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Эта публикация цитируется в 1 научной статье (всего в 1 статье)
Quantum computing
Spin-entangled electrons in mesoscopic systems
G. Burkard, E. V. Sukhorukov, P. Recher, D. Loss Department of Physics and Astronomy, University of Basel, Klingelbergstrasse 82, CH-4056 Basel, Switzerland
Аннотация:
Entanglement acts as a fundamental resource for many applications in quantum communication. We propose and theoretically analyze methods for preparing and detecting entanglement between the spins of electrons in a mesoscopic environment. The entanglement production mechanism which we present is based on two quantum dots coupled to a superconductor from which paired electrons are injected via Andreev tunneling. The spin-correlated electrons can then hop from the quantum dots into normal leads. For detection we propose to measure the shot noise which is produced by the entangled electrons after they have passed a beam splitter. The enhancement of the noise by a factor of two turns out to be a unique signature for the spin singlet, a maximally entangled state. In a different setting, the entangled ground state in two tunnel-coupled quantum dots is detected via the Aharonov–Bohm oscillations in the co-tunneling current.
Образец цитирования:
G. Burkard, E. V. Sukhorukov, P. Recher, D. Loss, “Spin-entangled electrons in mesoscopic systems”, УФН, 171, приложение к № 10 (2001), 126–131; Phys. Usp., 44:10 suppl. (2001), s126–s131
Образцы ссылок на эту страницу:
https://www.mathnet.ru/rus/ufn5647 https://www.mathnet.ru/rus/ufn/v171/i13/p126
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Страница аннотации: | 169 | PDF полного текста: | 43 |
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