Results 41 to 50 of about 43,116 (278)

Entanglement of the Hermite-Gaussian modes states of photons [PDF]

, 2005
We found that the Hermit-Gaussian(HG) modes of the down converted beams from the spontaneous parametric down conversion are quasi-conserved and the generated photon pairs are HG modes entangled for some special cases.
Allen, Arnaut, Bartlett, Bechmann-Pasquinucci, Bechmann-Pasquinucci, Bourennane, Bouwmeester, Guang-Can Guo, Guo, Guo-Ping Guo, Heckenberg, Jian Li, Kwiat, Langford, Mair, Molina-Terriza, Monken, Ren, Torres, Torres, Vaziri, Vaziri, Walborn, Walborn, Walborn, Walborn, Wang, Xi-Feng Ren   +27 more
core   +1 more source

Interaction‐Free Quantum Spectroscopy

Advanced Photonics Research, 2021
Interaction‐free measurement (IFM)‐based single‐photon interference is developed as a powerful platform for revealing object information in quantum metrology, where the presence of a sample is identified without photon “touching” in an interferometer ...
Yu Chen, Yu-Jie Cai, Xing-Tong Li, Kun Huang, Jin-Ming Liu, E Wu   +5 more
doaj   +1 more source

Quantum interference with beamlike type-II spontaneous parametric down-conversion [PDF]

, 2003
We implement experimentally a method to generate photon-number$-$path and polarization entangled photon pairs using ``beamlike'' type-II spontaneous parametric down-conversion (SPDC), in which the signal-idler photon pairs are emitted as two separate ...
A.V. Burlakov, A.V. Burlakov, A.V. Burlakov, A.V. Burlakov, A.V. Burlakov, C. Kurtsiefer, C. Kurtsiefer, C.H. Monken, C.K. Hong, G. Bitton, G. Di Giuseppe, M.H. Rubin, P.G. Kwiat, P.G. Kwiat, S. Takeuchi, T.B. Pittman, T.E. Keller, W.P. Grice, W.P. Grice, Y.-H. Kim, Y.-H. Kim, Y.-H. Kim, Y.-H. Kim, Y.-H. Kim, Y.-H. Kim, Y.H. Shih, Y.H. Shih, Yoon-Ho Kim, Z.Y. Ou   +28 more
core   +1 more source

Absolute calibration of Analog Detectors using Stimulated Parametric Down Conversion

, 2008
Spontaneous parametric down conversion has been largely exploited as a tool for absolute calibration of photon counting detectors, photomultiplier tubes or avalanche photodiodes working in Geiger regime.
G. Brida, I. Ruo-Berchera, M. Chekhova, M. Genovese, M.-L. Rastello, Malygin AA, Sergienko AV, Sze SM, Zel'dovich BY   +8 more
core   +1 more source

Telecom quantum photonic interface for a 40Ca+ single-ion quantum memory

npj Quantum Information, 2023
Entanglement-based quantum networks require quantum photonic interfaces between stationary quantum memories and photons, enabling entanglement distribution.
Elena Arenskötter, Tobias Bauer, Stephan Kucera, Matthias Bock, Jürgen Eschner, Christoph Becher   +5 more
doaj   +1 more source

Scalable scheme for entangling multiple ququarts using linear optical elements

, 2007
We report a scalable linear optical scheme for generating entangled states of multiple ququarts in which the individual single-ququart state is prepared with the biphoton polarization state of frequency-nondegenerate spontaneous parametric down ...
Akopian, Baek, Bechmann-Pasquinucci, Björk, Bogdanov, Bogdanov, Brenden, Chekhova, Collins, de Riedmatten, Fu, Furusawa, Hong, James, Karassiov, Kaslikowski, Kim, Kim, Klyshko, Kok, Lee, Lounisand, Mair, Moreva, Neves, O'Sullivan-Hale, Ou, Ralph, Shih, Shih, So-Young Baek, Thew, Vaziri, Yoon-Ho Kim   +33 more
core   +1 more source

Optimal Co-linear Gaussian Beams for Spontaneous Parametric Down-Conversion [PDF]

, 2010
I investigate the properties of spontaneous parametric down-conversion (SPDC) involving co-linear Gaussian spatial modes for the pump and the photon collection optics.
Bennink, Ryan S.
core   +1 more source

On the geometry of spatial biphoton correlation in spontaneous parametric down conversion [PDF]

Mathematical Methods in the Applied Sciences, 2014
Analytical expressions are derived for the distribution rates of spatial coincidences in the counting of photons produced by spontaneous parametric down conversion. Gaussian profiles are assumed for the wave function of the idler and signal light created in type‐I spontaneous parametric down conversion.
Procopio, L. M., Rosas-Ortiz, O., Velázquez, V.   +2 more
openaire   +3 more sources

Location‐Specific Hematoma Volume Predicts Early Neurological Deterioration in Supratentorial ICH

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Early neurological deterioration (END) adversely affects outcomes in patients with intracerebral hemorrhage (ICH). This study aimed to determine the location‐specific hematoma volumes for END in supratentorial ICH patients. Methods We retrospectively analyzed supratentorial ICH patients presenting from two prospective cohorts.
Zuoqiao Li, Guilin Meng, Zijie Wang, Xiao Hu, Jing Cheng, Chu Chen, Tiannan Yang, Jiaxin Luo, Zizhen Meng, Xueyun Liu, Qi Li   +10 more
wiley   +1 more source

Polarization Sensitive Imaging with Qubits

Applied Sciences, 2022
We compare reconstructed quantum state images of a birefringent sample using direct quantum state tomography and inverse numerical optimization technique.
Vitaly Sukharenko, Roger Dorsinville
doaj   +1 more source