An exactly solvable model of calorimetric measurements
- URL: http://arxiv.org/abs/2007.15923v2
- Date: Fri, 13 Nov 2020 10:47:43 GMT
- Title: An exactly solvable model of calorimetric measurements
- Authors: Brecht Donvil, Dmitry Golubev and Paolo Muratore-Ginanneschi
- Abstract summary: We consider a transient process in which the level and the reservoir is initially switched on and then switched off again.
We find the time dependence of the energy of the reservoir, of the energy of the level and of the interaction energy between them at weak, intermediate, strong and ultra-strong coupling.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: Calorimetric measurements are experimentally realizable methods to assess
thermodynamics relations in quantum devices. With this motivation in mind, we
consider a resonant level coupled to a Fermion reservoir. We consider a
transient process, in which the interaction between the level and the reservoir
is initially switched on and then switched off again. We find the time
dependence of the energy of the reservoir, of the energy of the level and of
the interaction energy between them at weak, intermediate, strong and
ultra-strong coupling. We also determine the statistical distributions of these
energies.
Related papers
- Quantum thermodynamics of the Caldeira-Leggett model with non-equilibrium Gaussian reservoirs [0.0]
We introduce a non-equilibrium version of the Caldeira-Leggett model in which a quantum particle is strongly coupled to a set of engineered reservoirs.
Strongly displaced/squeezed reservoirs can be used to generate an effective time dependence in the system Hamiltonian.
We show the quantum-classical correspondence between the heat statistics in the non-equilibrium Caldeira-Leggett model and the statistics of a classical Langevin particle under the action of squeezed and displaced colored noises.
arXiv Detail & Related papers (2024-04-30T21:41:34Z) - Demonstration of energy extraction gain from non-classical correlations [62.615368802619116]
We show that entanglement governs the amount of extractable energy in a controllable setting.
By quantifying both the concurrence of the two-qubit resource state and the energy extraction gain from applying the feedback policy, we corroborate the connection between information and energy.
arXiv Detail & Related papers (2024-04-23T08:44:07Z) - Amplification of quantum transfer and quantum ratchet [56.47577824219207]
We study a model of amplification of quantum transfer and making it directed which we call the quantum ratchet model.
The ratchet effect is achieved in the quantum control model with dissipation and sink, where the Hamiltonian depends on vibrations in the energy difference synchronized with transitions between energy levels.
Amplitude and frequency of the oscillating vibron together with the dephasing rate are the parameters of the quantum ratchet which determine its efficiency.
arXiv Detail & Related papers (2023-12-31T14:04:43Z) - Nonlocal thermoelectric detection of interaction and correlations in
edge states [62.997667081978825]
We propose the nonlocal thermoelectric response as a direct indicator of the presence of interactions, nonthermal states and the effect of correlations.
A setup with two controllable quantum point contacts allows thermoelectricity to monitor the interacting system thermalisation.
arXiv Detail & Related papers (2023-07-18T16:28:59Z) - 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) - Photoinduced prethermal order parameter dynamics in the two-dimensional
large-$N$ Hubbard-Heisenberg model [77.34726150561087]
We study the microscopic dynamics of competing ordered phases in a two-dimensional correlated electron model.
We simulate the light-induced transition between two competing phases.
arXiv Detail & Related papers (2022-05-13T13:13:31Z) - Coherence dynamics in low-energy nuclear fusion [0.0]
Low-energy nuclear fusion reactions have been described using a dynamical coupled-channels density matrix method.
For the first time, this has been combined with an energy projection method, permitting the calculation of energy resolved fusion probabilities.
arXiv Detail & Related papers (2022-01-06T20:18:45Z) - Experimental verification of fluctuation relations with a quantum
computer [68.8204255655161]
We use a quantum processor to experimentally validate a number of theoretical results in non-equilibrium quantum thermodynamics.
Our experiments constitute the experimental basis for the understanding of the non-equilibrium energetics of quantum computation.
arXiv Detail & Related papers (2021-06-08T14:16:12Z) - Nonequilibrium fluctuations of a quantum heat engine [0.0]
We experimentally investigate the efficiency and nonequilibrium entropy production statistics of a spin-1/2 quantum Otto cycle.
Our results characterize the statistical features of a small-scale thermal machine in the quantum domain.
arXiv Detail & Related papers (2021-04-27T18:53:53Z) - From non-equilibrium Green's functions to quantum master equations for
the density matrix and out-of-time-order correlators: steady state and
adiabatic dynamics [0.0]
We consider a finite quantum system under slow driving and weakly coupled to thermal reservoirs at different temperatures.
We formulate the equations ruling the dynamics of these quantities by recourse to the Schwinger-Keldysh non-equilibrium Green's function formalism.
We illustrate the formalism in the case of a qutrit coupled to bosonic reservoirs and of a pair of interacting quantum dots attached to fermionic reservoirs.
arXiv Detail & Related papers (2021-03-07T15:15:22Z) - Direct estimation of the energy gap between the ground state and excited
state with quantum annealing [0.0]
We propose a direct estimation of the energy gap between the ground state and excited state of the target Hamiltonian.
Based on typical parameters of superconducting qubits, we numerically investigate the performance of our scheme.
Our results pave a new way to estimate the energy gap of the Hamiltonian for quantum chemistry.
arXiv Detail & Related papers (2020-07-21T02:03:42Z)
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.