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Nonlocal entanglement concentration scheme for partially entangled multipartite systems with nonlinear optics
Nonlocal entanglement concentration scheme for partially entangled multipartite systems with nonlinear optics
- Publication Year :
- 2008
- Publisher :
- arXiv, 2008.
-
Abstract
- We present a nonlocal entanglement concentration scheme for reconstructing some maximally entangled multipartite states from partially entangled ones by exploiting cross-Kerr nonlinearities to distinguish the parity of two polarization photons. Compared with the entanglement concentration schemes based on two-particle collective unitary evolution, this scheme does not require the parties to know accurately information about the partially entangled states--i.e., their coefficients. Moreover, it does not require the parties to possess sophisticated single-photon detectors, which makes this protocol feasible with present techniques. By iteration of entanglement concentration processes, this scheme has a higher efficiency and yield than those with linear optical elements. All these advantages make this scheme more efficient and more convenient than others in practical applications.<br />Comment: 7 pages, 4 figures. Physical Review A 77, 062325 (2008)
- Subjects :
- Physics
Quantum Physics
TheoryofComputation_GENERAL
FOS: Physical sciences
Quantum entanglement
Squashed entanglement
Topology
Multipartite entanglement
Atomic and Molecular Physics, and Optics
Multipartite
Quantum mechanics
Coincidence counting
W state
Quantum information science
Quantum Physics (quant-ph)
Entanglement witness
Subjects
Details
- Database :
- OpenAIRE
- Accession number :
- edsair.doi.dedup.....cdcdfb7e65307a7a72ba9e7b630c3d5a
- Full Text :
- https://doi.org/10.48550/arxiv.0806.0115