo White Building 201, 5-28-3, Hongo, Bunkyo, Tokyo 113-0033, Japan

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Vol. 65, Iss. 17 — 1 May 2002

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