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Quantum state engineering with Josephson-junction devices | | Yuriy Makhlin
; Gerd Schoen
; Alexander Shnirman
; | | Date: |
15 Nov 2000 | | Journal: | Rev. Mod. Phys. 73, 357-400 (2001) DOI: 10.1103/RevModPhys.73.357 | | Subject: | Mesoscopic Systems and Quantum Hall Effect; Superconductivity | cond-mat.mes-hall cond-mat.supr-con quant-ph | | Abstract: | We review recent theoretical and experimental progress in quantum state engineering with Josephson junction devices. The concepts of quantum computing have stimulated an increased activity in the field. Either charges or phases (fluxes) of the Josephson systems can be used as quantum degrees of freedom, and their quantum state can be manipulated coherently by voltage and current pulses. They thus can serve as qubits, and quantum logic gates can be performed. Their phase coherence time, which is limited, e.g., by the electromagnetic fluctuations in the control circuit, is long enough to allow a series of these manipulations. The quantum measurement process performed by a single-electron transistor, a SQUID, or further nanoelectronic devices is analyzed in detail. | | Source: | arXiv, cond-mat/0011269 | | Services: | Forum | Review | PDF | Favorites | |
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