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Vibrational Decoherence in Ion Trap Quantum Computers
Author(s) -
Garg Anupam
Publication year - 1998
Publication title -
fortschritte der physik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.469
H-Index - 71
eISSN - 1521-3978
pISSN - 0015-8208
DOI - 10.1002/(sici)1521-3978(199811)46:6/8<749::aid-prop749>3.0.co;2-i
Subject(s) - quantum decoherence , adiabatic process , ion trap , physics , ion , quantum computer , trap (plumbing) , trapped ion quantum computer , scaling , quantum mechanics , atomic physics , quantum , quantum simulator , geometry , mathematics , meteorology
Abstract The ion trap quantum computer proposed by Cirac and Zoller [Phys. Rev. Lett. 74 , 4091 (1995)] is analyzed for decoherence due to vibrations of the ions. An adiabatic approximation exploiting the vast difference between the frequencies of the optical intraionic transition and the vibrational modes is used to find the decoherence time at any temperature T . The scaling of this decoherence time with the number of ions is discussed, and compared with that due to spontaneous emission.