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We demonstrate a novel comb tuning method for microresonator-based Kerr comb generators. Continuously tunable, low-noise, and coherent comb generation is achieved in a CMOS-compatible silicon nitride microring resonator.
We report an interferometer consisting of two spatially separated balanced Mach-Zehnder interferometers sharing a polarization entangled source. Nonlocal correlation statistics enable entanglement detection, Bell state identification, and fidelity bounding.
We present a single-photon to single-atom interface, where a heralded single photon generated by Spontaneous Parametric Conversion is absorbed by a single trapped ion, subsequently generating a single Raman-scattered photon that heralds the absorption event.
We measured directly long-range spatial intensity correlations inside quasi-two-dimensional disordered photonic waveguides. Enhancement of long-range correlations is observed in narrower waveguides due to stronger localization effects, which enables manipulation of intensity correlations inside random media.
We demonstrate a 43 Gbps quantum random number generator using DPSK demodulation of pulses from a current-modulated laser diode. The signal is random by quantum phase diffusion, macroscopic, and detectable with off-the-shelf components.
In this presentation we show that the autocorrelation function of the cathodoluminescence signal (CL−g(2)(τ)) can be different from the photoluminescence PL−g(2)(τ) showing a huge nanosecond bunching effect g(2)(0) » 1, allowing to retrieve emitters lifetime at nanometer scale.
We have developed a cathodoluminescence-based single photon emitter detection scheme with deep subwavelength resolution. Application to NV0 centers in diamond and a new type of emitter in hexagonal Boron Nitride is presented.
We demonstrate a graphene mode-locked fiber laser system generating 42 fs pulses with 53mW output power, ideal for high temporal resolution applications.
By incorporating two-dimensional photonic crystals into the surface of InGaN-based LEDs, the strong correlation between the air duty cycle and the light extraction efficiency of LEDs was demonstrated by optical and electrical measurement results.
We exhibit high-dimensional frequency-bin entanglement from a mode-locked two-photon source via frequency-correlation measurement and Hong-Ou-Mandel interference. Generalized Bell-inequality is tested by Franson interference, showing revival interference fringes, with maximum visibility of 98.6%.
We present evidence from transient-absorption spectra for quantum electron-hole droplets in GaAs quantum wells. Quantum droplets have a two-particle correlation function characteristic of a liquid, but, unlikemacroscopic droplets, have quantized binding energy.
We demonstrate the measurement of photon-pair joint spectral correlations in optical fiber through stimulated four-wave mixing. This method enables us to study correlations more easily, precisely and quickly than with traditional coincidence counting measurements.
Lasers of diffraction-limited volumes involve the interaction of small numbers of particles (photons and dipoles). We demonstrate that these small populations of discrete particles induce large intensity noise in the output of the laser.
We demonstrate coherent combining of pulses within a laser cavity and discuss applications to energy scaling and pulse-burst operation. 16-times enhancement of the pulse energy from a fiber laser is demonstrated.
Spatial variations in the thermal motion of a nanoparticle are mapped with quantum enhanced precision over an extended region of a cell. This enables both subdiffraction-limited quantum metrology and quantum enhanced spatial resolution in biology.
We implement a high-dimensional quantum key distribution protocol secure against collective attacks. We transform between conjugate measurement bases using group velocity dispersion. We obtain > 3 secure bits per photon coincidence.
We introduce a simple and efficient technique to verify quantum discord in unknown Gaussian states and certain class of non-Gaussian states. We show that any separation in the peaks of the marginal distributions of one subsystem conditioned on two different outcomes of homodyne measurements performed on the other subsystem indicates correlation between the corresponding quadratures and hence nonzero...
We observe a transition to a coherent-comb state in a SiN-microresonator with anomalous dispersion. Although ∼300 fs pulse trains are generated after line-by-line shaping, the intensity within the microring does not appear to be pulse-like.
We experimentally investigate the spectral correlation between multiple modulation instability side lobes in dispersion oscillating fiber by leveraging the dispersive Fourier transformation. We found that parametric processes related to each side lobe pairs act quasi-independently.
We demonstrate orthogonal spectral coding of entangled photons for the first time. Applying one code to the signal photon spreads and scrambles the biphoton; only by properly decoding the idler is the original biphoton recovered.
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