Results 41 to 50 of about 6,279,893 (294)

Energy Relaxtation and Hot Spot Formation in Superconducting Single Photon Detectors SSPDS

EPJ Web of Conferences, 2015
We have studied the mechanism of energy relaxation and resistive state formation after absorption of a single photon for different wavelengths and materials of single photon detectors. Our results are in good agreement with the hot spot model.
Florya I.N., Korneeva Yu. P., Sidorova M.V., Golikov A.D., Gaiduchenko I.A., Fedorov G.E., Korneev A.A., Voronov B.M., Goltsman G.N.   +8 more
doaj   +1 more source

Dispersion monitoring for high-speed WDM networks via two-photon absorption in a semiconductor microcavity [PDF]

, 2006
Due to the continued demand for bandwidth, network operators have to increase the data rates at which individual wavelengths operate at. As these data rates will exceed 100 Gbit/s in the next 5-10 years, it will be crucial to be able to monitor and ...
Guo, Wei Hua, J. F. Donegan, W. H. Guo, Bradley, L., Folliot, Hervé, Marciniak, Marian, Maguire, P.J., P. J. Maguire, Guo, W.H., A. L. Bradley, Folliot, H., Lynch, M., Barry, Liam P., Bondarczuk, Krzysztof, Lynch, Michael, H. Folliot, Bradley, Ann Louise, O'Dowd, John, Donegan, John Francis, Donegan, J.F., K. Bondarczuk, J. O'Dowd, Bondarczuk, K., L. P. Barry, Maguire, Paul J., M. Lynch, Barry, Liam, P.   +26 more
core   +1 more source

Photon entanglement detection by a single atom

New Journal of Physics, 2013
We use a single trapped ^40 Ca ^+ ion as a resonant, polarization-sensitive absorber to detect and characterize the entanglement of tunable narrowband photon pairs from a spontaneous parametric down-conversion source.
J Huwer, J Ghosh, N Piro, M Schug, F Dubin, J Eschner   +5 more
doaj   +1 more source

A quantum trajectory picture of single photon absorption and energy transport in photosystem II

The Journal of Chemical Physics, 2023
We use quantum trajectory theory to study the dynamics of the first step in photosynthesis for a single photon interacting with photosystem II (PSII). By considering individual trajectories we are able to look beyond the ensemble average dynamics to compute the PSII system evolution conditioned upon individual photon counting measurements. Measurements
Robert L. Cook, Liwen Ko, K. Birgitta Whaley   +2 more
openaire   +3 more sources

Single photon source characterization with a superconducting single photon detector [PDF]

, 2005
Superconducting single photon detectors (SSPD) based on nanopatterned niobium nitride wires offer single photon counting at fast rates, low jitter, and low dark counts, from visible wavelengths well into the infrared.
Mirin, R.P., Nam, S.W., Gruber, S.S., Miller, A.J., Stevens, M.J., Hadfield, R., Schwall, R.E.   +6 more
core   +1 more source

Photon transport through a nanohole by a moving atom

New Journal of Physics, 2016
We have proposed and investigated for the first time an efficient way of photon transport through a subwavelength hole by a moving atom. The transfer mechanism is based on the reduction of the wave packet of a single photon due to its absorption by an ...
A E Afanasiev, P N Melentiev, A A Kuzin, A Yu Kalatskiy, V I Balykin   +4 more
doaj   +1 more source

Quantum detector tomography of a time-multiplexed superconducting nanowire single-photon detector at telecom wavelengths [PDF]

, 2013
Superconducting nanowire single-photon detectors (SNSPDs) are widely used in telecom wavelength optical quantum information science applications. Quantum detector tomography allows the positive-operator-valued measure (POVM) of a single-photon detector ...
Natarajan, C.M., Walmsley, I.A. (author), Hadfield, R.H. (author), Zhang, L. (author), Zwiller, Val, Coldenstrodt-Ronge, H. (author), Natarajan, C.M. (author), Natarajan, Chandra M, Zwiller, V., Dorenbos, S.N. (author), Zhang, Lijian, Zhang, L., Dorenbos, S.N., Hadfield, R., Zwiller, V. (author), Donati, G. (author), Donati, Gaia, Walmsley, Ian A., Coldenstrodt-Ronge, Hendrik, Walmsley, I.A., Hadfield, Robert H, Dorenbos, Sander N., Donati, G., Coldenstrodt-Ronge, H.   +23 more
core   +1 more source

Single Photon Absorption by a Single Atom: From Heralded Absorption to Polarization State Mapping [PDF]

, 2015
to appear as a book chapter in a compilation "Engineering the Atom-Photon Interaction" published by Springer in 2015, edited by A. Predojevic and M.
Piro, Nicolas, Eschner, Jürgen
openaire   +2 more sources

Expanding the range of chromatic dispersion monitoring with two-photon absorption in semiconductors [PDF]

, 2007
Chromatic dispersion monitoring based on two-photon absorption (TPA) in semiconductors is very attractive because it does not need any high speed electronic devices (Inui, 2002).
Guo, Wei Hua, Barry, Liam P., W. H. Guo, Donegan, John Francis, J. F Donegan, L. P. Barry   +5 more
core   +1 more source

Improvement of infrared single-photon detectors absorptance by integrated plasmonic structures [PDF]

Scientific Reports, 2013
Plasmonic structures open novel avenues in photodetector development. Optimized illumination configurations are reported to improve p-polarized light absorptance in superconducting-nanowire single-photon detectors (SNSPDs) comprising short- and long-periodic niobium-nitride (NbN) stripe-patterns.
Najafi, Faraz, Berggren, Karl K., Csete, Maria, Sipos, Aron, Szalai, Aniko, Szabo, Gabor   +5 more
openaire   +4 more sources