Optimized pulse sequences for suppressing unwanted transitions in quantum systems Academic Article

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.PRLTAO0031-900710.1103/PhysRevLett.98.100504 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. 2011 American Physical Society.

authors

• Agarwal, Girish

published proceedings

• Physical Review A

author list (cited authors)

• Schroeder, C. A., & Agarwal, G. S.

complete list of authors

• Schroeder, CA||Agarwal, GS

publisher

• American Physical Society (APS)  Publisher

published in

• Physical Review A (PRA)  Journal

keywords

• 51 Physical Sciences
• 5102 Atomic, Molecular And Optical Physics
• 5108 Quantum Physics

Digital Object Identifier (DOI)

• 10.1103/physreva.83.012324

start page

• 012324

volume

• 83

issue

• 1