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We study the subgap transport properties of a small capacitance normal metal-superconductor tunnel junction coupled to an external electromagnetic environment. Mesoscopic interference between the electrons in the normal metal strongly…

介观与纳米尺度物理 · 物理学 2009-10-30 Andrea Huck , F. W. J. Hekking , Bernhard Kramer

The realization of excitonic insulators in transition metal dichalcogenide systems has opened the door to explorations of the exotic properties such a state exhibits. We study theoretically the potential for excitonic insulators to show an…

介观与纳米尺度物理 · 物理学 2024-10-30 Andrew A. Allocca , Nigel R. Cooper

Quantum fluctuations of Coulomb blockade are investigated as a function of the coupling to reservoirs in semiconductor quantum dots. We use fluctuations in the distance between peaks $\Delta N$ apart to characterize both the amplitude and…

介观与纳米尺度物理 · 物理学 2012-08-27 S. M. Maurer , S. R. Patel , C. M. Marcus , C. I. Duruoz , J. S. Harris,

We investigate the emergence of long-range electron hopping mediated by cavity vacuum fields in disordered quantum Hall systems. We show that the counter-rotating (anti-resonant) light-matter interaction produces an effective hopping…

介观与纳米尺度物理 · 物理学 2021-10-29 Cristiano Ciuti

We investigate evolution of the quantum coherence in the ultracold mixture of fermionic atoms and bosonic dimer molecules. Interactions are there experimentally controlled via tuning the external magnetic field. Consequently, the fermionic…

超导电性 · 物理学 2015-06-25 T. Domanski

Light-matter coupling involving classical and quantum light offers a wide range of possibilities to tune the electronic properties of correlated quantum materials. Two paradigmatic results are the dynamical localization of electrons and the…

强关联电子 · 物理学 2020-07-14 Michael A. Sentef , Jiajun Li , Fabian Künzel , Martin Eckstein

Intertwined orders exist ubiquitously in strongly correlated electronic systems and lead to intriguing phenomena in quantum materials. In this paper, we explore the unique opportunity of manipulating intertwined orders through entangling…

强关联电子 · 物理学 2020-11-24 Jiajun Li , Martin Eckstein

The ability to isolate a quantum system from its environment is of fundamental interest and importance in optical quantum science and technology. Here we propose an experimentally feasible scheme for beating environment-induced dissipation…

量子物理 · 物理学 2024-07-15 Yi-Ming Xia , Yi-Fei Wang , Xiao-Yun Zhang , Hai-Chao Li , Wei Xiong

When the light interacts with matters in a lossy cavity, in the standard cavity quantum electrodynamics, the dissipation of cavity fields is characterized simply by the strengths of the two couplings: the light-matter interaction and the…

量子物理 · 物理学 2014-02-17 Motoaki Bamba , Tetsuo Ogawa

Effect of a complicated many-body environment is analyzed on the chaotic motion of a quantum particle in a mesoscopic ballistic structure. The dephasing and absorption phenomena are treated on the same footing in the framework of a model…

介观与纳米尺度物理 · 物理学 2007-05-23 Valentin V. Sokolov

In the present work we use the Li\'enard-Wiechert potential to show that very violent fluctuations are experienced by an electromagnetic charged extended particle when it is perturbed from its rest state. The feedback interaction of…

量子物理 · 物理学 2020-06-15 Álvaro G. López

We consider a quantum point contact between two Luttinger liquids coupled to a mechanical system (oscillator). For non-vanishing bias, we find an effective oscillator temperature that depends on the Luttinger parameter. A generalized…

强关联电子 · 物理学 2009-11-07 M. B. Hastings , I. Martin , D. Mozyrsky

We present the experimental realization of spatial quantum correlations of photons that are induced by multiple scattering of squeezed light. The quantum correlation relates photons propagating along two different light trajectories through…

量子物理 · 物理学 2009-05-14 Stephan Smolka , Alexander Huck , Ulrik L. Andersen , Ad Lagendijk , Peter Lodahl

Quantum cooperativity is evident in light-matter platforms where quantum emitter ensembles are interfaced with confined optical modes and are coupled via the ubiquitous electromagnetic quantum vacuum. Cooperative effects can find…

量子物理 · 物理学 2023-08-07 Michael Reitz , Christian Sommer , Claudiu Genes

Exotic quantum vacuum phenomena are predicted in cavity quantum electrodynamics (QED) systems with ultrastrong light-matter interactions. Their ground states are predicted to be vacuum squeezed states with suppressed quantum fluctuations.…

Engineering quantum phases using light is a novel route to designing functional materials, where light-induced superconductivity is a successful example. Although this phenomenon has been realized experimentally, especially for the…

超导电性 · 物理学 2021-11-23 Yao Wang , Tao Shi , Cheng-Chien Chen

We experimentally study the influence of dissipation on the driven Dicke quantum phase transition, realized by coupling external degrees of freedom of a Bose-Einstein condensate to the light field of a high-finesse optical cavity. The…

Usually one finds that dissipation tends to make a quantum system more classical in nature. In this paper we study the effect of momentum dissipation on a quantum system. The momentum of the particle is coupled bilinearly to the momenta of…

统计力学 · 物理学 2007-05-23 Joachim Ankerhold , Eli Pollak

Although energy level repulsion is typically observed in interacting quantum systems, non-Hermitian physics predicts the effect of level attraction, which occurs when significant energy dissipation is present. Here, we show a manifestation…

介观与纳米尺度物理 · 物理学 2024-09-20 Dąbrówka Biegańska , Maciej Pieczarka , Christian Schneider , Sven Höfling , Sebastian Klembt , Marcin Syperek

We suggest that an interplay between microscopic and macroscopic physics can give rise to dark matter (DM) whose interactions with the visible sector fundamentally undulate in time, independent of celestial dynamics. A concrete example is…

高能物理 - 唯象学 · 物理学 2020-12-30 Joe Davighi , Matthew McCullough , Joseph Tooby-Smith