Information and noise in photon entanglement

Details Information and noise in photon entanglement Information and noise in photon entanglement

2000-10-06

arxiv.org/abs/quant-ph/0010022v1

Physics

Quantum Physics

6 pages, contribution to the proceedings of the Quantum Information Technology conference QIT4 held November 29th to 30th 2000

Scientific paper

By using finite resolution measurements it is possible to simultaneously obtain noisy information on two non-commuting polarization components of a single photon. This method can be applied to a pair of entangled photons with polarization statistics that violate Bell's inequalities. The theoretically predicted results show that the non-classical nature of entanglement arises from negative joint probabilities for the non-commuting polarization components. These negative probabilities allow a "disentanglement" of the statistics, providing new insights into the non-classical properties of quantum information.

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