Results 231 to 240 of about 74,798 (256)

Double-heralded single-photon absorption by a single atom

CLEO: 2014, 2014
We present a single-photon to single-atom interface, where a heralded single photon generated by Spontaneous Parametric Conversion is absorbed by a single trapped ion, subsequently generating a single Raman-scattered photon that heralds the absorption event.
José Brito, Stephan Kucera, Pascal Eich, Michael Schug, Christoph Kurz, Philipp Müller, Jan Huwer, Jürgen Eschner   +7 more
openaire   +1 more source

Single photon absorption laser facility for single event effect testing

2016 IEEE Canadian Conference on Electrical and Computer Engineering (CCECE), 2016
The laser testing facility for single event effects (SEEs) at the Saskatchewan Structural Sciences Centre, University of Saskatchewan is introduced and its principles of operation described. An ultrafast pulsed laser setup is used to investigate the SEE behavior of microelectronic circuits and devices.
Michael Newton, Brook Danger, Li Chen 0001, Ramaswami Sammynaiken, Haibin Wang, David M. Hiemstra, Valeri Kirischian   +6 more
openaire   +1 more source

Infrared single-photon detection by two-photon absorption in silicon

Physical Review B, 2008
We propose a scheme for infrared single-photon detection based on two-photon absorption at room temperature in Si avalanche photodiodes, where the detected photon's energy is lower than the band gap and the energy difference is complemented by a pump field.
Hayat, Alex, Ginzburg, Pavel, Orenstein, Meir   +2 more
openaire   +2 more sources

Characterization of optical absorptance in superconducting nanowire single-photon detectors

2013 IEEE 14th International Superconductive Electronics Conference (ISEC), 2013
We present a numerical simulation of the optical absorptance for the superconducting nanowire single-photon detectors (SNSPDs or SSPDs) designed with various layouts by using finite-element analysis software. The simulation results reveal that the electric field concentrated in the superconducting nanowire is enhanced by reducing the filling factor ...
Taro Yamashita, Shigehito Miki, Hirotaka Terai, Zhen Wang   +3 more
openaire   +1 more source

Single-photon sources using two-photon absorption

SPIE Proceedings, 2007
Although two-photon absorption (TPA) is a nonlinear optical process, it is not typically considered a fundamental resource for optical quantum information processing (QIP). We have recently shown that TPA and the quantum Zeno effect can be used to make deterministic quantum logic devices (Zeno gates) from an otherwise linear optical system.
openaire   +1 more source

Metamaterial coherent plasmonic absorption with a single photon [PDF]

, 2015
With a plasmonic metamaterial absorber of sub-wavelength thickness we demonstrated that coherent absorption can be observed even with a single photon that could be coupled with nearly 100% probability into a localized plasmon.
Vezzoli, S., Altuzarra, C.M.X., Roger, T., Bolduc, E., Valente, J., Heitz, J.J.F., Jeffers, J., Leach, J., Couteau, C., Soci, C., Zheludev, N.I., Faccio, D.   +11 more
openaire   +1 more source

Single-photon absorption of liquid methanol and ethanol in the vacuum ultraviolet

Chemical Physics Letters, 2002
Abstract The single-photon absorption spectra of pure liquid methanol and ethanol have been measured for the first time, between 6 and 10.8 eV, with the help of a new technique specially developed for the detection of vacuum ultraviolet synchrotron beams normally transmitted through thin (1±0.5 μm ) liquid films.
Jung, J.M., Gress, H.
openaire   +2 more sources

The Response of the Limulus Photoreceptor Cell to the Absorption of Single Photons

Berichte der Bunsengesellschaft für physikalische Chemie, 1988
AbstractThe response of the visual cell of the horseshoe crab Limulus to light stimuli is described. Due to the absorption of a single photon, a rhodopsin molecule is light‐activated and starts a sequence of causal steps which lead to the generation of a relatively large elementary excitatory response, the “bump”.
openaire   +1 more source

On the evolution of N-atom state prepared by absorption of a single photon

Optics Communications, 2010
We study evolution of timed symmetric N-atom state prepared by conditional absorption of a single photon and exhibiting superradiant decay. We find analytical expression for the initial decay rate of the state valid for any size of spherical atomic cloud.
Anatoly A. Svidzinsky, Marlan O. Scully
openaire   +1 more source

The Response of the Limulus Photoreceptor to the Absorption of Single Photons

1988
The ventral photoreceptor of the horseshoe crab Limulus (Fig. 1) responds to very dim flashes of light with so-called “bumps”, elementary excitatory events.
openaire   +1 more source