Physics – Quantum Physics
Scientific paper
2011-01-17
Physics
Quantum Physics
4 pages, no figures
Scientific paper
A closed quantum system is defined as completely controllable if an arbitrary unitary transformation can be executed using the available controls. In practice, control fields are a source of unavoidable noise. Can one design control fields such that the effect of noise is negligible on the time-scale of the transformation? Complete controllability in practice requires that the effect of noise can be suppressed for an arbitrary transformation. The present study considers a paradigm of control, where the Lie-algebraic structure of the control Hamiltonian is fixed, while the size of the system increases, determined by the dimension of the Hilbert space representation of the algebra. We show that for large quantum systems, generic noise in the controls dominates for a typical class of target transformations i.e., complete controllability is destroyed by the noise.
Khasin Michael
Kosloff Ronnie
No associations
LandOfFree
Noise and Controllability: suppression of controllability in large quantum systems 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 Noise and Controllability: suppression of controllability in large quantum systems, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Noise and Controllability: suppression of controllability in large quantum systems will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-286426