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Microrefrigerators based on normal metal-insulator-superconductor (NIS) junctions represent a very attractive alternative to cool the microbolometers and calorimeters for astrophysical observations in space-borne experiments. The…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 D. V. Anghel , J. P. Pekola

We study a system consisting of a particle adsorbed on a carbon nanotube resonator. The particle is allowed to diffuse along the resonator, in order to enable study of e.g. room temperature mass sensing devices. The system is initialized in…

Mesoscale and Nanoscale Physics · Physics 2014-10-17 Christin Edblom , Andreas Isacsson

Gravitational wave detectors from the advanced generation onwards are expected to be limited in sensitivity by thermal noise of the optics, making the reduction of this noise a key factor in the success of such detectors. A proposed method…

Instrumentation and Methods for Astrophysics · Physics 2015-06-03 Paul Fulda , Charlotte Bond , Daniel Brown , Frank Brückner , Ludovico Carbone , Simon Chelkowski , Stefan Hild , Keiko Kokeyama , Mengyao Wang , Andreas Freise

We demonstrate that a near-dissociation photoassociation resonance can be used to create a deeply bound molecular sample of ultracold NaCs. To probe the resulting vibrational distribution of the sample, we use a new technique that can be…

The thermal noise is expected to be one of the main limiting factors on the sensitivity of interferometric gravitational-wave detectors like LIGO and VIRGO. Thermal fluctuations of internal modes of the interferometer's test masses and of…

Instrumentation and Detectors · Physics 2007-05-23 Constantin Brif

High-performance room-temperature sensing is often limited by non-stationary $1/f$ fluctuations and non-Gaussian stochasticity. In spintronic devices, thermally activated N\'eel switching creates heavy-tailed noise that masks weak signals,…

Reflection measurements give access to the complex impedance of a material on a wide frequency range. This is of interest to study the dynamical properties of various materials, for instance disordered superconductors. However reflection…

Instrumentation and Detectors · Physics 2015-06-17 P. Diener , F. Couëdo , C. Marrache-Kikuchi , M. Aprili , J. Gabelli

Mechanical resonators based on low-dimensional materials provide a unique platform for exploring a broad range of physical phenomena. The mechanical vibrational states are indeed extremely sensitive to charges, spins, photons, and adsorbed…

Mesoscale and Nanoscale Physics · Physics 2017-04-05 I. Tsioutsios , A. Tavernarakis , J. Osmond , P. Verlot , A. Bachtold

Equilibrium probes have been widely used in various noisy quantum metrology schemes. However, such an equilibrium-probe-based metrology scenario severely suffers from the low-temperature-error divergence problem in the weak-coupling regime.…

Quantum Physics · Physics 2025-05-28 Ze-Zhou Zhang , Hong-Gang Luo , Wei Wu

We present the full implementation of a room-temperature gravitational wave bar detector equipped with an opto-mechanical readout. The mechanical vibrations are read by a Fabry--Perot interferometer whose length changes are compared with a…

General Relativity and Quantum Cosmology · Physics 2009-11-07 L. Conti , M. De Rosa , F. Marin , L. Taffarello , M. Cerdonio

Using low-cost piezoelectric sensors to sense structural vibration exhibits great potential in augmenting structural engineering, which is yet to be explored in the literature to the best of our knowledge. Examples of such unexplored…

Signal Processing · Electrical Eng. & Systems 2020-12-09 Masfiqur Rahaman , MD. Nazmul Hasan Sakib , Nafisa Islam , Saiful Islam Salim , Uday Kamal , Raihan Rasheed , A. B. M. Alim Al Islam

We study microwave-driven cooling in a superconducting flux qubit subjected to environment noises. For the weak decoherence, our analytical results agree well with the experimental observations near the degeneracy point and show that the…

Quantum Physics · Physics 2013-06-04 Lingjie Du , Yang Yu

This paper investigates the performance of the thermal wave radar imaging technique in low-power vibrothermography, so-called vibro-thermal wave radar (VTWR), for non-destructive inspection of composites. VTWR is applied by binary phase…

Applied Physics · Physics 2021-05-11 Saeid Hedayatrasa , Joost Segers , Gaétan Poelman , Wim Van Paepegem , Mathias Kersemans

We analyze the dissipation of the frequency vibrations of nano-mechanical devices. We show that the coupling between flexural modes and two-level systems leads to sub-ohmic dissipation. The inverse quality factor of the low energy…

Mesoscale and Nanoscale Physics · Physics 2007-06-13 C. Seoanez , F. Guinea , A. H. Castro Neto

We present the calculation of thermal noise in interferometric gravitational-wave detectors due to the thermal fluctuations of the beam splitter (BS). This work makes use of a recently developed method of the analysis of thermal noise in…

Instrumentation and Methods for Astrophysics · Physics 2018-10-31 Johannes Dickmann , Stefanie Kroker , Yuri Levin , Ronny Nawrodt , Sergey Vyatchanin

The detection of mechanical vibrations near the quantum limit is a formidable challenge since the displacement becomes vanishingly small when the number of phonon quanta tends towards zero. An interesting setup for on-chip nanomechanical…

Thermoacoustic Refrigerators use acoustic power for generating cold temperatures. Development of refrigerators based on the thermoacoustic technology is a novel solution to the present day need of cooling, without causing environmental…

Instrumentation and Detectors · Physics 2016-10-04 Ram C. Dhuley

Achieving the demanding sensitivity and bandwidth, envisaged for third generation gravitational wave (GW) observatories, is extremely challenging with a single broadband interferometer. Very high optical powers (Megawatts) are required to…

General Relativity and Quantum Cosmology · Physics 2010-01-06 Stefan Hild , Simon Chelkowski , Andreas Freise , Janyce Franc , Nazario Morgado , Raffaele Flaminio , Riccardo DeSalvo

The scalability of most transition-edge sensor arrays is limited by the multiplexing technology which combines their signals over a reduced number of wires and amplifiers. In this Letter, we present and demonstrate a multiplexer design…

The development of methods to safely rewarm large volume cryopreserved biological samples remains a barrier to the widespread adoption of cryopreservation. Here, experiments and simulations were performed to demonstrate that ultrasound can…

Medical Physics · Physics 2023-02-08 Rui Xu , Bradley E. Treeby , Eleanor Martin