Results 51 to 60 of about 5,332,783 (303)

Single photon production by rephased amplified spontaneous emission

New Journal of Physics, 2014
The production of single photons using rephased amplified spontaneous emission is examined. This process produces single photons on demand with high efficiency by detecting the spontaneous emission from an atomic ensemble, then applying a population ...
R N Stevenson, M R Hush, A R R Carvalho, S E Beavan, M J Sellars, J J Hope   +5 more
doaj   +1 more source

Evaluation of Parameters Effect in Multiphoton Quantum Key Distribution Over Fiber Optic

IEEE Access, 2018
BB84 is a single photon that has been widely used since 1984 as the unconditional security of key distribution. Recently, the idea of multiphoton QKD was proposed to exchange the key using the rotational of polarization by over multi-stages protocol.
Nur Ziadah Harun, Zuriati Ahmad Zukarnain, Zurina Mohd Hanapi, Idawaty Ahmad   +3 more
doaj   +1 more source

High Purcell factor photonic crystal cavities for single photon sources [PDF]

, 2006
Enhancement of spontaneous emission is of crucial importance in the design of high efficiency single photon sources. This can be achieved by creating defect cavities with both high Q and small effective mode volume, which results in a high Purcell factor.
Cryan, MJ, Rarity, JG, Sanchis Martinez, L, Singh, V, Ho, Y-LD   +4 more
core   +1 more source

Mutant p53R273H disrupts PDPK1 homodimerization and contributes to PDPK1 activation

Molecular Oncology, EarlyView.
How mutant p53R273H drives AKT signaling is unclear. We show that p53R273H, but not wild‐type, directly binds PDPK1 via a mutation‐dependent conformational change. This interaction disrupts inhibitory PDPK1 homodimerization and enhances AKT phosphorylation.
Mei Chee Lim, Alvin Kunyao Guo, Yoko Itahana, Srinivasaraghavan Kannan, Valerie Goh, Mingmin Ong, Terina Yan Wen Tay, Weiying Ye, Sabhashina Radha Krishnan, Jun Nishiyama, Chandra S Verma, Koji Itahana   +11 more
wiley   +1 more source

Photon-Counting Spectrometers Based on Superconducting Nanowire Single-Photon Detectors

Electromagnetic Science
Optical spectrum analysis provides a wealth of information about the physical world. Throughout the development of optical spectrum analysis, sensitivity has been one of the major topics and has become essential in applications dealing with faint light ...
Mingzhong Hu, Jingyuan Zheng, Kaiyu Cui, Wei Zhang, Yidong Huang   +4 more
doaj   +1 more source

Enhancement of Single-Photon Emission Rate from InGaAs/GaAs Quantum-Dot/Nanowire Heterostructure by Wire-Groove Nanocavity

Nanomaterials, 2019
Spontaneous emission of luminescent material is strongly dependent on the surrounding electromagnetic environment. To enhance the emission rate of a single-photon emitter, we proposed a wire-groove resonant nanocavity around the single-photon emitter. An
Wei Wei, Xin Yan, Jie Liu, Bing Shen, Wei Luo, Xiaofeng Ma, Xia Zhang   +6 more
doaj   +1 more source

Modelling the polarisation mode control of single quantum-dot emission in elliptical micro-pillar microcavities based on DBR mirror pairs using the FDTD method [PDF]

, 2006
We use the finite difference time domain method (FDTD) to investigate polarisation control of single-photon emission from single quantum dots confined in elliptical micro-pillar microcavities.
Cryan, MJ, C. J. Railton, I. J. Craddock, Rarity, JG, T. Cao, Ivanov, P, Craddock, IJ, Ho, Y-LD, Cao, T, P. S. Ivanov, Y. -L. D. Ho, Railton, CJ, M. J. Cryan, J. G. Rarity   +13 more
core   +1 more source

Raman‐based label‐free microscopic analysis of the pancreas in living zebrafish larvae

FEBS Open Bio, EarlyView.
Forward stimulated Raman scattering (F‐SRS) and epi coherent anti‐Stokes Raman scattering (E‐CARS) allow label‐free discrimination of distinct subcellular structures in the pancreas of living zebrafish larvae. Given the straightforward applicability, we anticipate broad implementation of Raman microscopy in other organs and across various biomedical ...
Noura Faraj, Eline M. F. de Lange, Klaas A. Sjollema, Ben N. G. Giepmans   +3 more
wiley   +1 more source

Solid-state single photon sources: the nanowire antenna [PDF]

, 2009
International audienceWe design several single-photon-sources based on the emission of a quantum dot embedded in a semiconductor (GaAs) nanowire. Through various taper designs, we engineer the nanowire ends to realize efficient metallic-dielectric ...
Sauvan, Christophe, Hugonin, Jean-Paul, Friedler, Inbal, Claudon, Julien, Gérard, Jean-Michel, Lalanne, Philippe   +5 more
core   +4 more sources

Optimizing photoactivation of PA‐mCherry for optical pooled CRISPR screens

FEBS Open Bio, EarlyView.
Photoactivatable PA‐mCherry finds widespread use to optically tag individual cells. However, confocal 405 nm UV laser‐scanning (normal scan) is much less efficient than widefield UV illumination, limiting the use of PA‐mCherry on confocal instruments. We remedy this limitation by reporting that rapid and repeated confocal scanning with a low‐intensity,
Sravasti Mukherjee, Giulia Zanetti, Bram van den Broek, Kees Jalink   +3 more
wiley   +1 more source