2024-03-28T13:10:04Zhttps://eprints.lib.hokudai.ac.jp/dspace-oai/requestoai:eprints.lib.hokudai.ac.jp:2115/339072022-11-17T02:08:08Zhdl_2115_20057hdl_2115_148Superconductor-Based Quantum-Dot Light-Emitting Diodes: Role of Cooper Pairs in Generating Entangled Photon PairsSuemune, IkuoAkazaki, TatsushiTanaka, KazunoriJo, MasafumiUesugi, KatsuhiroEndo, MichiakiKumano, HidekazuHanamura, EiichiTakayanagi, HideakiYamanishi, MasamichiKan, Hirofumientangled photon paircooper pairquantum dotexcitonLED549The realization of solid-state photon sources that are capable of on-demand generation of an entangled single-photon pair at a time is highly desired for quantum information processing and communication. A new method of generating an entangled single-photon pair at a time is proposed employing Cooper-pair-related radiative recombination in a quantum dot (QD). Cooper pairs are bosons and the control of their number states is difficult. Pauli's exclusion principle on quasiparticles in a discrete state of a QD regulates the number state of the generated photon pairs in this scheme. The fundamental heterostructures for constructing superconductor-based quantum-dot light-emitting diodes (SQ-LEDs) and the fundamental operation conditions of SQ-LED will be discussed. The experimental studies on Cooper-pair injection into the related semiconductor structures will be also discussed.Japan Society of Applied PhysicsJournal Articleapplication/pdfhttp://hdl.handle.net/2115/33907https://eprints.lib.hokudai.ac.jp/dspace/bitstream/2115/33907/1/266-JJAP06-Text.pdf0021-49221347-4065Japanese Journal of Applied Physics4512926492712006enginfo:doi/10.1143/JJAP.45.9264author