The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
We study, both theoretically and experimentally, emission of correlated photon-pairs by spontaneous four-wave-mixing in silicon integrated resonators. We show that the number of generated pairs in the quantum experiment is predicted by a classical experiment.
We experimentally characterize a spontaneous parametric down-conversion source, based on a Beta-Barium-Borate crystal capable of emitting photons with positive or no spectral correlations. Our system employs a carefully designed detection method exploiting two InGaAs detectors.
We experimentally demonstrate a 10 times enhancement to the coincidence-to-accidental ratio of a correlated photon-pair source from a chalcogenide Ge11.5As24Se64.5 nanowire. This improvement is enabled by the low-Raman window of the device.
We experimentally demonstrate nanoscale thermal mapping of light induced heat in photonic and plasmonic devices using a thermocouple AFM tip. Numerical simulations results and nanoscale temperature measurements are presented and discussed.
Knowing the mode structure of light aids in minimizing loss and decoherence of quantum information. We present and experimentally implement reconstruction of the mode distributions of classical and non-classical light using measured photon number distributions.
We present the measurement of χ(3) nonlinearity of Green Fluorescent Protein. The nonlinear index is n2 = 10−19m2/W, opening the possibility of using genetically engineerable and naturally occuring proteins in cells as a source of four wave mixing experiments.
We report on our experimental progress towards observing weak-value amplification of low-light-level cross-phase modulation which will be the first observation of a weak measurement relying on true entanglement between distinct systems.
We report on the formation of hexagonal polariton patterns in double semiconductor microcavities operating in the OPO regime. We experimentally and theoretically demonstrate both the formation and the optical control of these patterns.
We present measurements and modeling of collimating surface states in slow-light photonic crystal superlattices consisting of alternating dispersive and homogeneous media. Superlattice periodicity allows evanescent-wave resonant coupling to surface photon bound states, supporting collimation.
We experimentally demonstrate the impact of disorder on edge states in photonic graphene and find strong evidence that not only chirality but also the vanishing of the density-of-states at zero-energy is preserved under structural disorder.
Quantum photonics is a promising technology for implementing quantum information tasks. We demonstrate integration of multiple photon pair sources together with a circuit enabling creation and manipulation of photon pairs in a monolithic silicon-on-insulator chip.
We theoretically demonstrate that if pump powers are kept low enough to suppress multi-pair events in integrated photon pair generation via spontaneous four-wave mixing, many other nonlinear effects are often also constrained to negligible levels.
The evolution of spatially extended, entangled, anti-correlated two photon states in photonic waveguide arrays that induce classical transverse Anderson localization is theoretically and experimentally investigated.
An XUV continuum supporting 280 as isolated attosecond pulses is generated in argon with a 200 mJ, 17 fs Ti:Sapphire laser using the GDOG technique. The energy of the XUV pulse is over 100 nJ at generation location.
The entanglement level of two initially entangled qubits, subjected to an uncorrelated unital noisy channel is simply manifested by the radii of its Bloch sphere mapping. We demonstrate this relation experimentally using an all-optical setup.
We have built and tested the first experimental demonstration of a photonic quantum digital signature test-bed. We will present a case for quantum digital signatures, overview of the protocol, description of the system and results.
We report the first demonstration of CW-pumped correlated photon-pair generation in an AlGaAs waveguide with a coincidence-to-accidental ratio > 100. This is about two orders of magnitude greater than previously reported in AlGaAs waveguides.
The effect of third-order dispersion in a Hong-Ou-Mandel interferometer is investigated using a ZnSe crystal as a dispersive medium. A value for the TOD coefficient of ZnSe is extracted which is consistent with literature values.
Using photon-number resolving detectors, we directly measure the parity of coherent states in a Mach-Zehnder interferometer. Phases are super resolved by a factor of 150 and shot noise limited measurements are demonstrated with 200 photons.
We compare an analog and a digital method for characterizing the long-distance non-line-of-sight ultraviolet scattering channel. Experimental results and theoretical-model predictions are presented that provide demonstration and validation.
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.