Results 21 to 30 of about 169,436 (283)

Towards Measuring Terahertz Photon Statistics by a Superconducting Bolometer

Sensors, 2021
Statistical distributions of the analog readings of an antenna-coupled THz superconducting bolometer were measured and analyzed under a special type of irradiation by low-energy fluxes of THz photons with Poisson photon statistics and controllable mean ...
Pavel Prudkovskii, Andrey Leontyev, Kirill Kuznetsov, Galiya Kitaeva   +3 more
doaj   +1 more source

Multi-parameter Entanglement in Quantum Interferometry [PDF]

, 2001
The role of multi-parameter entanglement in quantum interference from collinear type-II spontaneous parametric down-conversion is explored using a variety of aperture shapes and sizes, in regimes of both ultrafast and continuous-wave pumping.
A. Joobeur, Alexander V. Sergienko, B.E.A. Saleh, B.E.A. Saleh, B.R. Mollow, Bahaa E. A. Saleh, C.H. Monken, C.K. Hong, D. Magde, D.N. Klyshko, E. Schrödinger, E. Schrödinger, E. Schrödinger, G. Di Giuseppe, G. Di Giuseppe, Giovanni Di Giuseppe, J. Peřina, Jr., J.D. Trimmer, J.G. Rarity, M. Atatüre, M. Atatüre, M.H. Rubin, Malvin C. Teich, Matthew D. Shaw, Mete Atatüre, P.G. Kwiat, P.G. Kwiat, P.G. Kwiat, S. Tanzilli, S.E. Harris, T.B. Pittman, T.E. Keller, W.P. Grice, Y.H. Kim, Y.H. Shih, Y.H. Shih, Z.Y. Ou   +36 more
core   +2 more sources

High-sensitivity quantum sensing with pump-enhanced spontaneous parametric down-conversion

APL Photonics, 2023
Recent years have seen the development of quantum sensing concepts utilizing nonlinear interferometers based on correlated photon pairs generated by spontaneous parametric down-conversion (SPDC).
Chiara Lindner, Jachin Kunz, Simon J. Herr, Jens Kießling, Sebastian Wolf, Frank Kühnemann   +5 more
doaj   +1 more source

Observation of Three-Photon Spontaneous Parametric Down-Conversion in a Superconducting Parametric Cavity

Physical Review X, 2020
Spontaneous parametric down-conversion (SPDC) has been a key enabling technology in exploring quantum phenomena and their applications for decades. For instance, traditional SPDC, which splits a high-energy pump photon into two lower-energy photons, is a
C. W. Sandbo Chang, Carlos Sabín, P. Forn-Díaz, Fernando Quijandría, A. M. Vadiraj, I. Nsanzineza, G. Johansson, C. M. Wilson   +7 more
doaj   +1 more source

Efficient generation of few-cycle pulses beyond 10 μm from an optical parametric amplifier pumped by a 1-µm laser system

Scientific Reports, 2022
Nonlinear vibrational spectroscopy profits from broadband sources emitting in the molecular fingerprint region. Yet, broadband lasers operating at wavelengths above 7 μm have been lacking, while traditional cascaded parametric frequency down-conversion ...
Zsuzsanna Heiner, Valentin Petrov, Vladimir L. Panyutin, Valeriy V. Badikov, Kiyoshi Kato, Kentaro Miyata, Mark Mero   +6 more
doaj   +1 more source

Excess-noise-enhanced parametric down conversion [PDF]

Physical Review A, 2001
We calculate the influence of excess noise on parametric down conversion in an unstable optical parametric oscillator (OPO), using a quantum quasimode description. We find a strongly enhanced pair photon generation rate below threshold as compared to a conventional stable cavity setup of comparable gain and loss.
Lamprecht, Claus, Olsen, Murray K., Collett, Matthew, Ritsch, Helmut   +3 more
openaire   +2 more sources

Cryogenic integrated spontaneous parametric down-conversion

Optica, 2022
Scalable quantum photonics relies on interfacing many optical components under mutually compatible operating conditions. To that end, we demonstrate that spontaneous parametric down-conversion (SPDC) in nonlinear waveguides, a standard technology for generating entangled photon pairs, squeezed states, and heralded single photons, is fully compatible ...
Nina Amelie Lange, Jan Philipp Höpker, Raimund Ricken, Viktor Quiring, Christof Eigner, Christine Silberhorn, Tim J. Bartley   +6 more
openaire   +2 more sources

Towards spontaneous parametric down-conversion at low temperatures

EPJ Web of Conferences, 2017
The possibility of observing spontaneous parametric down-conversion in doped nonlinear crystals at low temperatures, which would be useful for combining heralded single-photon sources and quantum memories, is studied theoretically.
Akatiev Dmitrii, Boldyrev Kirill, Kuzmin Nikolai, Latypov Ilnur, Popova Marina, Shkalikov Andrey, Kalachev Alexey   +6 more
doaj   +1 more source

Generation of Entangled Photons by A Short Coherence Length Violet Diode Laser

Diyala Journal of Engineering Sciences, 2013
Pumping a BBO crystal by a violet diode laser with a wavelength of (405  nm) output power of (24 mW) and a line width of (3nm) was employed to generate entangled  photons with a wavelength of 810 nm by achieving type II phase matching conditions.
Ra'ad Subhi Abbood, Ahmed I. Khaleel, Shelan Kh. Tawfeeq   +2 more
doaj   +1 more source

Heralded single-photon states generated via spontaneous parametric down-conversion with an orbital angular momentum controlled by the pump field [PDF]

EPJ Web of Conferences, 2019
Conditional preparation of single-photon states in the process of spontaneous parametric down-conversion with an orbital angular momentum controlled by the pump field is studied.
Turaykhanov D.A., Akat’ev D.O., Shkalikov A.V., Romanov V.S., Kalachev A.A.   +4 more
doaj   +1 more source