Quantum entanglement of a large number of photons
arXiv:quant-ph/0408030 · doi:10.1103/PhysRevLett.93.193901
Abstract
A bipartite multiphoton entangled state is created through stimulated parametric down-conversion of strong laser pulses in a nonlinear crystal. It is shown how detectors that do not resolve photon number can be used to analyze such multiphoton states. Entanglement of up to 12 photons is detected using both the positivity of the partially transposed density matrix and a newly derived criteria. Furthermore, evidence is provided for entanglement of up to 100 photons. The multi-particle quantum state is such that even in the case of an overall photon collection and detection efficiency as low as a few percent, entanglement remains and can be detected.
arXiv comment4 pages, 5 figures, published version
References in corpus (15)
- Separability Criterion for Density Matrices
- On the Measurement of Qubits
- Quantum Interferometric Optical Lithography: Exploiting Entanglement to Beat The Diffraction Limit
- Super-resolving phase measurements with a multi-photon entangled state
- Experimental Demonstration of Five-photon Entanglement and Open-destination Teleportation
- Fiber-assisted detection with photon number resolution
- Stimulated emission of polarization-entangled photons
- Experimental violation of a spin-1 Bell inequality using maximally-entangled four-photon states
- Experimental observation of four-photon entanglement from down-conversion
- Postselected versus nonpostselected quantum teleportation using parametric down-conversion
- Entanglement of a Mesoscopic Field with an Atom induced by Photon Graininess in a Cavity
- Direct observation of non-classical photon statistics in parametric downconversion
- Theory of an Entanglement Laser
- Multi-Photon Entanglement Concentration and Quantum Cryptography
- Experimental observation of nonclassical effects on single-photon detection rates
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