Entanglement and quantum state transfer between two atoms trapped in two indirectly coupled cavities

Entanglement and quantum state transfer between two atoms trapped in two indirectly coupled cavities We propose a one-step scheme for implementing entanglement generation and the quantum state transfer between two atomic qubits trapped in two different cavities that are not directly coupled to each other. The process is realized through engineering an effective asymmetric X–Y interaction for the two atoms involved in the gate operation and an auxiliary atom trapped in an intermediate cavity, induced by virtually manipulating the atomic excited states and photons. We study the validity of the scheme as well as the influences of the dissipation by numerical simulation and demonstrate that it is robust against decoherence. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Quantum Information Processing Springer Journals

Entanglement and quantum state transfer between two atoms trapped in two indirectly coupled cavities

Entanglement and quantum state transfer between two atoms trapped in two indirectly coupled cavities

Quantum Inf Process (2016) 15:2181–2191 DOI 10.1007/s11128-016-1262-7 Entanglement and quantum state transfer between two atoms trapped in two indirectly coupled cavities 1 1 1 Bin Zheng · Li-Tuo Shen · Ming-Feng Chen Received: 10 October 2015 / Accepted: 29 January 2016 / Published online: 15 February 2016 © Springer Science+Business Media New York 2016 Abstract We propose a one-step scheme for implementing entanglement generation and the quantum state transfer between two atomic qubits trapped in two different cavities that are not directly coupled to each other. The process is realized through engineering an effective asymmetric X–Y interaction for the two atoms involved in the gate operation and an auxiliary atom trapped in an intermediate cavity, induced by virtually manipulating the atomic excited states and photons. We study the validity of the scheme as well as the influences of the dissipation by numerical simulation and demonstrate that it is robust against decoherence. Keywords Quantum state transfer · Entanglement · Coupled cavity · XY model 1 Introduction Quantum computers implement computational tasks on the basis of fundamental quantum-mechanical principles, such as Shor’s quantum factoring [1] and Grover search algorithm [2], which show that quantum computers offer an enormous compu- tational speedup over the classical counterparts [3]. To build a quantum computer that can solve a practical problem, a large number of qubits must be assembled together. In this context, distributed quantum computing is introduced [4], which is an architecture thought of as a network of spatially separated local processors that contain only a few Bin Zheng 494615326@qq.com Li-Tuo Shen lituoshen@yeah.net Department of Physics, Fuzhou University, Fuzhou 350002, China 123 2182 B. Zheng et al. qubits. One of the key problems in the realization of distributed quantum computing is how to implement quantum logic...
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Publisher
Springer Journals
Copyright
Copyright © 2016 by Springer Science+Business Media New York
Subject
Physics; Quantum Information Technology, Spintronics; Quantum Computing; Data Structures, Cryptology and Information Theory; Quantum Physics; Mathematical Physics
ISSN
1570-0755
eISSN
1573-1332
D.O.I.
10.1007/s11128-016-1262-7
Publisher site
See Article on Publisher Site

Abstract

We propose a one-step scheme for implementing entanglement generation and the quantum state transfer between two atomic qubits trapped in two different cavities that are not directly coupled to each other. The process is realized through engineering an effective asymmetric X–Y interaction for the two atoms involved in the gate operation and an auxiliary atom trapped in an intermediate cavity, induced by virtually manipulating the atomic excited states and photons. We study the validity of the scheme as well as the influences of the dissipation by numerical simulation and demonstrate that it is robust against decoherence.

Journal

Quantum Information ProcessingSpringer Journals

Published: Feb 15, 2016

References

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