Journal
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
Volume 43, Issue 10, Pages 1792-1797Publisher
ELSEVIER
DOI: 10.1016/j.physe.2011.06.013
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Funding
- ICTP, Italy
- Erasmus Mundus (Lund University, Sweden)
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The speed of computations is investigated by means of the orthogonality speed for a charged qubit interacting with a single cavity field prepared initially in a Fock state or Binomial state. We observe that the rate of the computational speed is related to the number of photons inside the cavity. Moreover, we show that the qubit-field coupling plays an opposite role, where the speed of computations is decreased as the coupling is increased. We suggest using the number of photons in the field as a control parameter to improve the speed of computations. (C) 2011 Elsevier B.V. All rights reserved.
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