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- W2883453143 abstract "It was theoretically proposed that a forward-biased p-n junction with a superconducting layer (P-N-S), would produce pure, polarization entangled photons due to inherent spin-singlet pairing of electrons. However, any heterostructure interface generically induces Rashba spin-orbit coupling, which in turn generates a mixed singlet-triplet superconducting order parameter. Here we study the effect of triplet pairing on the purity of photons produced through Cooper pair recombination. A unique directional dependence of the state purity is found for a triplet superconductor with fixed $vec{d}$: pure, entangled photons are produced when the photon polarization axis is parallel to $vec{d}$. Induced triplet pairing in a singlet superconductor is shown to degrade the state purity, while induced singlet pairing in a triplet superconductor is shown to enhance the production of entangled pairs. These considerations may aid the design of functional devices to produce entangled photons." @default.
- W2883453143 created "2018-08-03" @default.
- W2883453143 creator A5065238882 @default.
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- W2883453143 date "2018-09-18" @default.
- W2883453143 modified "2023-09-24" @default.
- W2883453143 title "Anisotropic purity of entangled photons from Cooper pairs in heterostructures" @default.
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- W2883453143 doi "https://doi.org/10.1103/physrevb.98.104509" @default.
- W2883453143 hasPublicationYear "2018" @default.
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