Schroeder, C. A. ; Agarwal, G. S. (2011) Optimized pulse sequences for suppressing unwanted transitions in quantum systems Physical Review A, 83 (1). 012324_1-012324_6. ISSN 1050-2947
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Official URL: http://pra.aps.org/abstract/PRA/v83/i1/e012324
Related URL: http://dx.doi.org/10.1103/PhysRevA.83.012324
Abstract
We investigate the nature of the pulse sequence so that unwanted transitions in quantum systems can be inhibited optimally. For this purpose we show that the sequence of pulses proposed by Uhrig Phys. Rev. Lett. 98 100504 (2007) in the context of inhibition of environmental dephasing effects is optimal. We derive exact results for inhibiting the transitions and confirm the results numerically. We posit a very significant improvement by usage of the Uhrig sequence over an equidistant sequence in decoupling a quantum system from unwanted transitions. The physics of inhibition is the destructive interference between transition amplitudes before and after each pulse.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to The American Physical Society. |
| ID Code: | 78345 |
| Deposited On: | 19 Jan 2012 12:22 |
| Last Modified: | 19 Jan 2012 12:22 |
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