2008/08/31 by Eugene V. Sukhorukov, Andrew N. Jordan
Computer Science · Physics and Astronomy · #Computer science #Condensed matter physics #Conductor #Dissipative system #Josephson effect #Limit (mathematics) #Materials science #Mesoscopic physics #Noise (video) #Physics #Pi Josephson junction #Quantum Information and Cryptography #Quantum and electron transport phenomena #Quantum mechanics #Superconductivity #cond-mat.mes-hall #cond-mat.supr-con #stochastic dynamics and bifurcation
paper · pdf · doi:10.1103/physrevlett.102.086806
published as Phys. Rev. Lett. 102, 086806 (2009) · 4 pages, 1 figure; published version
openalex publication_date 2009/02/26 · arxiv created 2009/02/28 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We demonstrate that by utilizing an overscreened Josephson junction as a noise detector it is possible to achieve the threshold regime, whereby the tails of the fluctuating current distribution are measured. This situation is realized by placing the Josephson junction and mesoscopic conductor in an external circuit with very low impedance. In the underdamped limit, overscreening the junction inhibits the energy diffusion in the junction, effectively creating a tunable activation barrier to the dissipative state. As a result, the activation rate is qualitatively different from the Arrhenius form.