Results 1 to 10 of about 279,013 (291)

On-chip spin-photon entanglement based on photon-scattering of a quantum dot

open access: yesnpj Quantum Information, 2023
The realization of on-chip quantum interfaces between flying photons and solid-state spins is a key building block for quantum-information processors, enabling, e.g., distributed quantum computing, where remote quantum registers are interconnected by ...
Ming Lai Chan   +9 more
doaj   +1 more source

Deterministic photon source interfaced with a programmable silicon-nitride integrated circuit

open access: yesnpj Quantum Information, 2023
We develop a quantum photonic platform that interconnects a high-quality quantum dot single-photon source and a low-loss photonic integrated circuit made in silicon nitride.
Ying Wang   +12 more
doaj   +1 more source

The development of active optical clock

open access: yesAAPPS Bulletin, 2023
The atomic clocks, whether operating at optical or microwave region, can be divided into two categories according to their working mode, namely the passive clocks and active clocks.
Jia Zhang   +3 more
doaj   +1 more source

All-Optical Parametric-Resonance Magnetometer Based on 4He Atomic Alignment

open access: yesSensors, 2022
Parametric-resonance magnetometer is a high-sensitivity quantum sensor characterized by applying the non-resonant radio-frequency (RF) fields to the atomic ensemble. The RF fields lead to crosstalk in the multi-sensor design, thus disturbing the magnetic-
Bowen Wang   +4 more
doaj   +1 more source

An inhibited laser

open access: yesCommunications Physics, 2022
Lasers in general are operated using a cavity resonant with emitters. In this study, the authors demonstrated a laser operating under an anti-resonant condition, where the emitter resonance is equally detuned from two Fabry–Perot fringes.
Tiantian Shi, Duo Pan, Jingbiao Chen
doaj   +1 more source

Effective Excess Noise Suppression in Continuous-Variable Quantum Key Distribution through Carrier Frequency Switching

open access: yesEntropy, 2023
Continuous-variable quantum key distribution (CV-QKD) is a promising protocol that can be easily integrated with classical optical communication systems.
Jing Dong   +6 more
doaj   +1 more source

Active optical clock lasing on the Cs 7S1/2-6P3/2 transition under a weak magnetic field

open access: yesFrontiers in Physics, 2022
In the bad-cavity limit, the collective atomic dipole is highly coherent, resulting in the phase information of an active optical clock (AOC) laser primarily stored in the atomic gain medium.
Tiantian Shi   +4 more
doaj   +1 more source

A Dual-Frequency Faraday Laser

open access: yesIEEE Photonics Journal, 2020
The Faraday laser, with Faraday anomalous dispersion optical filter (FADOF) as frequency-selection element, is a natural narrow-bandwidth light source for laser physic experiments. In this work, a dual-frequency (DF) Faraday laser is demonstrated for the
Tiantian Shi   +7 more
doaj   +1 more source

On-chip deterministic operation of quantum dots in dual-mode waveguides for a plug-and-play single-photon source

open access: yesNature Communications, 2020
Resonantly-excited quantum-dot-based single photon sources feature very high purity, but also limited efficiency due to the need to suppress the residual pump.
Ravitej Uppu   +11 more
doaj   +1 more source

Quantum Graphical Models and Belief Propagation [PDF]

open access: yes, 2007
Belief Propagation algorithms acting on Graphical Models of classical probability distributions, such as Markov Networks, Factor Graphs and Bayesian Networks, are amongst the most powerful known methods for deriving probabilistic inferences amongst large
Accardi   +39 more
core   +4 more sources

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