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Microwave photon detection is a key technology for low-temperature superconducting electronics and quantum information processing. A promising possibility is to use switching processes in parametric superconducting devices at criticality,…

Quantum Physics · Physics 2026-04-21 Kirill Petrovnin , Jiaming Wang , Gheorghe Sorin Paraoanu

Cavity optomechanics has served as a platform for studying the interaction between light and micromechanical motion via radiation pressure. Here we observe such phenomena with a graphene mechanical resonator coupled to an electromagnetic…

Mesoscale and Nanoscale Physics · Physics 2015-06-19 X. Song , M. Oksanen , J. Li , P. J. Hakonen , M. A. Sillanpaa

The dependence on chopper frequency of the effective thermal diffusivity and effective thermal conductivity in photoacoustic experiments is discussed. The theoretical model of a two-layer structure at rear-surface illumination in the high…

Condensed Matter · Physics 2009-11-07 Yu. G. Gurevich , G. N. Logvinov , N. Munoz-Aguirre , L. Martinez-Perez

Quantum vacuum fluctuations impose strict limits on precision displacement measurements, those of interferometric gravitational-wave detectors among them. Introducing squeezed states into an interferometer's readout port can improve the…

Quantum Physics · Physics 2016-02-03 Eric Oelker , Tomoki Isogai , John Miller , Maggie Tse , Lisa Barsotti , Nergis Mavalvala , Matthew Evans

We study relaxation of a spin in magnetic resonance force microscopy (MRFM) experiments. We evaluate the relaxation rate for the spin caused by high-frequency mechanical noise of the cantilever under the conditions of adiabatic spin…

Mesoscale and Nanoscale Physics · Physics 2009-11-07 D. Mozyrsky , I. Martin , D. Pelekhov , P. C. Hammel

We have developed novel instrumentation for making Lagrangian measurements of temperature in diverse fluid flows. A small neutrally buoyant capsule is equipped with on-board electronics which measure temperature and transmit the data via a…

Fluid Dynamics · Physics 2011-12-06 Woodrow L. Shew , Yoann Gasteuil , Mathieu Gibert , Pascal Metz , Jean-Francois Pinton

The radiation-pressure driven interaction of a coherent light field with a mechanical oscillator induces correlations between the amplitude and phase quadratures of the light. These correlations result in squeezed light -- light with…

Stochastic switching between the two bistable states of a strongly driven mechanical resonator enables detection of weak signals based on probability distributions, in a manner that mimics biological systems. However, conventional silicon…

Mesoscale and Nanoscale Physics · Physics 2019-03-27 Robin J. Dolleman , Pierpaolo Belardinelli , Samer Houri , Herre S. J. van der Zant , Farbod Alijani , Peter G. Steeneken

Contact Resonance Force Microscopy (CR-FM) is a leading AFM technique for measuring viscoelastic nano-mechanical properties. Conventional piezo-excited CR-FM measurements have been limited to imaging in air, since the "forest of peaks"…

Mesoscale and Nanoscale Physics · Physics 2014-10-14 Marta Kocun , Aleksander Labuda , Anil Gannepalli , Roger Proksch

Part I shows that quantitative measurements of heat capacity are theoretically possible inside diamond anvil cells via high-frequency Joule heating (100 kHz to 10 MHz), opening up the possibility of new methods to detect and characterize…

Materials Science · Physics 2017-04-26 Zachary M. Geballe , Viktor V. Struzhkin , Andrew Townley , Raymond Jeanloz

We describe a heat capacity measurement system for the study of the field-orientation dependence for temperatures down to 50 mK. A "Vector Magnet" combined with a mechanical rotator for the dewar enables the rotation of the magnetic field…

Superconductivity · Physics 2009-11-10 Kazuhiko Deguchi , Takehiko Ishiguro , Yoshiteru Maeno

The lack of coherent room-temperature sources in the whole terahertz spectral window (0.3-10 THz) has significantly hampered the growth of scientific and technological applications in this range. Among them, high-precision frequency…

The measurement of extremely small displacements is of utmost importance, both for fundamental studies [1-4], and practical applications [5-7]. One way to estimate a small displacement is to measure the Doppler shift generated in light…

Instrumentation and Detectors · Physics 2019-01-30 Bethany J. Little , Julián Martínez-Rincón , Umberto Bortolozzo , Stefania Residori , John C. Howell

Torsional harmonic cantilevers allow measurement of time varying tip-sample forces in tapping-mode atomic force microscopy. Accuracy of these force measurements is important for quantitative nanomechanical measurements. Here we demonstrate…

Instrumentation and Detectors · Physics 2008-11-26 Ozgur Sahin

The temperature of the semiconductor diode increases under strong light illumination whether thermoelectric cooler is installed or not, which changes the output wavelength of the laser (Lee M. S. et al., 2017). However, other…

Quantum Physics · Physics 2018-03-22 Yang-Yang Fei , Xiang-Dong Meng , Ming Gao , Yi Yang , Hong Wang , Zhi Ma

Recent developments of the pump-probe thermoreflectance methods (such as the beam-offset and elliptical-beam approaches of the time-domain and frequency-domain thermoreflectance techniques) enabled measurements of the thermal conductivities…

Applied Physics · Physics 2020-09-02 Puqing Jiang , Heng Ban

A recent advance in improving the spatial resolution of magnetic force microscopy (MFM) uses as sensor tips carbon nanotubes grown at the apex of conventional silicon cantilever pyramids and coated with a thin ferromagnetic layer. Magnetic…

Mesoscale and Nanoscale Physics · Physics 2009-11-13 John R. Kirtley , Zhifeng Deng , Lan Luan , Erhan Yenilmez , Hongjie Dai , Kathryn A. Moler

High-reflectivity fused silica mirrors are at the epicentre of current advanced gravitational wave detectors. In these detectors, the mirrors interact with high power laser beams. As a result of finite absorption in the high reflectivity…

The variation of the resonance frequency and intrinsic quality factor of superconducting radio-frequency cavities during the transition from the superconducting to the normal-conducting state provides essential insight into the fundamental…

We describe an experiment in which cold rubidium atoms, confined in an elongated magnetic trap, are excited by transverse oscillation of the trap centre. The temperature after excitation exhibits resonance as a function of the driving…

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