Entangling single photons on a beamsplitter |
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Authors: | M Larqué A Beveratos I Robert-Philip |
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Institution: | (1) CNRS - Laboratoire de Photonique et Nanostructures, Route de Nozay, 91460 Marcoussis, France |
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Abstract: | We report on a scheme for the creation of time-bin entangled states out of two subsequent single photons. Both photons arrive
on the same input port of a beamsplitter and the situation in which the photons leave the beamsplitter on different output
ports is post-selected. We derive a full quantum mechanical analysis of such time-bin entanglement for emitters subject to
uncorrelated dephasing processes and apply this model to sequential single photons emerging from a single semiconductor quantum
dot. Our results indicate that the visibility of entanglement is degraded by decoherence effects in the quantum dot, but can
be restored by use of CQED effects, namely the Purcell effect. |
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Keywords: | 42 50 Dv Quantum state engineering and measurements 78 67 Hc Quantum dots 85 35 Ds Quantum interference devices |
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