Thermal transistor effect in quantum systems

Abstract

We study a quantum system composed of three interacting qubits, each coupled to a different thermal reservoir. We show how to engineer it in order to build a quantum device that is analogous to an electronic bipolar transistor. We outline how the interaction among the qubits plays a crucial role for the appearance of the effect, also linking it to the characteristics of system-bath interactions that govern the decoherence and dissipation mechanism of the system. By comparing with previous proposals, the model considered here extends the regime of parameters where the transistor effect shows up and its robustness with respect to small variations of the coupling parameters. Moreover, our model appears to be more realistic and directly connected in terms of potential implementations to feasible setups in the domain of quantum spin chains and molecular nanomagnets.

11 pages, 7 figures. Comments are welcome

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Cited by in corpus (13)

• Floquet Quantum Thermal Transistor
• Finite-size criticality in fully connected spin models on superconducting quantum hardware
• Unveiling Detuning Effects for Heat-Current Control in Quantum Thermal Devices
• Pure classical correlation dominant quantum thermal diode via three triangular-coupled qubits
• Heat transfer in transversely coupled qubits: Optically controlled thermal modulator with common reservoirs
• Quantum Thermal Amplifiers with Engineered Dissipation
• Multiparty Spohn's theorem for a combination of local Markovian and non-Markovian quantum dynamics
• Transient effects in quantum refrigerators with finite environments
• All-optical control of thermal conduction in waveguide QED
• Magnetically controlled quantum thermal devices via three nearest-neighbor coupled spin-1/2 systems
• Quantum Control of Heat Current
• Dual effects of Lamb Shift in Quantum Thermodynamical Systems
• Quantum Heat Transformers