Retrieval of single photons from solidstate quantum transducers
Abstract
Quantum networks using photonic channels require control of the interactions between the photons, carrying the information, and the elements comprising the nodes. In this work we theoretically analyse the spectral properties of an optical photon emitted by a solidstate quantum memory, which acts as a converter of a photon absorbed in another frequency range. We determine explicitly the expression connecting the stored and retrieved excitation taking into account possible mode and phase mismatching of the experimental setup. The expression we obtain describes the output field as a function of the input field for a transducer working over a wide range of frequencies, from opticaltooptical to microwavetooptical. We apply this result to analyse the photon spectrum and the retrieval probability as a function of the optical depth for microwavetooptical transduction. In the absence of losses, the efficiency of the solidstate quantum transducer is intrinsically determined by the capability of designing the retrieval process as the timereversal of the storage dynamics.
 Publication:

arXiv eprints
 Pub Date:
 August 2021
 arXiv:
 arXiv:2108.00722
 Bibcode:
 2021arXiv210800722S
 Keywords:

 Quantum Physics;
 Condensed Matter  Other Condensed Matter;
 Physics  Optics
 EPrint:
 13 pages, 4 figures