Phase-Coherent Dynamics of Quantum Devices With Local Interactions

• URL: http://arxiv.org/abs/2004.07260v2
• Date: Mon, 31 Aug 2020 12:44:04 GMT
• Title: Phase-Coherent Dynamics of Quantum Devices With Local Interactions
• Authors: Michele Filippone, Arthur Marguerite, Karyn Le Hur, Gwendal F\`eve and Christophe Mora
• Abstract summary: Local Fermi Liquid (LFL) theories describe the strongly correlated and coherent low-energy dynamics of quantum dot devices. We show how inelastic effects become crucial, requiring approaches beyond LFLs, shedding new light on past experimental data.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: This review illustrates how Local Fermi Liquid (LFL) theories describe the strongly correlated and coherent low-energy dynamics of quantum dot devices. This approach consists in an effective elastic scattering theory, accounting exactly for strong correlations. Here, we focus on the mesoscopic capacitor and recent experiments achieving Coulomb-induced quantum state transfer. Extending to out-of-equilibrium regimes, aiming at triggered single electron emission, we illustrate how inelastic effects become crucial, requiring approaches beyond LFLs, shedding new light on past experimental data, by showing clear interaction effects in the dynamics of mesoscopic capacitors.

Related papers

• Theory of fractional quantum Hall liquids coupled to quantum light and emergent graviton-polaritons [0.0]
  We study the dynamics of a $nu=1/3$ Laughlin state in a single-mode cavity with finite electric field gradients. We find that the topological signatures of the FQH state remain robust against the non-local modulated cavity vacuum fluctuations. By exploring the low-energy excited spectrum inside the FQH phase, we identify a new neutral quasiparticle, the graviton-polariton.
  arXiv  Detail & Related papers  (2024-05-20T18:00:36Z)
• Examining the quantum signatures of optimal excitation energy transfer [0.0]
  We study the influence of coherence, entanglement, and cooperative dissipation on the transport and capture of excitation energy. We show that the rate of energy extraction is optimized under conditions that minimize the quantum coherence and entanglement of the system.
  arXiv  Detail & Related papers  (2024-02-29T19:00:02Z)
• Quantum Effects on the Synchronization Dynamics of the Kuramoto Model [62.997667081978825]
  We show that quantum fluctuations hinder the emergence of synchronization, albeit not entirely suppressing it. We derive an analytical expression for the critical coupling, highlighting its dependence on the model parameters.
  arXiv  Detail & Related papers  (2023-06-16T16:41:16Z)
• Neural-network quantum states for ultra-cold Fermi gases [49.725105678823915]
  This work introduces a novel Pfaffian-Jastrow neural-network quantum state that includes backflow transformation based on message-passing architecture. We observe the emergence of strong pairing correlations through the opposite-spin pair distribution functions. Our findings suggest that neural-network quantum states provide a promising strategy for studying ultra-cold Fermi gases.
  arXiv  Detail & Related papers  (2023-05-15T17:46:09Z)
• Higher-order mean-field theory of chiral waveguide QED [0.0]
  Waveguide QED with cold atoms provides a potent platform for the study of non-equilibrium, many-body, and open-system quantum dynamics. We apply an improved mean-field theory based on higher-order cumulant expansions to describe the experimentally relevant, but theoretically elusive, regime of weak coupling. Our approach allows to quantify the trade-off between anti-bunching and output power in previously inaccessible parameter regimes.
  arXiv  Detail & Related papers  (2022-07-21T12:22:41Z)
• Nonperturbative Waveguide Quantum Electrodynamics [0.0]
  We study in and out of equilibrium properties of waveguide quantum electrodynamics. We uncover several surprising features ranging from symmetry-protected many-body bound states in the continuum to strong renormalization of the effective mass. Results are relevant to experiments in superconducting qubits interacting with microwave resonators or coupled atoms to photonic crystals.
  arXiv  Detail & Related papers  (2021-05-18T21:15:57Z)
• Quantum simulating the electron transport in quantum cascade laser structures [0.0]
  We show the existence of optimal relationships between the model parameters, maximizing the particle current, the population inversion (or their product) and the stimulated emission rate. This substantiates the concept of emulating the QCL operation mechanisms in cold-atom optical lattice simulators.
  arXiv  Detail & Related papers  (2021-04-26T19:40:07Z)
• Waveguide quantum electrodynamics: collective radiance and photon-photon correlations [151.77380156599398]
  Quantum electrodynamics deals with the interaction of photons propagating in a waveguide with localized quantum emitters. We focus on guided photons and ordered arrays, leading to super- and sub-radiant states, bound photon states and quantum correlations with promising quantum information applications.
  arXiv  Detail & Related papers  (2021-03-11T17:49:52Z)
• Probing eigenstate thermalization in quantum simulators via fluctuation-dissipation relations [77.34726150561087]
  The eigenstate thermalization hypothesis (ETH) offers a universal mechanism for the approach to equilibrium of closed quantum many-body systems. Here, we propose a theory-independent route to probe the full ETH in quantum simulators by observing the emergence of fluctuation-dissipation relations. Our work presents a theory-independent way to characterize thermalization in quantum simulators and paves the way to quantum simulate condensed matter pump-probe experiments.
  arXiv  Detail & Related papers  (2020-07-20T18:00:02Z)
• Theory of waveguide-QED with moving emitters [68.8204255655161]
  We study a system composed by a waveguide and a moving quantum emitter in the single excitation subspace. We first characterize single-photon scattering off a single moving quantum emitter, showing both nonreciprocal transmission and recoil-induced reduction of the quantum emitter motional energy.
  arXiv  Detail & Related papers  (2020-03-20T12:14:10Z)
• Theoretical methods for ultrastrong light-matter interactions [91.3755431537592]
  This article reviews theoretical methods developed to understand cavity quantum electrodynamics in the ultrastrong-coupling regime. The article gives a broad overview of the recent progress, ranging from analytical estimate of ground-state properties to proper computation of master equations. Most of the article is devoted to effective models, relevant for the various experimental platforms in which the ultrastrong coupling has been reached.
  arXiv  Detail & Related papers  (2020-01-23T18:09:10Z)

This list is automatically generated from the titles and abstracts of the papers in this site.

This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.