Gambling with superconducting fluctuations

Abstract

Superconducting nanowires and Josephson junctions, when biased close to superconducting critical current, can switch to a non-zero voltage state by thermal or quantum fluctuations. The process is understood as an escape of a Brownian particle from a metastable state. Since this effect is fully stochastic, we propose to use it for generating random numbers. We present protocol for obtaining random numbers and test the experimentally harvested data for their fidelity.

References in corpus (4)

• Real time demonstration of high bitrate quantum random number generation with coherent laser light
• Fast electron thermometry towards ultra-sensitive calorimetric detection
• Asymmetric noise probed with a Josephson junction
• Origin of Hysteresis in a Proximity Josephson Junction

Cited by in corpus (12)

• Nanosecond thermometry with Josephson junction
• Electrostatic control of phase slips in Ti Josephson nanotransistors
• Fast thermometry with a proximity Josephson junction
• Non-invasive thermometer based on proximity superconductor for ultra-sensitive calorimetry
• Thermodynamics of Random Number Generation
• Quantum thermodynamics with a single superconducting vortex
• Flipping coin experiment for studying switching in Josephson junctions and superconducting wires
• Probing confined vortices with a superconducting nanobridge
• Heat hunting in freezer: Direct measurement of quasiparticle diffusion in superconducting nanowire
• Stochastic resonance in thermally bistable Josephson weak-links and micro-SQUIDs
• Phase slips dynamics in gated Ti and V all-metallic supercurrent nano-transistors: a review
• Stochastic thermal feedback in switching measurements of superconducting nanobridge caused by overheated electrons and phonons