Results 51 to 60 of about 6,279,893 (294)

Ultrahigh speed all-optical demultiplexing based on two-photon absorption in a laser diode [PDF]

, 1998
The authors describe how the nonlinear process of two-photon absorption in a commercial laser diode may be used for all-optical demultiplexing in terabit per second optical time division multiplexing networks. Switching windows of 650 fs in duration have
Thomsen, Benn C., Barry, Liam P., Dudley, John M., Harvey, John D.   +3 more
core   +2 more sources

Single-Photon Scattering Can Account for the Discrepancies among Entangled Two-Photon Measurement Techniques

, 2022
Entangled photon pairs are predicted to linearize and increase the efficiency of two-photon absorption, allowing continuous wave laser diodes to drive ultrafast time-resolved spectroscopy and nonlinear processes.
Scott K. Cushing (1279785), Manni He (12677319), Szilard Szoke (12677322), Bryce P. Hickam (12677316), Nathan Harper (437676)   +4 more
core   +2 more sources

Sequential single-photon and direct two-photon absorption processes for Xe interacting with attosecond XUV pulses [PDF]

, 2020
We investigate the interaction of Xe with isolated attosecond XUV pulses. Specifically, we calculate the ion yields and determine the pathways leading to the formation of ionic charged states up to Xe 5 + .
Hadjipittas, A, Bergues, B, Banks, HIB, Emmanouilidou, A   +3 more
core   +2 more sources

Current-Assisted SPAD with Improved p-n Junction and Enhanced NIR Performance

Sensors, 2020
Single-photon avalanche diodes (SPADs) fabricated in conventional CMOS processes typically have limited near infra-red (NIR) sensitivity. This is the consequence of isolating the SPADs in a lowly-doped deep N-type well.
Gobinath Jegannathan, Thomas Van den Dries, Maarten Kuijk   +2 more
doaj   +1 more source

Single photon source using laser pulses and two-photon absorption [PDF]

Physical Review A, 2006
We have previously shown that two-photon absorption (TPA) and the quantum Zeno effect can be used to make deterministic quantum logic devices from an otherwise linear optical system. Here we show that this type of quantum Zeno gate can be used with additional two-photon absorbing media and weak laser pulses to make a heralded single photon source.
Jacobs, B. C., Pittman, T. B., Franson, J. D.   +2 more
openaire   +2 more sources

Quantum Single-Photon Control, Storage, and Entanglement Generation with Planar Atomic Arrays

PRX Quantum, 2021
While artificially fabricated patterned metasurfaces are providing paradigm-shifting optical components for classical light manipulation, strongly interacting, controllable, and deterministic quantum interfaces between light and matter in free space ...
K. E. Ballantine, J. Ruostekoski
doaj   +1 more source

Superconducting nanowire single-photon detectors: physics and applications [PDF]

, 2012
Single-photon detectors based on superconducting nanowires (SSPDs or SNSPDs) have rapidly emerged as a highly promising photon-counting technology for infrared wavelengths.
Hadfield, Robert H, Natarajan, C.M., Natarajan, Chandra M, Tanner, M.G., Hadfield, R., Tanner, Michael Geoffrey; id_orcid   +5 more
core   +1 more source

On the Theory of the Intraband Mechanism of Single-Photon Absorption in Semiconductors, Taking into Account the Effect of Coherent Saturation

East European Journal of Physics
A theoretical analysis of the frequency–temperature dependence of the single-photon absorption coefficient of polarized radiation in narrow- and wide-bandgap semiconductors is conducted, considering intraband optical transitions and including the ...
Rustam Y. Rasulov, Voxob R. Rasulov, Forrukh U. Kasimov, Mardonbek Kh. Nasirov, Islam A. Muminov   +4 more
doaj   +1 more source

Two-photon interference at telecom wavelengths for time-bin-encoded single photons from quantum-dot spin qubits [PDF]

, 2015
This work was supported by the JST through its ImPACT Program, NICT, NSF CCR-08 29694, NIST 60NANB9D9170, Special Coordination Funds for Promoting Science and Technology, and the State of Bavaria. C.L. and M.M.F. acknowledge support through the AFOSR.
Natarajan, Chandra M., Yu, Leo, Horikiri, Tomoyuki, Pelc, Jason S., Höfling, Sven, Hadfield, Robert H, Langrock, Carsten, Maier, Sebastian, Natarajan , Chandra M., Fejer, Martin M., Schneider, Christian, Hadfield, Robert H., Tanner, Michael G.; id_orcid, Tanner, Michael G., Abe, Eisuke, Kamp, Martin, Yamamoto, Yoshihisa   +16 more
core   +1 more source

Effect of terahertz irradiation on DNA damage repair in living cells

FEBS Open Bio, EarlyView.
We investigated the effect of terahertz (THz) wave irradiation on DNA double‐strand break (DSB) repair in living cells. We found that THz irradiation enhanced DSB repair at specific frequencies, whereas heat treatment inhibited it, indicating that this effect is nonthermal and frequency‐specific.
Yuya Ueno, Shota Yamazaki, Hiromichi Hoshina, Masahiko Harata   +3 more
wiley   +1 more source