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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 38, Iss. 18 — Sep. 15, 2013
  • pp: 3639–3641

Quantum phase transition in fiber-coupled quantum networks

Zheng-Da Hu and Jing-Bo Xu  »View Author Affiliations

Optics Letters, Vol. 38, Issue 18, pp. 3639-3641 (2013)

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We explore the quantum criticality in a one-dimensional quantum network, where adjacent nodes are connected by a fiber and each node consists of a cavity doped with N two-level atoms. We investigate the phase diagrams for cases of different atom numbers on resonance by making use of the mean-field approximation and find that both the fidelity and entanglement entropy for the ground state have dramatic changes near the critical points. Finally, the photon population imbalance of adjacent cavities is analytically explored via the two-node quantum network as the forerunner of phase transition.

© 2013 Optical Society of America

OCIS Codes
(060.4250) Fiber optics and optical communications : Networks
(270.5580) Quantum optics : Quantum electrodynamics

ToC Category:
Quantum Optics

Original Manuscript: May 29, 2013
Revised Manuscript: July 30, 2013
Manuscript Accepted: August 14, 2013
Published: September 12, 2013

Zheng-Da Hu and Jing-Bo Xu, "Quantum phase transition in fiber-coupled quantum networks," Opt. Lett. 38, 3639-3641 (2013)

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