A self-calibrating superconducting pair-breaking detector
arXiv:2102.02254 · doi:10.1103/PhysRevLett.127.147001
Abstract
We propose and experimentally demonstrate a self-calibrating detector of Cooper pair depairing in a superconductor based on a mesoscopic superconducting island coupled to normal metal leads. On average, exactly one electron passes through the device per broken Cooper pair, independent of the absorber volume, device or material parameters. The device operation is explained by a simple analytical model and verified with numerical simulations in quantitative agreement with experiment. In a proof-of-concept experiment, we use such a detector to measure the high-frequency phonons generated by another, electrically decoupled superconducting island, with a measurable signal resulting from less than 10 fW of dissipated power.
arXiv comment5 pages, 3 figures; supplementary material included
References in corpus (28)
- Opportunities for mesoscopics in thermometry and refrigeration: Physics and applications
- Correlated Charge Noise and Relaxation Errors in Superconducting Qubits
- Parity lifetime of bound states in a proximitized semiconductor nanowire
- Protecting superconducting qubits from external sources of loss and heat
- Photon assisted tunneling as an origin of the Dynes density of states
- Quasiparticle relaxation of superconducting qubits in the presence of flux
- Digital coherent control of a superconducting qubit
- High-speed phonon imaging using frequency-multiplexed kinetic inductance detectors
- Vanishing quasiparticle density in a hybrid Al/Cu/Al single-electron transistor
- Phonon traps reduce the quasiparticle density in superconducting circuits
- Phonon-Mediated Quasiparticle Poisoning of Superconducting Microwave Resonators
- Position and energy-resolved particle detection using phonon-mediated microwave kinetic inductance detectors
- Quasiparticle generation efficiency in superconducting thin-films
- Mitigation of Cosmic Ray Effect on Microwave Kinetic Inductance Detector Arrays
- Real-time observation of discrete Andreev tunneling events
- Observations and modeling of large area normal-metal/insulator/superconductor refrigerator cooling from 300 mK to below 100 mK
- Thermal budget of superconducting digital circuits at sub-kelvin temperatures
- Effect of Measurement on the Periodicity of the Coulomb Staircase of a Superconducting Box
- Probing quasiparticle excitations in a hybrid single electron transistor
- Measurements and simulations of athermal phonon transmission from silicon absorbers to aluminium sensors
- InAs nanowire with epitaxial aluminium as a single-electron transistor with fixed tunnel barriers
- Crossover between electron-phonon and boundary resistance limited thermal relaxation in copper films
- Active quasiparticle suppression in a non-equilibrium superconductor
- Narrow band microwave radiation from a biased single-Cooper-pair transistor
- Detecting parity effect in a superconducting device in the presence of parity switches
- Thermal conductance of Nb thin films at sub-kelvin temperatures
- Design and operation of a microfabricated phonon spectrometer utilizing superconducting tunnel junctions as phonon transducers
- Optimized proximity thermometer for ultra-sensitive detection