Calorimetry of a Quantum Phase Slip
arXiv:2202.08726 · doi:10.1038/s41567-022-01844-0
Abstract
In a Josephson junction, which is the central element in superconducting quantum technology, irreversibility arises from abrupt slips of the gauge-invariant quantum phase difference across the contact. A quantum phase slip (QPS) is often visualized as the tunneling of a flux quantum in the transverse direction to the superconducting weak link, which produces dissipation. In this work, we detect the instantaneous heat release caused by a QPS in a Josephson junction using time-resolved electron thermometry on a nanocalorimeter, signaled by an abrupt increase of the local electronic temperature in the weak link and subsequent relaxation back to equilibrium. Beyond providing a cornerstone in experimental quantum thermodynamics in form of observation of heat in an elementary quantum process, this result sets the ground for experimentally addressing the ubiquity of dissipation, including that in superconducting quantum sensors and qubits.
References in corpus (7)
- Phase controlled superconducting proximity effect probed by tunneling spectroscopy
- Fast electron thermometry towards ultra-sensitive calorimetric detection
- Proximity DC squids in the long junction limit
- Quantized current steps due to the a.c. coherent quantum phase-slip effect
- A Single-Quantum-Dot Heat Valve
- Preliminary demonstration of a persistent Josephson phase-slip memory cell with topological protection
- Origin of Hysteresis in a Proximity Josephson Junction
Cited by in corpus (13)
- Effective estimation of entropy production with lacking data
- Heat dissipation mechanisms in hybrid superconductor-semiconductor devices revealed by Joule spectroscopy
- Quantum thermodynamics with a single superconducting vortex
- Dicke superradiant enhancement of the heat current in circuit QED
- Heat-transfer fingerprint of Josephson breathers
- Phase dynamics of tunnel Al-based ferromagnetic Josephson junctions
- Real-time milli-Kelvin thermometry in a semiconductor qubit architecture
- Thermodynamics of autonomous optical Bloch equations
- On "Consistent Quantization of Nearly Singular Superconducting Circuits"
- Measuring pulse heating in Si quantum dots with individual two-level fluctuators
- Coherence-Mediated Quantum Thermometry in a Hybrid Circuit-QED Architecture
- Shapiro resonances in ac-self-modulated exciton-polariton Josephson junctions
- Optimized proximity thermometer for ultrasensitive detection: Role of an ohmic electromagnetic environment