2004/12/08 by Tero T. Heikkila, Tero T. Heikkilä, Pauli Virtanen +3 · 38 citations
Computer Science · Physics and Astronomy · #Condensed matter physics #Cooper pair #Current (fluid) #Fano factor #Josephson effect #Measure (data warehouse) #Noise (video) #Optics #Physics #Quantum Information and Cryptography #Quantum and electron transport phenomena #Quantum tunnelling #Semiconductor Quantum Structures and Devices #Shot noise #Superconductivity #cond-mat.mes-hall #cond-mat.supr-con
paper · pdf · doi:10.1103/physrevlett.93.247005
published in Physical Review Letters 93(24), 247005 (American Physical Society) · 4 pages, 4 figures
openalex publication_date 2004/12/08 · arxiv created 2004/12/09 · arxiv updated 2013/04/04 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We study a Josephson junction (JJ) in the regime of incoherent Cooper-pair tunneling, capacitively coupled to a nonequilibrium noise source. The current-voltage (I-V) characteristics of the JJ are sensitive to the excess voltage fluctuations in the source, and can thus be used for wideband noise detection. Under weak driving, the odd part of the I-V can be related to the second cumulant of noise, whereas the even part is due to the third cumulant. After calibration, one can measure the Fano factors for the noise source, and get information about the frequency dependence of the noise.