 Macroscopic Quantum Coherence and Decoherence in SquidsA. J. Leggett ()
A chapter in Macroscopic Quantum Coherence and Quantum Computing, 2001, pp 1-6 from Springer Abstract: Abstract I consider the general problem of decoherence in Josephson systems, with particular reference to the question of how far we can reliably infer the degree of such decoherence, in an experiment of the MQC type, either by a priori order-of-magnitude arguments or from other types of experiment which may be easier at the initial stages of the program, such as measurements of dissipation in the quasiclassical regime or of tunnelling rates out of a metastablestate. Potential sources of decoherence which will be considered include normal electrons, phonons, nuclear spins, the radiation field and the “passing truck.” It is concluded that the effects of all but the last can be reaosnably estimated, and that there are good prospects (confirmed by recent experiments) of reducing them to manageable levels. The implications for the use of suchsystems for practical quantum computation are briefly considered. Keywords: Josephson Junction; Normal Electron; Tunneling Splitting; Trap Flux; Intrinsic Decoherence (search for similar items in EconPapers) There are no downloads for this item, see the EconPapers FAQ for hints about obtaining it. Related works: Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text Persistent link: https://EconPapers.repec.org/RePEc:spr:sprchp:978-1-4615-1245-5_1 Ordering information: This item can be ordered from DOI: 10.1007/978-1-4615-1245-5_1 Access Statistics for this chapter More chapters in Springer Books from Springer |
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