Switching the function of the quantum Otto cycle in non-Markovian
dynamics: heat engine, heater and heat pump
- URL: http://arxiv.org/abs/2211.09336v1
- Date: Thu, 17 Nov 2022 04:53:15 GMT
- Title: Switching the function of the quantum Otto cycle in non-Markovian
dynamics: heat engine, heater and heat pump
- Authors: Miku Ishizaki, Naomichi Hatano, Hiroyasu Tajima
- Abstract summary: We show that the interaction energy between a macroscopic heat bath and a microscopic qubit is not negligible.
A non-Markovian quantum Otto cycle can switch functions such as an engine as well as a heater or a heat pump by controlling the interaction time with the heat bath.
This property has a possibility of being utilized for cooling the qubits in quantum computing.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: Quantum thermodynamics explores novel thermodynamic phenomena that emerge
when interactions between macroscopic systems and microscopic quantum ones go
into action. Among various issues, quantum heat engines, in particular, have
attracted much attention as a critical step in theoretical formulation of
quantum thermodynamics and investigation of efficient use of heat by means of
quantum resources. In the present paper, we focus on heat absorption and
emission processes as well as work extraction processes of a quantum Otto
cycle. We describe the former as non-Markovian dynamics, and thereby find that
the interaction energy between a macroscopic heat bath and a microscopic qubit
is not negligible. Specifically, we reveal that the interaction energy is
divided into the system and the bath in a region of the short interaction time
and remains negative in the region of the long interaction time. In addition, a
counterintuitive energy flow from the system and the interaction energy to the
hot bath occurs in another region of the short interaction time. We quantify
these effects by defining an index of non-Markovianity in terms of the
interaction energy. With this behavior of the interaction energy, we show that
a non-Markovian quantum Otto cycle can switch functions such as an engine as
well as a heater or a heat pump by controlling the interaction time with the
heat bath. In particular, the qubit itself loses its energy if we shorten the
interaction time, and in this sense, the qubit is cooled through the cycle.
This property has a possibility of being utilized for cooling the qubits in
quantum computing. We also describe the work extraction from the microscopic
system to a macroscopic system like us humans as an indirect measurement
process by introducing a work storage as a new reservoir.
Related papers
- An exactly solvable relativistic quantum Otto engine [0.0]
We study the effects of motion on the amount of work that can be extracted from the machine when the working medium is moving at a constant relativistic velocity through the heat baths.
A non-monotonic dependence between speed and extracted work exists raising the intriguing possibility of exploiting relativistic effects for the enhancement of thermodynamic processes in tabletop experiments.
arXiv Detail & Related papers (2023-12-11T15:36:11Z) - Quantum many-body thermal machines enabled by atom-atom correlations [0.0]
We study a class of quantum many-body thermal machines whose operation is directly enabled by second-order atom-atom correlations in an ultracold atomic gas.
We show that operating these thermal machines in the intended regimes, such as a heat engine, refrigerator, thermal accelerator, or heater, would be impossible without such atom-atom correlations.
arXiv Detail & Related papers (2023-08-10T00:35:47Z) - 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) - Quantum field heat engine powered by phonon-photon interactions [58.720142291102135]
We present a quantum heat engine based on a cavity with two oscillating mirrors.
The engine performs an Otto cycle during which the walls and a field mode interact via a nonlinear Hamiltonian.
arXiv Detail & Related papers (2023-05-10T20:27:15Z) - Heat transport and cooling performance in a nanomechanical system with
local and non local interactions [68.8204255655161]
We study heat transport through a one dimensional time-dependent nanomechanical system.
The system presents different stationary transport regimes depending on the driving frequency, temperature gradients and the degree of locality of the interactions.
arXiv Detail & Related papers (2022-02-21T12:03:54Z) - Thermodynamics of interacting many-body quantum systems [0.0]
In this PhD thesis I summarise some of the most important results obtained over the duration of my PhD.
The topics of discussion encompass three main themes: spin/particle transport in non-integrable systems, explorations in eigenstate thermalisation and finite-temperature transport in autonomous thermal machines.
arXiv Detail & Related papers (2021-12-21T19:18:09Z) - Fast Thermalization from the Eigenstate Thermalization Hypothesis [69.68937033275746]
Eigenstate Thermalization Hypothesis (ETH) has played a major role in understanding thermodynamic phenomena in closed quantum systems.
This paper establishes a rigorous link between ETH and fast thermalization to the global Gibbs state.
Our results explain finite-time thermalization in chaotic open quantum systems.
arXiv Detail & Related papers (2021-12-14T18:48:31Z) - Thermodynamics of a continuous quantum heat engine: Interplay between
population and coherence [0.0]
We present a detailed thermodynamic analysis of a three-level quantum heat engine coupled continuously to hot and cold reservoirs.
The system is driven by an oscillating external field and is described by the Markovian quantum master equation.
We calculate the heat, power, and efficiency of the system for the heat-engine operating regime and also examine the thermodynamic uncertainty relation.
arXiv Detail & Related papers (2021-07-13T09:52:01Z) - Taking the temperature of a pure quantum state [55.41644538483948]
Temperature is a deceptively simple concept that still raises deep questions at the forefront of quantum physics research.
We propose a scheme to measure the temperature of such pure states through quantum interference.
arXiv Detail & Related papers (2021-03-30T18:18:37Z) - Evolution of a Non-Hermitian Quantum Single-Molecule Junction at
Constant Temperature [62.997667081978825]
We present a theory for describing non-Hermitian quantum systems embedded in constant-temperature environments.
We find that the combined action of probability losses and thermal fluctuations assists quantum transport through the molecular junction.
arXiv Detail & Related papers (2021-01-21T14:33:34Z) - Non-Markovian effect on quantum Otto engine: -Role of system--reservoir
interaction- [0.0]
We study a limit cycle of a quantum Otto engine whose each cycle consists of two finite-time quantum isochoric processes.
We investigate the non-Markovian effect (short-time behavior of the reduced dynamics in the quantum isochoric processes) on work extraction after infinite repetition of the cycles.
arXiv Detail & Related papers (2020-06-24T10:01:24Z)
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.