Interfacing broadband photonic qubits to on-chip cavity-protected rare-earth ensembles.

ABSTRACT: Ensembles of solid-state optical emitters enable broadband quantum storage and transduction of photonic qubits, with applications in high-rate quantum networks for secure communications and interconnecting future quantum computers. To transfer quantum states using ensembles, rephasing techniques are used to mitigate fast decoherence resulting from inhomogeneous broadening, but these techniques generally limit the bandwidth, efficiency and active times of the quantum interface. Here, we use a dense ensemble of neodymium rare-earth ions strongly coupled to a nanophotonic resonator to demonstrate a significant cavity protection effect at the single-photon level-a technique to suppress ensemble decoherence due to inhomogeneous broadening. The protected Rabi oscillations between the cavity fiel

SUBMITTER: Zhong T 

PROVIDER: S-EPMC5241816 | biostudies-literature | 2017 Jan

REPOSITORIES: biostudies-literature