Results 1 to 10 of about 3,964,041 (251)

Achieving the ultimate optical resolution [PDF]

open access: yesEPJ Web of Conferences, 2022
The accurate estimation of the separation between two signals is at the core of many modern technologies. We show new quantum-inspired schemes able to estimate that separation at the quantum limit. The method works in the spatial, temporal, and frequency
Sánchez-Soto Luis L.   +4 more
doaj   +1 more source

DC Ionic Conductivity in KTP and Its Isomorphs: Properties, Methods for Suppression, and Its Connection to Gray Tracking

open access: yesCrystals, 2022
We study the DC conductivity in potassium titanyl phosphate (KTiOPO4, KTP) and its isomorphs KTiOAsO4 (KTA) and Rb1%K99%TiOPO4 (RKTP) and introduce a method by which to reduce the overall ionic conductivity in KTP by a potassium nitrate treatment ...
Laura Padberg   +7 more
doaj   +1 more source

Improved non-linear devices for quantum applications

open access: yesNew Journal of Physics, 2021
In this paper, we review the state of the art of mode selective, integrated sum-frequency generation devices tailored for quantum optical technologies. We explore benchmarks to assess their performance and discuss the current limitations of these devices,
J Gil-Lopez   +7 more
doaj   +1 more source

Indirect overgrowth as a synthesis route for superior diamond nano sensors

open access: yesScientific Reports, 2020
The negatively charged nitrogen-vacancy ( $$\hbox {NV}^{-}$$ NV - ) center shows excellent spin properties and sensing capabilities on the nanoscale even at room temperature.
Christoph Findler   +4 more
doaj   +1 more source

A two-channel, spectrally degenerate polarization entangled source on chip

open access: yesnpj Quantum Information, 2017
Quantum Information: the realization of integrated entangled photons sources In the context of quantum technology, integrated photonic devices demonstrated great potential to perform quantum tasks stably with ease.
Linda Sansoni   +6 more
doaj   +1 more source

Highly efficient frequency conversion with bandwidth compression of quantum light

open access: yesNature Communications, 2017
In quantum information technology the output of one element often does not match the required frequency and bandwidth of the input of the next element. Here, Allgaieret al.
Markus Allgaier   +8 more
doaj   +1 more source

Bayesian-Based Hybrid Method for Rapid Optimization of NV Center Sensors

open access: yesSensors, 2023
NV centers are among the most promising platforms in the field of quantum sensing. Magnetometry based on NV centers, especially, has achieved concrete development in areas of biomedicine and medical diagnostics.
Jiazhao Tian   +4 more
doaj   +1 more source

Direct generation of genuine single-longitudinal-mode narrowband photon pairs

open access: yesNew Journal of Physics, 2015
The practical prospect of quantum communication and information processing relies on sophisticated single-photon pairs, which feature a controllable waveform, narrow spectrum, excellent purity, fiber compatibility, and miniaturized design.
Kai-Hong Luo   +8 more
doaj   +1 more source

Recent Progress in Chiral Topological Quantum Interface

open access: yesFrontiers in Physics, 2022
Chiral quantum optics and Topological photonics are both emerging field of research, which have attracted great attention in recent years. Chiral quantum optics provides a new approach to achieve full quantum control of light-matter interaction in a ...
Ping Jiang   +3 more
doaj   +1 more source

Fabrication limits of waveguides in nonlinear crystals and their impact on quantum optics applications

open access: yesNew Journal of Physics, 2019
Waveguides in nonlinear materials are a key component for photon pair sources and offer promising solutions to interface quantum memories through frequency conversion.
Matteo Santandrea   +3 more
doaj   +1 more source

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