Unambiguous modification of nonorthogonal single and two photon polarization states

Details Unambiguous modification of nonorthogonal single and two photon polarization states Unambiguous modification of nonorthogonal single and two photon polarization states

2008-08-12

arxiv.org/abs/0808.1730v2

Physics

Quantum Physics

Accepted for publication in Physical Review A

Scientific paper

In this work we propose a probabilistic method which allows an unambiguous modification of two non-orthogonal quantum states. We experimentally implement this protocol by using two-photon polarization states generated in the process of spontaneous parametric down conversion. In the experiment, for codifying initial quantum states, we consider single photon states and heralded detection. We show that the application of this protocol to entangled states, it allows a fine control of the amount of entanglement of the initial state.

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