Efficient entanglement concentration for arbitrary less-entangled NOON states

  • Authors:

  • Lan Zhou;Yu-Bo Sheng;Wei-Wen Cheng;Long-Yan Gong;Sheng-Mei Zhao

  • Affiliations:

  • College of Mathematics and Physics, Nanjing University of Posts and Telecommunications, Nanjing, China 210003 and Institute of Signal Processing Transmission, Nanjing University of Posts and Telec ...;Institute of Signal Processing Transmission, Nanjing University of Posts and Telecommunications, Nanjing, China 210003 and Key Lab of Broadband Wireless Communication and Sensor Network Technology ...;Institute of Signal Processing Transmission, Nanjing University of Posts and Telecommunications, Nanjing, China 210003 and Key Lab of Broadband Wireless Communication and Sensor Network Technology ...;College of Mathematics and Physics, Nanjing University of Posts and Telecommunications, Nanjing, China 210003 and Institute of Signal Processing Transmission, Nanjing University of Posts and Telec ...;Institute of Signal Processing Transmission, Nanjing University of Posts and Telecommunications, Nanjing, China 210003 and Key Lab of Broadband Wireless Communication and Sensor Network Technology ...

  • Venue:
  • Quantum Information Processing
  • Year:
  • 2013

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Abstract

We put forward an efficient entanglement concentration protocol (ECP) for arbitrary less-entangled NOON state. In the protocol, we resort to the weak cross-Kerr nonlinearity to complete this task. Different from other ECPs, this protocol can be reused to get a high success probability. We do not need to know the exact coefficients of the initial state. Moreover, we even do not need to know the exact photon number of the initial NOON state. This protocol may be useful and convenient in the current quantum information processing.