Quantum thermal transistors: Operation characteristics in steady state versus transient regimes

Ghosh, Riddhi; Ghoshal, Ahana; Sen, Ujjwal

doi:10.1103/physreva.103.052613

Cited by 15 publications

(5 citation statements)

References 85 publications

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“…It is obvious that 11 > 22 > 33 > 44 . Since the same steady state can be obtained no matter whether the system is connected to IHR or CHR, the effect of CHR is only taken by CHC, i.e., equation (45), which can be found by comparing equations ( 29) and (44). Now, CHC can be rewritten as…”

Section: Appendix C Steady State With All Dissipation Rates Exactly T...mentioning

confidence: 99%

“…In recent years, various quantum thermal devices based on versatile systems have been proposed such as quantum engine and refrigerator [26][27][28][29][30], quantum thermometers [31,32], thermal rectifier [33] and switch [34,35], thermal diode [36][37][38][39] and transistor [40][41][42][43][44][45][46][47][48] and so on. Experimental advances have also been made continuously [20,29,[49][50][51][52][53][54][55], thermodynamic devices at the quantum level using superconducting qubits, quantum dots, cavity QED, circuit QED, and other systems have been realized.…”

Section: Introductionmentioning

confidence: 99%

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Heat transfer in transversely coupled qubits: optically controlled thermal modulator with common reservoirs

Yang¹,

Liu²,

Yu³

2022

J. Phys. A: Math. Theor.

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This paper systematically studied heat transfer through two transversely coupled qubits in contact with two types of heat reservoirs. One is the independent heat reservoir which essentially interacts with only a single qubit, the other is the common heat reservoir which is allowed to simultaneously interact with two qubits. Compared to independent heat reservoirs, common reservoirs always suppress heat current in most cases. However, the common environment could enhance heat current, if the dissipation rate corresponding to the higher eigenfrequency is significantly higher than that corresponding to the lower eigenfrequency. In particular, in the case of resonant coupling of two qubits and the proper dissipations, the steady state can be decomposed into a stationary dark state which doesn't evolve and contributes zero heat current, and a residual steady state which corresponds to the maximal heat current. This dark state enables us to control steady-state heat current with an external control field and design a thermal modulator. In addition, we find that inverse heat currents could be present in the dissipative subchannels between the system and reservoirs, which interprets the suppression roles of common heat reservoirs. We also calculate the concurrence of assistance (COA) of the system and find that heat current and COA have the same trend with temperature, which further indicates that entanglement can be regarded as a resource to regulate heat transport.

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Section: Appendix C Steady State With All Dissipation Rates Exactly T...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Heat transfer in transversely coupled qubits: optically controlled thermal modulator with common reservoirs

Yang¹,

Liu²,

Yu³

2022

J. Phys. A: Math. Theor.

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show abstract

“…Negative differential thermal conductivity is needed to have thermal transistors (see also [45]). Thermal transistors are a very active topic nowadays, with a variety of physical realizations [130][131][132][133][134][135][136][137].…”

Section: Negative Differential Thermal Conductivity Thermal Transistorsmentioning

confidence: 99%

Non-Equilibrium Thermodynamics of Heat Transport in Superlattices, Graded Systems, and Thermal Metamaterials with Defects

Jou

Restuccia

2023

Entropy

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In this review, we discuss a nonequilibrium thermodynamic theory for heat transport in superlattices, graded systems, and thermal metamaterials with defects. The aim is to provide researchers in nonequilibrium thermodynamics as well as material scientists with a framework to consider in a systematic way several nonequilibrium questions about current developments, which are fostering new aims in heat transport, and the techniques for achieving them, for instance, defect engineering, dislocation engineering, stress engineering, phonon engineering, and nanoengineering. We also suggest some new applications in the particular case of mobile defects.

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“…Quantum thermodynamics provides us with the potential to constructively use quantum features to exploit quantum thermal devices that can manipulate the microscopic energy flow. In recent years, various quantum thermal devices based on versatile systems have been proposed such as quantum engine and refrigerator [26][27][28][29][30], quantum thermometers [31,32], thermal rectifier [33] and switch [34,35], thermal diode [36,37] and transistor [38][39][40][41][42][43][44] and so on. Experimental advances have also made continuously [20,29,[45][46][47][48][49][50][51].…”

Section: Introductionmentioning

confidence: 99%

Heat transfer in transversely coupled qubits: Optically controlled thermal modulator with common reservoirs

Yang,

Liu,

2022

Preprint

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This paper systematically studied two transversely coupled qubits' heat transfer in contact with independent and common heat reservoirs. We reveal that common heat reservoirs can slightly suppress the steady-state heat currents compared to independent heat reservoirs, and the transverse coupling of qubits can enhance the suppression roles. In particular, in the case of resonant coupling of two qubits and the proper dissipations, the steady state can be decomposed into a stationary dark state which doesn't evolve and contributes zero heat current, and a steady state which corresponds to the maximal heat current. This dark state enables us to control steady-state heat current with an external control field and design a thermal modulator. In addition, we find that inverse heat currents could be present in the dissipative subchannels between the system and reservoirs, which interprets the suppression roles of common heat reservoirs. We also find that heat current for a given system has a similar changing tendency to the concurrence of assistance with temperature.

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Quantum thermal transistors: Operation characteristics in steady state versus transient regimes

Cited by 15 publications

References 85 publications

Heat transfer in transversely coupled qubits: optically controlled thermal modulator with common reservoirs

Heat transfer in transversely coupled qubits: optically controlled thermal modulator with common reservoirs

Non-Equilibrium Thermodynamics of Heat Transport in Superlattices, Graded Systems, and Thermal Metamaterials with Defects

Heat transfer in transversely coupled qubits: Optically controlled thermal modulator with common reservoirs

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