2011/05/29 by Ting-Ting Kang, Susumu Komiyama, Kang, Ting-Ting +9
Computer Science · Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #FOS: Physical sciences #Mesoscale and Nanoscale Physics (cond-mat.mes-hall) #Quantum Information and Cryptography #Semiconductor Quantum Structures and Devices #cond-mat.mes-hall
paper · pdf · doi:10.48550/arxiv.1105.5767
8 pages, 4 figures
arxiv created 2011/05/29 · openalex publication_date 2011/05/29 · arxiv updated 2011/05/31 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
An electrically isolated quantum well (QW) island can be positively charged by incoming infrared photon, because its electrons absorb photon energy via intersubband transition and acquire enough energy to escape it. This process has been used in a double QW photon-detector. Here, we present the observation of so-called negative photon-response in such detector. Its origin is clarified to be an electron mobility reduction phenomenon resulted from the photon induced charges.