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We present a scheme to efficiently perform boson sampling using frequency modes which yields exponential reduction in losses and significantly reduced experimental complexity compared to conventional spatial-mode implementations.
We generate large effective χ(2) nonlinearities in a purely χ(3)-nonlinear Si3N4 microringresonator using the coherent photon conversion scheme and measure a normalized effective second harmonic generation efficiency above 77%/mW.
We demonstrate a silicon-based narrow-band, correlated photon source that can be tuned continuously over 18 THz and precisely to the hyperfine transitions of the Rb D1 line.
We demonstrate the first observation of Hong-Ou-Mandel interference between two energy correlated single photons of different frequencies with a visibility of 0.68, using Bragg-scattering four wave mixing as the active frequency-domain beamsplitter.
We demonstrate frequency comb generation in the visible optical spectrum via excitation of higher-order modes in silicon nitride microresonators. Anomalous group-velocity dispersion from the higher-order mode allows for broadband comb generation spanning 45 THz.
We demonstrate frequency-degenerate optical parametric oscillation via four-wave mixing using dual pumps in a silicon-nitride microresonator. The system offers potential for realization of coherent optical computing and all-optical quantum random number generation.
We propose a new scheme based on frequency multiplexing to deterministically generate single photons. We experimentally demonstrate the feasibility of multiplexing 2 frequency channels without additional multi-photon noise and losses in the generated photons.
We use temporal magnification via four-wave-mixing Bragg Scattering to resolve a 2.2 ps separation between two pulses each with a mean number of 0.05 photons. Our approach offers the potential for sub-200-fs resolution photon counting.
We show the first demonstration of frequency conversion via four wave mixing in a silicon carbide channel waveguide with a conversion efficiency as high as −19.5 dB over a 180 nm wavelength range.
We demonstrate a spectrally efficient parametric comb source for WDM applications using a Si3N4 dual-coupled microring resonator. This geometry allows for operating wavelength flexibility and avoidance of mode crossings for stable comb generation.
We demonstrate a Ramsey interferometer for single photons via consecutive quantum frequency conversions where the phase depends on the propagation between the two interaction regions. Such an interferometer offers control over frequency encoded quantum states.
Using high-Q Si3N4 microresonators, we generate the narrowest bandwidth (40 MHz) photon pairs, yet achieved for a chip-based source. Its high intrinsic stability and broad tunability are highly promising for interfacing to quantum memory networks.
We demonstrate quantum frequency translation of single photons via four-wave-mixing Bragg scattering using a liquid nitrogen cooled dispersion-shifted fiber. We achieve 80% photon conversion efficiency with less than 0.001 noise photons per 5ns gate.
We demonstrate a photonic Ramsey interferometer using four-wave mixing in which the photon energies are analogous to atomic/molecular levels. This technique is highly promising for frequency-based quantum key distribution.
We report the first demonstration of all-optical continuously tunable delay imparted on single photons using a frequency conversion-dispersion technique. Delays tunable over 23 times the photon duration are demonstrated with on/off efficiency of 20–55%.
Accelerating wavepackets in the time domain are demonstrated using four-wave-mixing (FWM). By incorporating two FWM interactions, acceleration of the wavepacket beyond the limit set by the temporal aperture of the pump pulse is achieved.
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