Articles with "single photon" as a keyword



A Tunable Single‐Molecule Light‐Emitting Diode with Single‐Photon Precision

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Published in 2023 at "Advanced Materials"

DOI: 10.1002/adma.202209750

Abstract: A robust single‐molecule light‐emitting diode (SM‐LED) with high color purity, linear polarization, and efficiency tunability is prepared by covalently integrating one fluorescent molecule into nanogapped graphene electrodes. Furthermore, single‐molecule Förster resonance energy transfer from the… read more here.

Keywords: single molecule; molecule; molecule light; single photon ... See more keywords

Hybrid Electroluminescence Device for On‐Demand Single Photon Generation at Room Temperature

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Published in 2024 at "Advanced Optical Materials"

DOI: 10.1002/adom.202401879

Abstract: Recent research focused on single photon emitters (SPEs) hosted by layered semiconductors, particularly hexagonal boron nitride (hBN), has revealed a promising alternative to quantum dots (QDs) for generating single, indistinguishable photons. hBN‐based SPEs offer lower… read more here.

Keywords: generation; electroluminescence; room; room temperature ... See more keywords

Advances and Perspectives in Single Photon Detectors: Principles, Materials, Cooling Systems, and Applications

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Published in 2025 at "Advanced Optical Materials"

DOI: 10.1002/adom.202500138

Abstract: Efficient detection of ultra‐weak optical signals, particularly at the single‐photon level, is critical for the advancement of technologies such as LiDAR and quantum communication. Conventional linear optical detectors exhibit insufficient sensitivity to meet the rigorous… read more here.

Keywords: photon detectors; photon; perspectives single; advances perspectives ... See more keywords

Single Photon Kilohertz Frame Rate Imaging of Neural Activity

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Published in 2022 at "Advanced Science"

DOI: 10.1002/advs.202203018

Abstract: Establishing the biological basis of cognition and its disorders will require high precision spatiotemporal measurements of neural activity. Recently developed genetically encoded voltage indicators (GEVIs) report both spiking and subthreshold activity of identified neurons. However,… read more here.

Keywords: frame; single photon; activity; neural activity ... See more keywords

Ground‐State Photoelectron Circular Dichroism of Methyl p‐Tolyl Sulfoxide by Single‐Photon Ionisation from a Table‐Top Source

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Published in 2022 at "Chemphyschem"

DOI: 10.1002/cphc.202200575

Abstract: Abstract Single‐photon ionisation of enantiopure methyl p‐tolyl sulfoxide by circularly polarised light at 133 nm shows remarkably strong photoelectron circular dichroism (PECD), which has been measured in a velocity‐map‐imaging spectrometer. Both enantiomers were measured, each showing… read more here.

Keywords: methyl tolyl; photon ionisation; tolyl sulfoxide; single photon ... See more keywords

Accuracy of a whole‐body single‐photon emission computed tomography with a thallium‐bromide detector: Verification via Monte Carlo simulations

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Published in 2025 at "Medical Physics"

DOI: 10.1002/mp.17724

Abstract: Single‐photon emission computed tomography (SPECT) devices equipped with cadmium–zinc–telluride (CZT) detectors achieve high contrast resolution because of their enhanced energy resolution. Recently, thallium bromide (TlBr) has gained attention as a detector material because of its… read more here.

Keywords: photon emission; thallium bromide; emission computed; computed tomography ... See more keywords

Enhancement of Single-Photon Purity and Coherence of III-Nitride Quantum Dot with Polarization-Controlled Quasi-Resonant Excitation.

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Published in 2022 at "Small"

DOI: 10.1002/smll.202205229

Abstract: III-Nitride semiconductor-based quantum dots (QDs) play an essential role in solid-state quantum light sources because of their potential for room-temperature operation. However, undesired background emission from the surroundings deteriorates single-photon purity. Moreover, spectral diffusion causes… read more here.

Keywords: photon purity; excitation; resonant excitation; quasi resonant ... See more keywords

High-Purity Single Photon Extraction from Diamond Nitrogen-Vacancy Centers in Low-Numerical-Aperture Optical Systems via Defect-Selective Metalens Printing.

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Published in 2025 at "Small"

DOI: 10.1002/smll.202510745

Abstract: Abstract Solid‐state quantum emitters, such as nitrogen‐vacancy (NV) centers in diamond, offer a promising route toward scalable quantum technologies. However, their random spatial distribution and inherently broad dipole emission severely hinder high‐purity single‐photon extraction—particularly in… read more here.

Keywords: high purity; purity; purity single; single photon ... See more keywords

Extensive brain infarction involving deep structures during an acetazolamide-challenged single-photon emission computed tomography scan in a patient with moyamoya disease

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Published in 2017 at "Child's Nervous System"

DOI: 10.1007/s00381-017-3512-0

Abstract: BackgroundAcetazolamide-challenged brain single-photon emission computed tomography (SPECT) is used for the evaluation of cerebral perfusion in cerebrovascular diseases including moyamoya disease (MMD). Not a few patients experience adverse side effects during the acetazolamide-challenged brain SPECT,… read more here.

Keywords: acetazolamide challenged; brain; challenged brain; infarction involving ... See more keywords

Single-photon laser spectroscopy of cold antiprotonic helium

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Published in 2018 at "Hyperfine Interactions"

DOI: 10.1007/s10751-018-1518-y

Abstract: Some laser spectroscopy experiments carried out by the Atomic Spectroscopy and Collisions Using Slow Antiprotons (ASACUSA) collaboration to measure the single-photon transition frequencies of antiprotonic helium (p¯He+≡p¯+He2++e−$\overline {p}\text {He}^{+}\equiv \overline {p}+\text {He}^{2+}+e^{-}$) atoms are reviewed.… read more here.

Keywords: antiprotonic helium; single photon; spectroscopy; laser spectroscopy ... See more keywords

Nonclassical Properties in Optomechanical System Controlled by Single-photon Catalysis

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Published in 2019 at "International Journal of Theoretical Physics"

DOI: 10.1007/s10773-019-04321-2

Abstract: A scheme is proposed to investigate the influence of single-photon catalysis operation on the dynamics of optomechanical system. The nonclassicalities of the catalyzed states are studied by analyzing mean photon(phonon) number, photon(phonon) number distribution, Mandel… read more here.

Keywords: photon; photon catalysis; catalysis; optomechanical system ... See more keywords