Thermal rectification and negative differential thermal conductivity based on a parallel-coupled double quantum-dot

• URL: http://arxiv.org/abs/2007.04729v1
• Date: Thu, 9 Jul 2020 11:59:56 GMT
• Title: Thermal rectification and negative differential thermal conductivity based on a parallel-coupled double quantum-dot
• Authors: Yanchao Zhang and Shanhe Su
• Abstract summary: We demonstrate the effects of thermal rectification and negative differential thermal conductance (NDTC) exist in this system. We find that this system can achieve a high thermal rectification ratio and NDTC when the asymmetry factor of the system is enhanced.
• Score: 10.266211487293651
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: We investigate the heat flow transport properties of a parallel-coupled double quantum-dot system connected to two reservoirs with a temperature bias in the Coulomb blockade regime. We demonstrate that the effects of thermal rectification and negative differential thermal conductance (NDTC) exist in this system and analyze the influences of energy level difference and Coulomb interaction on the thermal rectification and NDTC. We find that this system can achieve a high thermal rectification ratio and NDTC when the asymmetry factor of the system is enhanced.

Related papers

• Quantum heat valve and diode of strongly coupled defects in amorphous material [7.187258723364173]
  We employ two coupled two-level atoms to manipulate the magnitude and direction of heat transport. It is found that a high-performance heat diode can be realized in the wide Piezo voltage range at different temperatures.
  arXiv  Detail & Related papers  (2024-01-09T08:14:15Z)
• 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 Fisher Information for Different States and Processes in Quantum Chaotic Systems [77.34726150561087]
  We compute the quantum Fisher information (QFI) for both an energy eigenstate and a thermal density matrix. We compare our results with earlier results for a local unitary transformation.
  arXiv  Detail & Related papers  (2023-04-04T09:28:19Z)
• Characterizing the performance of heat rectifiers [17.77602155559703]
  We quantify the performance of a heat by mapping out the trade-off between heat currents and rectification. Our results demonstrate the superiority of two strongly-interacting qubits for heat rectification.
  arXiv  Detail & Related papers  (2022-08-23T08:48:05Z)
• Floquet-heating-induced Bose condensation in a scar-like mode of an open driven optical-lattice system [62.997667081978825]
  We show that the interplay of bath-induced dissipation and controlled Floquet heating can give rise to non-equilibrium Bose condensation. Our predictions are based on a microscopic model that is solved using kinetic equations of motion derived from Floquet-Born-Markov theory.
  arXiv  Detail & Related papers  (2022-04-14T17:56:03Z)
• Heat transport and rectification via quantum statistical and coherence asymmetries [0.0]
  We show that heat rectification is possible even with symmetric medium-bath couplings if the two baths differ in quantum statistics or coherence. Our results can be significant for heat management in hybrid open quantum systems or solid-state thermal circuits.
  arXiv  Detail & Related papers  (2022-04-14T15:59:03Z)
• The qutrit as a heat diode and circulator [0.0]
  We investigate the heat transport properties of a three-level system coupled to three thermal baths, assuming a model based on superconducting circuit implementations. We find thermal rectification and circulation effects not expected in configurations with perfectly-filtered couplings. Heat leakage in off-resonant transitions can be exploited to make the system work as an ideal diode where heat flows in the same direction between two baths irrespective of the sign of the temperature difference.
  arXiv  Detail & Related papers  (2021-09-14T09:47:08Z)
• Measurement of the Low-temperature Loss Tangent of High-resistivity Silicon with a High Q-factor Superconducting Resonator [58.720142291102135]
  We present the direct loss tangent measurement of a high-resist intrinsicivity (100) silicon wafer in the temperature range from 70 mK to 1 K. The measurement was performed using a technique that takes advantage of a high quality factor superconducting niobium resonator.
  arXiv  Detail & Related papers  (2021-08-19T20:13:07Z)
• Heat transport in a two-level system driven by a time-dependent temperature [0.0]
  thermotronics aims to develop thermal circuits that operate with temperature biases and heat currents. Findings are important for efforts to design non-linear thermal components that operate with more than one diode.
  arXiv  Detail & Related papers  (2021-03-12T07:23:51Z)
• Out-of-equilibrium quantum thermodynamics in the Bloch sphere: temperature and internal entropy production [68.8204255655161]
  An explicit expression for the temperature of an open two-level quantum system is obtained. This temperature coincides with the environment temperature if the system reaches thermal equilibrium with a heat reservoir. We show that within this theoretical framework the total entropy production can be partitioned into two contributions.
  arXiv  Detail & Related papers  (2020-04-09T23:06:43Z)
• Thermoelectricity in Quantum-Hall Corbino Structures [48.7576911714538]
  We measure the thermoelectric response of Corbino structures in the quantum Hall effect regime. We predict a figure of merit for the efficiency of thermoelectric cooling which becomes very large for partially filled Landau levels.
  arXiv  Detail & Related papers  (2020-03-03T19:19:28Z)

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.