Entangling single photons on a beamsplitter
arXiv:0801.1595 · doi:10.1140/epjd/e2008-00017-3
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.
Accepted EPJD
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Cited by in corpus (3)
- Measuring the photon coalescence time-window in the continuous-wave regime for resonantly driven semiconductor quantum dots
- Bell inequalities and density matrix for polarization entangled photons out of a two-photon cascade in a single quantum dot
- Artificial coherent states of light by multi-photon interference in a single-photon stream