Results 41 to 50 of about 3,860,798 (288)

A SEARCH FOR POINT SOURCES OF EeV PHOTONS [PDF]

open access: yesThe Astrophysical Journal, 2014
28 pages, 10 figures, accepted for publication in The Astrophysical ...
Pierre Auger Collaboration   +380 more
openaire   +15 more sources

Photon acceleration in vacuum [PDF]

open access: yes, 2006
A new process associated with the nonlinear optical properties of the electromagnetic vacuum, as predicted by quantum electrodynamics, is described. This can be called photon acceleration in vacuum, and corresponds to the frequency shift that takes place
Mendonça, J.T.   +3 more
core   +4 more sources

Metastable silica high pressure polymorphs as structural proxies of deep Earth silicate melts

open access: yesNature Communications, 2018
As silica melts are believed to be important components of the Earth’s mantle, their structure should determine many of its properties. Here, the authors identify two crystalline modifications of SiO2, whose local structures closely resemble those of ...
E. Bykova   +13 more
doaj   +1 more source

Enhancing quantum cryptography with quantum dot single-photon sources

open access: yesnpj Quantum Information, 2022
Quantum cryptography harnesses quantum light, in particular single photons, to provide security guarantees that cannot be reached by classical means. For each cryptographic task, the security feature of interest is directly related to the photons’ non ...
Mathieu Bozzio   +9 more
doaj   +1 more source

Photon statistics characterization of a single-photon source

open access: yesNew Journal of Physics, 2004
n a recent experiment, we reported the time-domain intensity noise measurement of a single photon source relying on single molecule fluorescence control. In this article we present data processing, starting from photocount timestamps. The theoretical analytical expression of the time-dependent Mandel parameter Q(T) of an intermittent single photon ...
Alleaume, Romain   +3 more
openaire   +2 more sources

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

open access: yes, 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.   +6 more
core   +1 more source

Cavity-enhanced two-photon interference using remote quantum dot sources [PDF]

open access: yes, 2015
Quantum dots in cavities have been shown to be very bright sources of indistinguishable single photons. Yet the quantum interference between two such bright quantum dot sources, a critical step for photon-based quantum computation, still needs to be ...
Antón, C.   +12 more
core   +1 more source

Perfect single-photon sources [PDF]

open access: yes, 2023
We introduce the "gapped coherent state" in the form of a single-photon source (SPS) that consists of uncorrelated photons as a background, except that we demand that no two photons can be closer in time than a time gap $t_\mathrm{G}$.
Khalid, Sana, Laussy, Fabrice P.
core   +1 more source

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

open access: yesFEBS 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   +3 more
wiley   +1 more source

Optimizing photoactivation of PA‐mCherry for optical pooled CRISPR screens

open access: yesFEBS 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   +3 more
wiley   +1 more source

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