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Open AccessArticle

Multiphoton Controllable Transport between Remote Resonators

by Wei Qin 1,2 and Guilu Long 3,4,*
School of Physics, Beijing Institute of Technology, Beijing 100081, China
Center for Emergent Matter Science (CEMS), The Institute of Physical and Chemical Research (RIKEN), Wako-shi, Saitama 351-0198, Japan
State Key Laboratory of Low-Dimensional Quantum Physics and Department of Physics, Tsinghua University, Beijing 100084, China
Tsinghua National Laboratory for Information Science and Technology, Tsinghua University, Beijing 100084, China
Author to whom correspondence should be addressed.
Academic Editor: Jay Lawrence
Entropy 2016, 18(6), 179;
Received: 17 February 2016 / Revised: 4 May 2016 / Accepted: 9 May 2016 / Published: 27 May 2016
(This article belongs to the Special Issue Quantum Information 2016)
We develop a novel method for multiphoton controllable transport between remote resonators. Specifically, an auxiliary resonator is used to control the coherent long-range coupling of two spatially separated resonators, mediated by a coupled-resonator chain of arbitrary length. In this manner, an arbitrary multiphoton quantum state can be either transmitted through or reflected off the intermediate chain on demand, with very high fidelity. We find, on using a time-independent perturbative treatment, that quantum information leakage of an arbitrary Fock state is limited by two upper bounds, one for the transmitted case and the other for the reflected case. In principle, the two upper bounds can be made arbitrarily small, which is confirmed by numerical simulations. View Full-Text
Keywords: controllable transport; coupled-resonator chain; quantum information leakage controllable transport; coupled-resonator chain; quantum information leakage
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Qin, W.; Long, G. Multiphoton Controllable Transport between Remote Resonators. Entropy 2016, 18, 179.

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