Journal ArticleJPhys Photonics · April 1, 2024
Cadmium sulfide (CdS) pigments have degraded in several well-known artworks, but the influence of pigment properties and environmental conditions on the degradation process have yet to be fully understood. Traditional non-destructive analysis techniques pr ...
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ConferenceCLEO: Applications and Technology, CLEO: A and T 2024 in Proceedings CLEO 2024 - Part of Conference on Lasers and Electro-Optics · January 1, 2024
Melanoma, the most aggressive skin cancer, is responsible for around 10, 000 deaths annually. We are developing a diagnostic biomarker based on femtosecond pump-probe microscopy of melanin, a natural pigment found in most melanoma. ...
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Journal ArticleOpt Express · August 29, 2022
Pump-probe microscopy of melanin in tumors has been proposed to improve diagnosis of malignant melanoma, based on the hypothesis that aggressive cancers disaggregate melanin structure. However, measured signals of melanin are complex superpositions of mult ...
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Journal ArticlePhysical review letters · February 2022
Fluctuation theorems are fundamental extensions of the second law of thermodynamics for small nonequilibrium systems. While work and heat are equally important forms of energy exchange, fluctuation relations have not been experimentally assessed for the ge ...
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Journal ArticlePhys. Rev. Lett. · March 19, 2021
Fluctuation theorems are fundamental extensions of the second law of
thermodynamics for small nonequilibrium systems. While work and heat are
equally important forms of energy exchange, fluctuation relations have not been
experimentally assessed for the ge ...
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Journal ArticleOptics letters · March 2021
Pump-probe microscopy is an emerging nonlinear imaging technique based on high repetition rate lasers and fast intensity modulation. Here, we present new methods for pump-probe microscopy that keep the beam intensity constant and instead modulate the inter ...
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Journal ArticleSci Adv · September 2020
Mandates for mask use in public during the recent coronavirus disease 2019 (COVID-19) pandemic, worsened by global shortage of commercial supplies, have led to widespread use of homemade masks and mask alternatives. It is assumed that wearing such masks re ...
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Journal Article · June 22, 2020
AbstractMandates for mask use in public during the recent COVID-19 pandemic, worsened by global shortage of commercial supplies, have led to widespread use of homemade masks and mask alternatives. It is assumed that wearing ...
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Journal ArticleQuantum Science and Technology · March 1, 2020
We report dispersive coupling of an optically trapped nanoparticle to the field of a Fabry-Perot cavity in high vacuum. We demonstrate nanometer-level control in positioning the particle with respect to the cavity field, which allows access to linear, quad ...
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Journal ArticleNature communications · March 2020
Feedback control mechanisms are ubiquitous in science and technology, and play an essential role in regulating physical, biological and engineering systems. The standard second law of thermodynamics does not hold in the presence of measurement and feedback ...
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Journal ArticleScience (New York, N.Y.) · February 2020
Quantum control of complex objects in the regime of large size and mass provides opportunities for sensing applications and tests of fundamental physics. The realization of such extreme quantum states of matter remains a major challenge. We demonstrate a q ...
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Journal ArticlePhysical review letters · March 2019
We report three-dimensional (3D) cooling of a levitated nanoparticle inside an optical cavity. The cooling mechanism is provided by cavity-enhanced coherent scattering off an optical tweezer. The observed 3D dynamics and cooling rates are as theoretically ...
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ConferenceOptics InfoBase Conference Papers · January 1, 2019
Optical levitation of dielectric particles is a promising platform for room temperature quantum optomechanics. The challenge is to control the mechanical motion at the Heisenberg uncertainty limit. We present a nanophotonic interface enabling strong and ef ...
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Journal ArticleOptica · December 20, 2018
Quantum control of levitated dielectric particles is an emerging subject in quantum optomechanics. A major challenge is to efficiently measure and manipulate the particle’s motion at the Heisenberg uncertainty limit. Here we present a nanophotonic interfac ...
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Journal ArticleApplied Physics Letters · May 30, 2016
We demonstrate an optical conveyor belt for levitated nanoparticles over several centimeters inside both air-filled and evacuated hollow-core photonic crystal fibers (HCPCF). Detection of the transmitted light field allows three-dimensional read-out of the ...
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Journal ArticleProceedings of the National Academy of Sciences of the United States of America · August 2013
The coupling of a levitated submicron particle and an optical cavity field promises access to a unique parameter regime both for macroscopic quantum experiments and for high-precision force sensing. We report a demonstration of such controlled interactions ...
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