Hysteretic superconducting heat-flux quantum modulator

Abstract

We discuss heat transport in a thermally-biased SQUID in the presence of an external magnetic flux, when a non-negligible inductance of the SQUID ring is taken into account. A properly sweeping driving flux causes the thermal current to modulate and behave hysteretically. The response of this device is analysed as a function of both the hysteresis parameter and degree of asymmetry of the SQUID, highlighting the parameter range over which hysteretic behavior is observable. Markedly, also the temperature of the SQUID shows hysteretic evolution, with sharp transitions characterized by temperature jumps up to, e.g., ~ 38mK for a realistic Al-based setup. In view of these results, the proposed device can effectively find application as a temperature-based superconducting memory element, working even at GHz frequencies by suitably choosing the superconductor on which the device is based.

9 pages, 10 figures

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• A Microwave Josephson Refrigerator
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Cited by in corpus (19)

• Towards phase-coherent caloritronics in superconducting circuits
• Phase-Tunable Thermal Logic: Computation with Heat
• Signatures of a topological phase transition in a planar Josephson junction
• Josephson thermal memory
• Josephson-Threshold Calorimeter
• Photonic heat rectification in a coupled qubits system
• Non-linear critical current thermal response of an asymmetric Josephson tunnel junction
• Phase-coherent solitonic Josephson heat oscillator
• Coherent Josephson thermodynamic cycles
• Solitonic Josephson thermal transport
• Phase-tunable Josephson thermal router
• rf-SQUID measurements of anomalous Josephson effect
• Solitonic thermal transport in a current biased long Josephson junction
• Proximity SQUID single photon detector via temperature-to-voltage conversion
• Thermometry and memcapacitance with qubit-resonator system
• Thermal flux-flow regime in long Josephson tunnel junctions
• Bipolar thermoelectrical SQUIPT (BTSQUIPT)
• Detector of microwave photon pairs based on a Josephson photomultiplier
• Phase-dependent heat current of granular Josephson junction for different geometries