Concept
Single-photon source
Publications associées (66)
Investigation of room-temperature single-photon emitters in GaN-based materials and GaN/AlN quantum dots
Over the past decade, quantum photonics platforms aiming at harnessing the fundamental properties of single particles, such as quantum superposition and quantum entanglement, have flourished. In this context, single-photon emitters capable of operating at ...
EPFL2024High-rate, high-resolution single photon X-ray imaging: Medipix4, a large 4-side buttable pixel readout chip with high granularity and spectroscopic capabilities
Jean-Michel Sallese, Adil Koukab, Viros Sriskaran
The Medipix4 chip is the latest member in the Medipix/Timepix family of hybrid pixel detector chips aimed at high -rate spectroscopic X-ray imaging using high -Z materials. It can be tiled on all 4 sides making it ideal for constructing large -area detecto ...
Iop Publishing Ltd2024Down-conversion of a single photon as a probe of many-body localization
Decay of a particle into more particles is a ubiquitous phenomenon to interacting quantum systems, taking place in colliders, nuclear reactors or solids. In a nonlinear medium, even a single photon would decay by down-converting (splitting) into lower-freq ...
NATURE PORTFOLIO2023PET REBINNING WITH REGULARIZED DENSITY SPLINES
PET reconstruction algorithms have long relied on sinogram rebinning. However, as detectors grow smaller in a recent wave of cutting-edge scanners, individual sensors no longer accrue hundreds of photons. Instead, most detect a single photon or none at all ...
New York2023Microscopic origin of polarization-entangled Stokes-anti-Stokes photons in diamond
Christophe Marcel Georges Galland
Time-correlated Stokes-anti-Stokes (SaS) scattering has been studied in different transparent media, more frequently in diamond. While the nonclassical nature of the SaS scattered photons has been well established, the presence of entanglement in this spon ...
College Pk2023Assessment of the Bundle SNSPD Plus FPGA-Based TDC for High-Performance Time Measurements
Christophe Marcel Georges Galland, Andrea Costa
Counting single photons and measuring their arrival time is of crucial importance for imaging and quantum applications that use single photons to outperform classical techniques. The investigation of the coincidence, i.e. correlation, between photons can b ...
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC2022Single photon detection with amorphous silicon-based microchannel plates: A Monte Carlo model
Christophe Ballif, Jonathan Emanuel Thomet, Janina Christine Isabelle Löffler, Samira Alexandra Frey
Microchannel plates based on amorphous silicon have the inherent capability to overcome the existing spatial and temporal resolution limitations of single photon detectors. A Monte Carlo model-based study is presented here that serves to exploit their full ...
2022n-photon blockade with an n-photon parametric drive
We propose a mechanism to engineer an n-photon blockade in a nonlinear cavity with an n-photon parametric drive lambda(adagger n + an). When an n-photon-excitation resonance condition is satisfied, the presence of n photons in the cavity suppress ...
AMER PHYSICAL SOC2021System, device and method for quantum correlation measurement with single photon avalanche diode arrays
Edoardo Charbon, Claudio Bruschini, Ivan Michel Antolovic
A system for photon correlation of an illuminated object and/or a light source, including a light source for illuminating the object or to correlate, an optical system having an object-facing side configured to face the object or the light source and a pro ...
2020Toward Bright and Pure Single Photon Emitters at 300 K Based on GaN Quantum Dots on Silicon
Nicolas Grandjean, Raphaël Butté, Johann Nicolaï Stachurski, Gordon Jens Callsen, Sebastian Pascal Tamariz Kaufmann, Kanako Shojiki
Quantum dots (QDs) based on III-nitride semi-conductors are promising for single photon emission at noncryogenic temperatures due to their large exciton binding energies. Here, we demonstrate GaN QD single photon emitters operating at 300 K with g((2)) (0) ...
AMER CHEMICAL SOC2020