We demonstrate the generation of photons within a fiber-cavity quantum memory, followed by later on-demand readout. Signal photons are generated by spontaneous four-wave mixing in a fiber cavity comprising a birefringent fiber with dichroic reflective end facets. The detection of the partner herald photon indicates the creation of the stored signal photon. After a delay, the signal photon is switched out of resonance with the fiber cavity by intracavity frequency translation using Bragg scattering four-wave mixing, driven by ancillary control pulses. We measure sub-Poissonian statistics in the output signal mode, with gAC(2)=0.54(1) in the first readout bin and a readout frequency translation efficiency of ≈80%. The 1/e memory lifetime is ≈67 cavity cycles, or 1.68μs. In an alternate fiber cavity, we show a strategy for noise reduction and measure gAC(2)=0.068(10) after one cavity cycle.
@article{arxiv.2401.18077,
title = {Toward deterministic sources: Photon generation in a fiber-cavity quantum memory},
author = {Philip J. Bustard and Ramy Tannous and Kent Bonsma-Fisher and Daniel Poitras and Cyril Hnatovsky and Stephen J. Mihailov and Duncan England and Benjamin J. Sussman},
journal= {arXiv preprint arXiv:2401.18077},
year = {2024}
}