Results 31 to 40 of about 5,332,783 (303)

Single Photon Approach for Chirality Sensing

open access: yesPhotonics, 2023
We developed a high sensitivity optical sensor for circular birefringence using a heralded photon source. The sensor can be employed for chirality measurements and, being based on single photons, can be exploited for fragile biological sample or in ...
Fabrizio Sgobba   +4 more
doaj   +1 more source

Free space quantum key distribution over 500 meters using electrically driven quantum dot single-photon sources-a proof of principle experiment [PDF]

open access: yes, 2014
The authors gratefully acknowledge expert sample preparation by M Emmerling and A Wolf as well as financial support by the German Ministry of Education and Research through the project QPENS and QUASAR.Highly efficient single-photon sources (SPS) can ...
Vest, Gwenaelle   +14 more
core   +1 more source

Single-Photon and Photon-Number-Resolving Detectors

open access: yesIEEE Photonics Journal, 2012
Several important advances were reported in single-photon detectors and photon-number-resolving detectors in 2011. New materials with smaller superconducting gaps were demonstrated for superconducting nanowire single-photon detectors (SNSPDs) that led to
R. P. Mirin, S. W. Nam, M. A. Itzler
doaj   +1 more source

Reconfigurable photonics with on-chip single-photon detectors [PDF]

open access: yesNature Communications, 2021
AbstractIntegrated quantum photonics offers a promising path to scale up quantum optics experiments by miniaturizing and stabilizing complex laboratory setups. Central elements of quantum integrated photonics are quantum emitters, memories, detectors, and reconfigurable photonic circuits.
Samuel Gyger   +9 more
openaire   +3 more sources

Controllable single-photon routing between two waveguides by two giant two-level atoms

open access: yesFrontiers in Physics, 2022
We investigate the single-photon quantum routing composed of two infinite waveguides coupled to two giant two-level atoms. The exact expressions of the single-photon transmission and reflection amplitudes are derived with the real-space approach.
Y. Q. Zhang   +19 more
doaj   +1 more source

Single Photons by Quenching the Vacuum [PDF]

open access: yesPhysical Review Letters, 2019
9 pages, 10 ...
Sánchez-Burillo, E.   +3 more
openaire   +7 more sources

Illumination Induced Negative Differential Resistance in InGaAs Avalanche Photodiode

open access: yesIEEE Access
This work presents a novel InGaAs/InP avalanche photodiode, fabricated in the separate absorption, grading, charge, and multiplication configuration operated at non-cryogenic conditions under low-frequency ramp gating.
Afshan Khaliq   +9 more
doaj   +1 more source

Single Photon Quantum Cryptography [PDF]

open access: yesPhysical Review Letters, 2002
We report the full implementation of a quantum cryptography protocol using a stream of single photon pulses generated by a stable and efficient source operating at room temperature. The single photon pulses are emitted on demand by a single nitrogen-vacancy (NV) color center in a diamond nanocrystal. The quantum bit error rate is less that 4.6% and the
Beveratos, Alexios   +5 more
openaire   +4 more sources

Subcentimeter depth resolution using a single-photon counting time-of-flight laser ranging system at 1550 nm wavelength [PDF]

open access: yes, 2007
We demonstrate subcentimeter depth profiling at a stand off distance of 330m using a time-of-flight approach based on time-correlated single-photon counting.
Nam, Sae Woo   +13 more
core   +1 more source

Sub-megahertz linewidth single photon source

open access: yesAPL Photonics, 2016
We report 100% duty cycle generation of sub-MHz single photon pairs at the rubidium D1 line using cavity-enhanced spontaneous parametric downconversion.
Markus Rambach   +3 more
doaj   +1 more source

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