Remote Quantum Information Concentration Via Weak Cross-Kerr Nonlinearity

  title={Remote Quantum Information Concentration Via Weak Cross-Kerr Nonlinearity},
  author={Pinshu Rui and Wen Zhang and Yanlin Liao and Ziyun Zhang},
  journal={International Journal of Theoretical Physics},
By utilizing the quantum parity-check detectors (PCDs) based on the weak cross-Kerr nonlinearities, we propose a scheme for realizing the remote quantum information concentration (RQIC) with the quantum channel of four-photon bound entangled state. After the PCDs and single-photon operations, quantum information initially distributed in three spatially separated photons is concentrated back to a single photon without performing any global operations. The success probability of the scheme is… CONTINUE READING