Manipulation of a two-photon pump in superconductor-semiconductor heterostructures

Paul Baireuther, Peter P. Orth, Ilya Vekhter, Jörg Schmalian

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Abstract

We investigate the photon statistics, entanglement, and squeezing of a p-n junction sandwiched between two superconducting leads and show that such an electrically driven photon pump generates correlated and entangled pairs of photons. In particular, we demonstrate that the squeezing of the fluctuations in the quadrature amplitudes of the emitted light can be manipulated by changing the relative phase of the order parameters of the superconductors. This reveals how macroscopic coherence of the superconducting state can be used to tailor the properties of a two-photon state.

Original languageEnglish (US)
Article number077003
JournalPhysical review letters
Volume112
Issue number7
DOIs
StatePublished - Feb 20 2014

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