Open quantum dynamics of Josephson charge pumps

• URL: http://arxiv.org/abs/2501.14365v1
• Date: Fri, 24 Jan 2025 09:57:55 GMT
• Title: Open quantum dynamics of Josephson charge pumps
• Authors: Ankit Kumar, Luis Cort, Marcin Łobejko, Alejandro Jenkins, Michał Horodecki,
• Abstract summary: We investigate the macroscopic dynamics of Josephson charge pumps in the light of Alicki et al.'s theoretical description of the Josephson junction as an open quantum system. If the Coulomb interaction between the terminals is taken into account, we find that the resulting description of pumping is physically reasonable and in good qualitative agreement with experimental observations.
• Score: 41.08740180495404
• License:
• Abstract: We investigate the macroscopic dynamics of Josephson charge pumps in the light of Alicki et al.'s theoretical description of the Josephson junction as an open quantum system described by a Markovian master equation. If the Coulomb interaction between the terminals is taken into account, we find that the resulting description of pumping is physically reasonable and in good qualitative agreement with experimental observations. We comment on how this approach relates to other theoretical treatments of quantum pumps based on time-dependent potentials or scattering amplitudes. We also highlight the significance of our results in the broader context of the dynamics of charge pumping by active systems.

Related papers

• Highly Squeezed States in Ring Resonators: Beyond the Undepleted Pump Approximation [4.669407531195486]
  We present a multimode theory of squeezed state generation in resonant systems valid for arbitrary pump power and including pump depletion. We consider the lossy generation of a highly squeezed state by an effective second-order interaction in a silicon nitride ring resonator point-coupled to a waveguide.
  arXiv  Detail & Related papers  (2024-04-23T23:24:39Z)
• Stabilization of Hubbard-Thouless pumps through nonlocal fermionic repulsion [0.0]
  Thouless pumping represents a powerful concept to probe quantized topological invariants in quantum systems. We show that sufficiently large intersite interactions allow for an interaction-induced recovery of Thouless pumps. Our results provide a new mechanism to stabilize Thouless pumps in interacting quantum systems.
  arXiv  Detail & Related papers  (2023-08-25T13:34:42Z)
• Thermodynamics of adiabatic quantum pumping in quantum dots [50.24983453990065]
  We consider adiabatic quantum pumping through a resonant level model, a single-level quantum dot connected to two fermionic leads. We develop a self-contained thermodynamic description of this model accounting for the variation of the energy level of the dot and the tunnelling rates with the thermal baths.
  arXiv  Detail & Related papers  (2023-06-14T16:29:18Z)
• Effect of quantum jumps on non-Hermitian system [0.11764175310344632]
  We first derive an effective Hamiltonian to describe the dynamics of the open quantum system based on the master equation. We then expand the eigenstates and eigenenergies up to the first and second order in the quantum jumps. The effect of quantum jump on the dynamics and the nonequilibrium phase transition is demonstrated and discussed.
  arXiv  Detail & Related papers  (2022-02-25T10:09:57Z)
• Self-oscillating pump in a topological dissipative atom-cavity system [55.41644538483948]
  We report on an emergent mechanism for pumping in a quantum gas coupled to an optical resonator. Due to dissipation, the cavity field evolves between its two quadratures, each corresponding to a different centrosymmetric crystal configuration. This self-oscillation results in a time-periodic potential analogous to that describing the transport of electrons in topological tight-binding models.
  arXiv  Detail & Related papers  (2021-12-21T19:57:30Z)
• Hydrodynamic interpretation of generic squeezed coherent states: A kinetic theory [0.0]
  We define a quantum pressure, a quantum temperature and a quantum internal energy which are related to each other in the same fashion as in the classical kinetic theory. In the end, we show that the kinetic internal energy is linked to the fractional transformer part of the underlying classical dynamics.
  arXiv  Detail & Related papers  (2021-10-03T21:15:51Z)
• Topological power pumping in quantum circuits [0.0]
  We discuss the cases of quantum Hall pumps, Thouless pumps, and the more recent Floquet pumps based frequency converters. We propose a realization of such a topological coupler based on a superconducting qutrit suitably driven by three modulated drives.
  arXiv  Detail & Related papers  (2021-09-27T09:31:55Z)
• From geometry to coherent dissipative dynamics in quantum mechanics [68.8204255655161]
  We work out the case of finite-level systems, for which it is shown by means of the corresponding contact master equation. We describe quantum decays in a 2-level system as coherent and continuous processes.
  arXiv  Detail & Related papers  (2021-07-29T18:27:38Z)
• Bloch-Landau-Zener dynamics induced by a synthetic field in a photonic quantum walk [52.77024349608834]
  We realize a photonic quantum walk in the presence of a synthetic gauge field. We investigate intriguing system dynamics characterized by the interplay between Bloch oscillations and Landau-Zener transitions.
  arXiv  Detail & Related papers  (2020-11-11T16:35:41Z)
• Quantum interactions with pulses of radiation [77.34726150561087]
  This article presents a general master equation formalism for the interaction between travelling pulses of quantum radiation and localized quantum systems. We develop a complete input-output theory to describe the driving of quantum systems by arbitrary incident pulses of radiation and the quantum state of the field emitted into any desired outgoing temporal mode.
  arXiv  Detail & Related papers  (2020-03-10T08:35:18Z)

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.