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Published on: August 2, 2019
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Quantum heat diode versus light emission in circuit quantum electrodynamical system.
Yu-Qiang Liu1, Yi-Jia Yang1, Chang-Shui Yu1,2
1School of Physics, Dalian University of Technology, Dalian 116024, China.
Physical Review. E
|May 18, 2023
Summary
Researchers designed a thermal diode using circuit quantum electrodynamics (circuit QED) for quantum thermodynamics. This device shows nonreciprocal heat transport, especially in ultrastrong coupling regimes, advancing quantum heat control.
Area of Science:
- Quantum Thermodynamics
- Quantum Optics
- Circuit Quantum Electrodynamics (Circuit QED)
Background:
- Precise control of heat transfer is crucial for developing quantum thermodynamical devices.
- Circuit quantum electrodynamics (circuit QED) offers controllable light-matter interactions and flexible coupling, making it a promising platform.
- Advancements in experimental technology enable the exploration of complex quantum systems.
Purpose of the Study:
- To design and investigate a thermal diode based on the two-photon Rabi model within a circuit QED system.
- To explore the performance of the thermal diode under different coupling conditions, including resonant and detuned ultrastrong coupling.
- To analyze photonic detection rates and their nonreciprocity as indicators of thermal transport behavior.
Main Methods:
- Utilizing the two-photon Rabi model in a circuit quantum electrodynamics framework.
- Simulating and analyzing heat transfer characteristics of the designed thermal diode.
- Investigating photonic detection rates and their nonreciprocal properties.
Main Results:
- A functional thermal diode was successfully designed and realized in the circuit QED system.
- The thermal diode exhibits nonreciprocal heat transport, particularly effective in detuned qubit-photon ultrastrong coupling regimes.
- Observed nonreciprocity in photonic detection rates mirrors the nonreciprocal heat transport, offering a quantum optical perspective.
Conclusions:
- The designed thermal diode demonstrates effective nonreciprocal heat transport in circuit QED systems.
- Ultrastrong coupling regimes significantly enhance the performance of the quantum thermal diode.
- Photonic detection rates provide a valuable tool for understanding and verifying nonreciprocal thermal behavior in quantum systems.
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