Scattering theory of plasmon-assisted entanglement transfer and distillation
arXiv:quant-ph/0211103 · doi:10.1103/PhysRevA.68.043807
Abstract
We analyse the quantum mechanical limits to the plasmon-assisted entanglement transfer observed by E. Altewischer, M.P. van Exter, and J.P. Woerdman [Nature, 418, 304 (2002)]. The maximal violation S of Bell's inequality at the photodetectors behind two linear media (such as the perforated metal films in the experiment) can be described by two ratio's tau_1, tau_2 of polarization-dependent transmission probabilities. A fully entangled incident state is transferred without degradation for tau_1=tau_2, but a relatively large mismatch of tau_1 and tau_2 can be tolerated with a small reduction of S. We predict that fully entangled Bell pairs can be distilled out of partially entangled radiation if tau_1 and tau_2 satisfy a pair of inequalities.
arXiv comment4 pages including 2 figures; two references added, plasmon model included
References in corpus (12)
- Entanglement of Formation of an Arbitrary State of Two Qubits
- Concentrating Partial Entanglement by Local Operations
- Purification of Noisy Entanglement and Faithful Teleportation via Noisy Channels
- Entanglement of a Pair of Quantum Bits
- Theory of extraordinary optical transmission through subwavelength hole arrays
- Transmission resonances on metallic gratings with very narrow slits
- Feasible Entanglement Purification for Quantum Communication
- Plasmon-assisted Quantum Entanglement
- Secure quantum key distribution using squeezed states
- A Concentration/Purification Scheme for Two Partially Entangled Photon Pairs
- Quantum Teleportation and Bell's Inequality Using Single-Particle Entanglement
- Degree of entanglement for two qubits
Cited by in corpus (9)
- Single-photon excitation of surface plasmon polaritons
- Theory of Plasmon-assisted Transmission of Entangled Photons
- Spontaneous emission interference in negative-refractive-index waveguides
- Long-range surface plasmon polariton excitation at the quantum level
- Quantum plasmonics with a metal nanoparticle array
- Quantum theory of surface plasmon polariton scattering
- Intrinsic Entanglement Degradation by Multi-Mode Detection
- Transition from pure-state to mixed-state entanglement by random scattering
- Quantization of surface plasmon polariton by Green's tensor method in amplifying and attenuating media