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A Superconducting Persistent Current Qubit | | T.P. Orlando
; J.E. Mooji
; Lin Tian
; Caspar H. van der Wal
; L. Levitov
; Seth Lloyd
; J.J. Mazo ( MIT
; Delft University of Technology
; University of Zaragoza
; | | Date: |
20 Aug 1999 | | Subject: | cond-mat quant-ph | | Affiliation: | 1,2), Lin Tian , Caspar H. van der Wal , L. Levitov , Seth Lloyd and J.J. Mazo (1,3) ( MIT (USA), Delft University of Technology (The Netherlands), University of Zaragoza (Spain) | | Abstract: | We present the design of a superconducting qubit that has circulating currents of opposite sign as its two states. The circuit consists of three nano-scale aluminum Josephson junctions connected in a superconducting loop and controlled by magnetic fields. The advantages of this qubit are that it can be made insensitive to background charges in the substrate, the flux in the two states can be detected with a SQUID, and the states can be manipulated with magnetic fields. Coupled systems of qubits are also discussed as well as sources of decoherence. | | Source: | arXiv, cond-mat/9908283 | | Services: | Forum | Review | PDF | Favorites | |
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