Single-photon-assisted entanglement concentration of a multiphoton system in a partially entangled W state with weak cross-Kerr nonlinearity

@article{Du2012SinglephotonassistedEC,
  title={Single-photon-assisted entanglement concentration of a multiphoton system in a partially entangled W state with weak cross-Kerr nonlinearity},
  author={Fangfang Du and Tao Li and Bao‐Cang Ren and Hai-Rui Wei and Fu-Guo Deng},
  journal={Journal of The Optical Society of America B-optical Physics},
  year={2012},
  volume={29},
  pages={1399-1405}
}
We propose a nonlocal entanglement concentration protocol (ECP) for N-photon systems in a partially entangled W state, resorting to some ancillary single photons and the parity-check measurement based on cross-Kerr nonlinearity. One party in quantum communication first performs a parity-check measurement on her photon in an N-photon system and an ancillary photon, and then she picks up the even-parity instance for obtaining the standard W state. When she obtains an odd-parity instance, the… Expand

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References

SHOWING 1-10 OF 100 REFERENCES
Efficient single-photon-assisted entanglement concentration for partially entangled photon pairs
We present two realistic entanglement concentration protocols (ECPs) for pure partially entangled photons. A partially entangled photon pair can be concentrated to a maximally entangled pair withExpand
Optimal nonlocal multipartite entanglement concentration based on projection measurements
We propose an optimal nonlocal entanglement concentration protocol (ECP) for multiphoton systems in a partially entangled pure state, resorting to the projection measurement on an additional photon.Expand
Linear-optics-based entanglement concentration of unknown partially entangled three-photon W states
We propose two experimental schemes for concentrating entanglement in unknown partially entangled three-photon W states with only linear optical elements and the conventional photon detectors. WeExpand
Efficient polarization-entanglement purification based on parametric down-conversion sources with cross-Kerr nonlinearity
We present a way for entanglement purification based on two parametric down-conversion (PDC) sources with cross-Kerr nonlinearities. It is comprised of two processes. The first one is a primaryExpand
Schemes for entanglement concentration of two unknown partially entangled states with cross-Kerr nonlinearity
We propose practical schemes for concentrating entanglement of a pair of unknown partially entangled Bell states and three-photon W states with cross-Kerr nonlinearity. In these schemes, utilizingExpand
One-step deterministic polarization-entanglement purification using spatial entanglement
We present a one-step deterministic entanglement purification protocol with linear optics and postselection. Compared with the Simon-Pan protocol [C. Simon and J. W. Pan, Phys. Rev. Lett. 89, 257901Expand
One-step error correction for multipartite polarization entanglement
We present two economical one-step error-correction protocols for multipartite polarization-entangled systems in a Greenberger-Horne-Zeilinger state. One uses spatial entanglement to correct errorsExpand
Single-photon entanglement concentration for long-distance quantum communication
TLDR
This protocol is the first concentration protocol for single-photon entangled states and it does not require the two parties of quantum communication to know the accurate information about the coefficient α and β of the less entangled states, which makes this protocol more feasible in current experiments. Expand
Linear optical scheme for entanglement concentration of two partially entangled three-photon ${\sf W}$ states
AbstractWe propose a practical scheme for concentrating entanglement in a pair of unknown partially entangled three-photon W states with only linear optics and photon detectors. In the scheme, Alice,Expand
Symmetric multiparty-controlled teleportation of an arbitrary two-particle entanglement
We present a way for symmetric multiparty-controlled teleportation of an arbitrary two-particle entangled state based on Bell-basis measurements by using two Greenberger-Horne-Zeilinger states, i.e.,Expand
...
1
2
3
4
5
...