Results 21 to 30 of about 43,116 (278)

Broadband infrared light source by simultaneous parametric down-conversion

Scientific Reports, 2021
Spontaneous parametric down-conversion is an essential tool for a quantum light source in the infrared region ranging 2–5 µm for the purpose of material identification, chemical analysis, and gas sensing.
Masayuki Hojo, Koichiro Tanaka
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

Joint probability distributions for optical parametric down-conversion [PDF]

Journal of the European Optical Society-Rapid Publications, 2006
We derive multi mode joint generating functions, photon-number distributions, integrated-intensity distributions and related quantities for spontaneous and stimulated parametric down-conversion in relation to experiments.
Peřina Jan, Křepelka Jaromír
doaj   +1 more source

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

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

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

Advances in nonlinear metasurfaces for imaging, quantum, and sensing applications

Nanophotonics, 2023
Metasurfaces, composed of artificial meta-atoms of subwavelength size, can support strong light–matter interaction based on multipolar resonances and plasmonics, hence offering the great capability of empowering nonlinear generation.
Zheng Ze, Rocco Davide, Ren Hang, Sergaeva Olga, Zhang Yipei, Whaley K. Birgitta, Ying Cuifeng, de Ceglia Domenico, De-Angelis Constantino, Rahmani Mohsen, Xu Lei   +10 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

Spontaneous parametric down conversion in a nanophotonic waveguide

Optics Express, 2007
Recently, we verified that spontaneous parametric down conversion (SPDC) is enhanced in a waveguide, in agreement with theory showing an inverse dependence on mode confinement [1]. Here we investigate highly-confined nanophotonic waveguides designed to maximize the SPDC rate.
Sean M, Spillane, Marco, Fiorentino, Raymond G, Beausoleil   +2 more
openaire   +2 more sources

Measurement of two-photon position–momentum Einstein–Podolsky–Rosen correlations through single-photon intensity measurements

New Journal of Physics, 2022
The measurement of the position–momentum Einstein–Podolsky–Rosen (EPR) correlations of a two-photon state is important for many quantum information applications ranging from quantum key distribution to coincidence imaging.
Abhinandan Bhattacharjee, Nilakantha Meher, Anand K Jha   +2 more
doaj   +1 more source