Hybrid normal-superconducting Aharonov-Bohm quantum thermal device

Abstract

We propose and theoretically investigate the behavior of a ballistic Aharonov-Bohm (AB) ring when embedded in a N-S two-terminal setup, consisting of a normal metal (N) and superconducting (S) leads. This device is based on available current technologie and we show in this work that it constitutes a promising hybrid quantum thermal device, as quantum heat engine and quantum thermal rectifier. Remarkably, we evidence the interplay of single-particle quantum interferences in the AB ring and of the superconducting properties of the structure to achieve the hybrid operating mode for this quantum device. Its efficiency as a quantum heat engine reaches $55\%$ of the Carnot efficiency, and we predict thermal rectification factor attaining $350\%$. These predictions make this device highly promising for future phase-coherent caloritronic nanodevices.

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Cited by in corpus (12)

• Characterizing the performance of heat rectifiers
• Quantum-enhanced performance in superconducting Andreev-reflection engines
• Exact finite-time correlation functions for multi-terminal setups: Connecting theoretical frameworks for quantum transport and thermodynamics
• A review on Aharonov-Bohm quantum machines: Thermoelectric heat engines and diodes
• Thermoelectric processes of quantum normal-superconductor interfaces
• Thermal junctions controlled with Aharonov-Bohm phases
• Phase-controlled heat modulation with Aharonov-Bohm interferometers
• High-performance Andreev interferometer-based electronic coolers
• Topological Josephson Junctions in the Integer Quantum Hall Regime
• Majorana Thermoelectrics and Refrigeration
• Thermoelectric cooling of a finite reservoir coupled to a quantum dot
• Andreev bound state spectroscopy of a quantum-dot-based Aharonov-Bohm interferometer with superconducting terminals