Spectral Compression of Narrowband Single Photons with a Resonant Cavity

Abstract

We experimentally demonstrate a spectral compression scheme for heralded single photons with narrow spectral bandwidth around 795 nm, generated through four-wave mixing in a cloud of cold Rb-87 atoms. The scheme is based on an asymmetric cavity as a dispersion medium and a simple binary phase modulator, and can be, in principle, without any optical losses. We observe a compression from 20.6 MHz to less than 8 MHz, almost matching the corresponding atomic transition.

4 figures, 4 pages

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Cited by in corpus (3)

• Almost indistinguishable single photons via multiplexing cascaded biphotons with cavity modulation and phase compensation
• Spectral compression and entanglement reduction in the cascaded biphoton state with cavities
• Nonorthogonal coding in spectrally-entangled photons