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We consider, experimentally and theoretically, the quantum frequency translation (i.e., noiseless conversion) of quantum states of light (Fig. 1), including single-photon states. This process is useful for allowing quantum optical systems (atoms, ions, cavities, fibers, detectors) operating at different wavelengths to communicate with each other. We recently developed the process of frequency translation...
Wideband optical wavelength translation across a record range from the near-infrared to the visible based on the Bragg scattering four-wave-mixing process has been demonstrated in birefringent photonic crystal fiber. The process was vectorial in nature, where the pumps and the signal and idler fields were polarized on orthogonal axes. Bragg scattering is a theoretically noiseless process (and thus...
Two photons having different colors can undergo the Hong-Ou-Mandel interference effect if the usual beam splitter is replaced by Bragg scattering via four-wave mixing in an optical fiber, which acts as a frequency shifter.
We study the effect of frequency translation of single-photon states in optical fiber through use of the Bragg scattering four-wave mixing process. Preliminary evidence shows that this goal has been achieved.
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