Linear optical implementation of a single mode quantum filter and generation of multi-photon polarization entangled state

Details Linear optical implementation of a single mode quantum filter and generation of multi-photon polarization entangled state Linear optical implementation of a single mode quantum filter and generation of multi-photon polarization entangled state

2002-10-12

arxiv.org/abs/quant-ph/0210096v1

Physics

Quantum Physics

revision submitted to PRA

Scientific paper

10.1103/PhysRevA.66.064302

We propose a scheme to implement a single-mode quantum filter, which selectively eliminates the one-photon state in a quantum state $\alpha|0>+\beta|1>+\gamma|2>$. The vacuum state and the two photon state are transmitted without any change. This scheme requires single-photon sources, linear optical elements and photon detectors. Furthermore we demonstrate, how this filter can be used to realize a two-qubit projective measurement and to generate multi-photon polarization entangled states.

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