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The physical processes affecting the thermalization of cosmic microwave background spectral distortions are very simple and well understood. This allows us to make precise predictions for the distortions signals caused by various energy…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-18 Jens Chluba

We propose to realize microwave quantum illumination in weak coupling regime based on multimode optomechanical systems. In our proposal the multimode together with a frequency-mismatch process could reduce mechanical thermal noise.…

Quantum Physics · Physics 2017-01-24 Wen-Juan Yang , Xiang-Bin Wang

Optical resonators have shown outstanding abilities to tailor chemical landscapes through enhanced light-matter interaction between confined optical modes and molecule vibrations. We propose a theoretical model to study cooperative…

Optics · Physics 2024-12-11 Mingxuan Xiao , Wei Wang , Wenjing Liu , Zheng Li , Shui-Jing Tang , Yun-Feng Xiao

The influence of molecular vibrations on dissociative adsorption is studied by six-dimensional quantum dynamical calculations. For the system H_2 at Pd(100), which possesses non-activated pathways, it is shown that large vibrational effects…

mtrl-th · Physics 2009-10-30 Axel Gross , Matthias Scheffler

Coupling dark matter to light new particles is an attractive way to combine thermal production with strong velocity-dependent self-interactions. Here we point out that in such models the dark matter annihilation rate is generically enhanced…

High Energy Physics - Phenomenology · Physics 2017-04-12 Torsten Bringmann , Felix Kahlhoefer , Kai Schmidt-Hoberg , Parampreet Walia

The generation and control of entanglement in a quantum mechanical system is a critical element of nearly all quantum applications. Molecular systems are a promising candidate, with numerous degrees of freedom able to be targeted. However,…

Quantum Physics · Physics 2023-07-28 Davis M. Welakuh , Spyros Tserkis , Scott E. Smart , Prineha Narang

We investigate the nonequilibrium population of a vibrational mode in the steady state of a biased molecular junction, using a rate equation approach. We focus on the limit of weak electronic-vibrational coupling and show that, in the…

Mesoscale and Nanoscale Physics · Physics 2015-06-24 Rainer Härtle , Manas Kulkarni

Mollow spectroscopy is a photon statistics spectroscopy, obtained by scanning the quantum light scattered from a source system. Here, we apply this technique to detect the weak light-matter interaction between the cavity and atom (or a…

Quantum Physics · Physics 2018-04-16 Qian Bin , Xin-You Lü , Li-Li Zheng , Shang-Wu Bin , Ying Wu

Ultracold atoms are an ideal platform for understanding system-reservoir dynamics of many-body systems. Here, we study quantum back-action in atomic Bose-Einstein condensates, weakly interacting with a far-from resonant, i.e., dispersively…

Quantum Gases · Physics 2023-06-28 Emine Altuntas , Ian B. Spielman

The high energy continuum in Seyfert galaxies and galactic black hole candidates is likely to be produced by a thermal plasma. There are difficulties in understanding what can keep the plasma thermal, especially during fast variations of…

Astrophysics · Physics 2009-10-30 G. Ghisellini , F. Haardt , R. Svensson

The creation of temperature variations in magnetization, and hence in the frequencies of the magnon spectrum in laser-heated regions of magnetic films, is an important method for studying Bose-Einstein condensation of magnons, magnon…

Bose condensation of quasiparticles in physical systems of finite size iz considered for the case of ferromagnetic thin films. It is shown that in accordance with present-day experimental capabilities which permit one to achieve densities…

Statistical Mechanics · Physics 2007-05-23 A. I. Bugrij , V. M. Loktev

We consider an ultracold quantum degenerate gas in an optical lattice inside a cavity. This system represents a simple but key model for "quantum optics with quantum gases," where a quantum description of both light and atomic motion is…

Quantum Physics · Physics 2010-02-26 Igor B. Mekhov , Helmut Ritsch

Several puzzling regularities concerning the low temperature excitations of glasses are quantitatively explained by quantizing domain wall motions of the random first order glass transition theory. The density of excitations agrees with…

Disordered Systems and Neural Networks · Physics 2009-11-07 Vassiliy Lubchenko , Peter G. Wolynes

We present a comprehensive characterization of cold molecular beams from a cryogenic buffer-gas cell, providing an insight into the physics of buffer-gas cooling. Cold molecular beams are extracted from a cryogenic cell by electrostatic…

Chemical Physics · Physics 2018-12-04 X. Wu , T. Gantner , M. Zeppenfeld , S. Chervenkov , G. Rempe

Detecting electronic hot spots is important for understanding the heat dissipation and thermal management of electronic and semiconductor devices. Optical thermoreflective imaging is being used to perform precise temporal and spatial…

Modeling and investigating the thermalization of microscopic objects with arbitrary shape from first principles is of fundamental interest and may lead to technical applications. Here, we study, over a large temperature range, the…

Quantum Physics · Physics 2013-07-19 C. Wuttke , A. Rauschenbeutel

For equilibrium systems, the magnitude of thermal fluctuations is closely linked to the dissipative response to external perturbations. This fluctuation-dissipation relation has been described for material particles in a wide range of…

Quantum Gases · Physics 2023-01-24 Fahri Emre Öztürk , Frank Vewinger , Martin Weitz , Julian Schmitt

The dynamics of matter waves in the atomic to molecular condensate transition with a time-modulated atomic scattering length is investigated. Both the cases of rapid and slow modulations are studied. In the case of rapid modulations, the…

Quantum Gases · Physics 2021-08-27 F Kh Abdullaev , M Ogren , J S Yuldashev

Bose-Einstein condensation, an effect long known for material particles as cold atomic gases, has in recent years also been observed for photons in microscopic optical cavitites. Here, we report absorption and emission spectroscopic…

Atomic Physics · Physics 2021-03-10 Christian Wahl , Marvin Hoffmann , Thilo vom Hoevel , Frank Vewinger , Martin Weitz
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