Decoherence in ion trap quantum computers
نویسندگان
چکیده
منابع مشابه
Vibrational decoherence in ion-trap quantum computers
Decoherence is studied in an attractive proposal for an actual implementation of a quantum computer based on trapped ions. Emphasis is placed on the decoherence arising from the vibrational motion of the ions, which is compared with that due to spontaneous emission from excited states of the ions. The calculation is made tractable by exploiting the vast difference in time scales between the vib...
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The intrinsic decoherence from vibrational coupling of the ions in the CiracZoller quantum computer [Phys. Rev. Lett. 74, 4091 (1995)] is considered. Starting from a state in which the vibrational modes are at a temperature T , and each ion is in a superposition of an excited and a ground state, an adiabatic approximation is used to find the inclusive probability P (t) for the ions to evolve as...
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It has been demonstrated recently that quantum computers can dramatically speed up the task of nding factors of large numbers { a problem of great practical signiicance because of its cryptographic applications. Factors of an L-digit number can be found in L 2 time (compared to exp L 1=3 time) by utilizing the ability of a quantum computer to simultaneously follow all of the paths corresponding...
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ژورنال
عنوان ژورنال: Czechoslovak Journal of Physics
سال: 1996
ISSN: 0011-4626,1572-9486
DOI: 10.1007/bf02571179