WebDec 10, 2011 · So does this mean the latest tentative results for higgs->photon,photon rates puts a lower limit on any yet undiscovered heavy charged particles. i.e a charged particle somewhat heavier than the top quark would noticably contribute to an increased higgs->photon,photon rate. WebFeb 14, 2024 · Axion couplings to photons could induce photon-axion conversion in the presence of magnetic fields in the Universe. This conversion could impact various cosmic distance measurements, such as luminosity distances to type Ia supernovae and angular distances to galaxy clusters, in different ways. In this paper we consider different …
Light Fantastic: Counting Single Photons at Unprecedented Rates
Web1 day ago · 14 Apr 2024. Cool concept: the new single-photon detector makes use of multiple superconducting nanowires. (Courtesy: M Perrenoud and G Resta/UNIGE) A single-photon detector that could boost the performance of some quantum key distribution (QKD) cryptography systems has been unveiled by Hugo Zbinden and colleagues at the … WebJun 1, 2015 · We show a 90±5% enhancement on the heralded photon rate at the cost of only 14±2% reduction to the signal-to-noise ratio, close to the performance found using only time division multiplexed pulses. list of dinosaur king characters
4. Energy, Power, and Photons - Brown University
WebApr 12, 2013 · However, the photon rate of arrival is also increased by r, making the total power increase r^2. That can't be right. I suspect the problem is that the photon interception rate does not really increase, probably because their velocity relative to the collector is still c, but don't understand this. WebDec 13, 2001 · Electroluminescence from a single quantum dot within the intrinsic region of a p-i-n junction is shown to act as an electrically driven single-photon source. At low injection currents, the dot electroluminescence spectrum reveals a single sharp line due to exciton recombination, while another line due to the biexciton emerges at higher currents. WebFeb 26, 2024 · A photon is the quantum of electromagnetic radiation. The term quantum is the smallest elemental unit of a quantity, or the smallest discrete amount of something. … list of dinosaurs fandom