Sentences with phrase «of single photons by»

Weizmann Institute scientists have demonstrated for the first time a photonic router — a quantum device based on a single atom that enables routing of single photons by single photons.

We study the group velocity of single photons by measuring a change in their arrival time that results from changing the beam's transverse spatial structure.

The team demonstrated that this hybrid device enhances the collection efficiency of single photons by more than a factor of 10 compared to a single nanocrystal without the antenna, without the need for complex and bulky optical collection systems used in many other experiments.

Not exact matches

The detector enables imaging in so - called single photon counting regime allowing acquiring radiographs with theoretically unlimited dynamic range (in practice limited just by the number of detected photons).

The simplicity and low cost of a smell test — $ 26.95 retail, before additional doctor or hospital charges — make it especially appealing in neurology, a field dominated by positron - emission tomography scans, dopamine transporter single - photon emission computed tomography imaging and other expensive technologies.

The patron animal of quantum theory poses for a unique portrait in which the camera and the sitter don't share a single photon — except by entanglement

A research group led by Junichi Isoya, professor emeritus, University of Tsukuba and Tokuyuki Teraji, principal researcher, Optical and Electronic Materials Unit, NIMS, has successfully fabricated for the first time in the world single - photon sources of SiV (silicon vacancy) centers — one of the color centers in diamond during the growth of thin film diamond, which have high purity and crystalline quality — by introducing them at extremely low concentrations.

In the largest functional brain imaging study to date, the Amen Clinics (Newport Beach, CA) compared 46,034 brain SPECT (single photon emission computed tomography) imaging studies provided by nine clinics, quantifying differences between the brains of men and women.

Two qubits each carrying a binary digit (1 or 0)-- encoded, for example, in the polarization of photons — could be replaced by a single photon with four possible states, capable of specifying both digits.

A method for loading the information carried by two photons into a single photon, described in Nature Photonics, suggest a way to boost the efficiency of data transmission in such systems.

Secondly, parts of their lab had to be moved to two locations in the city, which as Tittel explains was particularly tricky for the measurement station at City Hall which included state - of - the - art superconducting single - photon detectors developed by the National Institute for Standards and Technology, and NASA's Jet Propulsion Laboratory.

The state is set just by sending a single particle of light — or photon — from the right or the left via an optical fiber.

In contrast, the light source developed by Leonid Krivitsky and co-workers at the A * STAR Data Storage Institute and A * STAR Institute of Medical Biology is a truly single - photon source and hence eliminates the need to statistically analyze measurement results, thus enhancing measurement accuracy1.

Krivitsky notes that rod - cell efficiency is comparable to the quantum efficiencies of state - of - the - art human - made single - photon detectors such as photomultipliers (40 per cent) and avalanche photodiodes (50 per cent); remarkably, rod cells occupy an area of only 5 by 50 micrometers and contain their own power supply.

«By chemically modifying the nanotube surface to controllably introduce light - emitting defects, we have developed carbon nanotubes as a single photon source, working toward implementing defect - state quantum emitters operating at room temperature and demonstrating their function in technologically useful wavelengths,» said Stephen Doorn, leader of the project at Los Alamos and a member of the Center for Integrated Nanotechnologies (CINT).

Holographic atomic memory, invented and constructed by physicists from the Faculty of Physics at the University of Warsaw, is the first device able to generate single photons on demand in groups of several dozen or more.

«What makes tungsten diselenide extremely versatile is that the color of the single photons emitted by the quantum dots is correlated with the quantum dot spin,» said first author Chitraleema Chakraborty.

The NIST paper was submitted to PRL with another paper by a team at the University of Vienna in Austria who used a similar high - efficiency single - photon detector provided by NIST to perform a Bell test that achieved similar results.

In a significant step forward for quantum computing in silicon - the same material used in today's computers — a team led by researchers at Princeton University successfully coupled a single electron's quantum information, or spin, to a particle of light, or photon.

Now consider a single molecule that is supposed to loose more rapidly its energy by collision after absorption of a single photon.

There is a small effect from the radiative properties of the «GHG's», but they simply act as a sort of hybrid thermal / optical delay line which delays the flow of any single photon through the Sun / Earth / Atmosphere / Universe system by causing it to make multiple «bounces» through the system: surface / GHG / surface / GHG / escape to the energy free void of space.

Gilles says, «Take a single picture of a star with a telescope, evaluate the background around it by measuring the number of photons in similar apertures on the «black» sky, and the associated statistical photon noise, and you very easily have a 5 sigma signal.»