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Nondegenerate four-wave mixing driven by two pulsed pumps transfers the quantum state of an input signal pulse to an output idler pulse, which is a frequency-translated and reshaped version of the signal. By varying the pump shapes appropriately, one can connect signal and idler pulses with arbitrary durations and shapes. This process enables a variety of functions required by quantum information...
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 theoretically investigate and experimentally demonstrate the spontaneous phase anti-correlation between Stokes and anti-Stokes sidebands in Raman frequency comb generation. This anti-correlation suggests a new way to stabilize the comb and synthesize sub-femtosecond pulse trains.
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.
A 3-octave spectral comb is generated in a hydrogen-filled hollow-core photonic-crystal-fiber. The spectrum consists of up to 45 high-order Stokes and anti-Stokes lines generated by coherent stimulated Raman scattering in the transient regime of amplification.
A 3-octave spectral comb is generated in a hydrogen-filled hollow-core photonic-crystal-fiber. The spectrum consists of up to 45 high-order Stokes and anti-Stokes lines generated by coherent stimulated Raman scattering in the transient regime of amplification.
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