Tunneling under Coherent Control by Sequences of Unitary Pulses

Details Tunneling under Coherent Control by Sequences of Unitary Pulses Tunneling under Coherent Control by Sequences of Unitary Pulses

2010-09-07

arxiv.org/abs/1009.1403v1

Physics

Quantum Physics

24 pages, 1 figure

Scientific paper

A general coherent control scenario to suppress, or accelerate, tunneling of quantum states decaying into a continuum, is investigated. The method is based on deterministic, or stochastic, sequences of unitary pulses that affect the underlying interference phenomena responsible for quantum dynamics, without inducing decoherence, or collapsing the coherent evolution of the system. The influence of control sequences on the ensuing quantum dynamics is analyzed by using perturbation theory to first order in the control pulse fields and compared to dynamical decoupling (DD) protocols and sequences of pulses that collapse the coherent evolution and induce quantum Zeno (QZE) or quantum anti-Zeno effects (AZE). The analysis reveals a subtle interplay between coherent and incoherent phenomena and demonstrating that dynamics analogous to evolution due to QZE or AZE can be generated from stochastic sequences of unitary pulses when averaged over all possible realizations.

Affiliated with

Also associated with

No associations

Rating

Tunneling under Coherent Control by Sequences of Unitary Pulses does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Tunneling under Coherent Control by Sequences of Unitary Pulses, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Tunneling under Coherent Control by Sequences of Unitary Pulses will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-31363