Reconfigurable Frequency Coding of Deterministic Single Photons in the Telecom C-Band
In this work, we develop reconfigurable frequency manipulation of quantum states of light in the telecom C-band. Deterministic single photons are encoded in a superposition state of three tunable channels using sidebands spanning 53GHz created by an off-the-shelf phase modulator. The single photons are emitted by an InAs/GaAs quantum dot grown by metal-organic vapor-phase epitaxy within the transparency window of the backbone fiber optical network. This combination of established telecommunication equipment and a novel quantum light source paves the way for future quantum-internet applications.