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arxiv 1806.01201 v2 pith:ILBSHPZZ submitted 2018-06-04 quant-ph

Swapping Intra-photon entanglement to Inter-photon entanglement using linear optical devices

classification quant-ph
keywords entanglementswappingdevicesinter-photonintra-photonlinearopticalpolarization
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We propose a curious protocol for swapping the intra-photon entanglement between path and polarization degrees of freedom of a single photon to inter-photon entanglement between two spatially separated photons which have never interacted. This is accomplished by using an experimental setup consisting of three suitable Mach-Zehnder interferometers along with number of beam splitters, polarization rotators and detectors. Using the same setup, we have also demonstrated an interesting quantum state transfer protocol, symmetric between Alice and Bob. Importantly, the Bell-basis discrimination is not required in both the swapping and state transfer protocols. Our proposal can be implemented using linear optical devices.

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