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Fault-tolerant superconducting qubit | | Mateusz Cholascinski
; Yuriy Makhlin
; Gerd Schön
; | | Date: |
19 Jan 2007 | | Subject: | Mesoscopic Systems and Quantum Hall Effect | | Abstract: | We describe a qubit encoded in continuous quantum variables of an rf-SQUID. Since the number of accessible states in the system is infinite, we may protect its two-dimensional subspace from small errors introduced by the interaction with the environment as well as during manipulations. We show how to prepare the fault-tolerant state and manipulate the system. The discussed operations suffice to perform quantum computation on the encoded state, syndrome extraction and quantum error correction. We also comment on the physical sources of errors, and possible imperfections while manipulating the real system. | | Source: | arXiv, cond-mat/0701469 | | Services: | Forum | Review | PDF | Favorites | |
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