Efficient multipartite entanglement purification with the entanglement link from a subspace
arXiv:1110.0059 · doi:10.1103/PhysRevA.84.052312
Abstract
We present an efficient multipartite entanglement purification protocol (MEPP) for N-photon systems in a Greenberger-Horne-Zeilinger state with parity-check detectors. It contains two parts. One is the conventional MEPP with which the parties can obtain a high-fidelity N-photon ensemble directly, similar to the MEPP with controlled-not gates. The other is our recycling MEPP in which the entanglement link is used to produce some -photon entangled systems from entangled N'-photon subsystems (2 \leq N'<N) coming from the instances which are just discarded in all existing conventional MEPPs. The entangled N'-photon subsystems are obtained efficiently by measuring the photons with potential bit-flip errors. With these two parts, the present MEPP has a higher efficiency than all other conventional MEPPs.
17 pages, 9 figures, 2 tables. We correct the error in the address of the author in the published version (Phys. Rev. A 84, 052312 (2011))
References in corpus (14)
- Device-independent quantum key distribution secure against collective attacks
- Multiparty quantum state sharing of an arbitrary two-particle state with Einstein-Podolsky-Rosen pairs
- Efficient quantum key distribution over a collective noise channel
- Complete hyperentangled-Bell-state analysis for quantum communication
- Efficient polarization entanglement purification based on parametric down-conversion sources with cross-Kerr nonlinearity
- CNOT and Bell-state analysis in the weak-coupling cavity QED regime
- One-step deterministic polarization entanglement purification using spatial entanglement
- Nonlocal entanglement concentration scheme for partially entangled multipartite systems with nonlinear optics
- Long-range interactions and entanglement of slow single-photon pulses
- Deterministic polarization-entanglement purification using spatial entanglement
- One-step error correction for multipartite polarization entanglement
- Continuous-time cross-phase modulation and quantum computation
- Discrimination of binary coherent states using a homodyne detector and a photon number resolving detector
- Multipartite electronic entanglement purification with charge detection
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