Quantum Information Seminar: Sophie Schrimer, Swansea University | PIMS - Pacific Institute for the Mathematical Sciences

Topic

Quantum System Identification: Hamiltonian tomography and decoherence estimation from noisy time series data

Speakers

Swansea University

Details

Abstract:

I will discuss ways to characterize the dynamics of a quantum system given a restricted set of initial states that can be prepared and a very limited set of available measurements. I will first discuss strategies for Hamiltonian identification using Bayesian parameter estimation from noisy time series data, level structure identification and finally Hamiltonian reconstruction. I will then consider how to generalize this approach to open systems in special cases, e.g., to estimate dephasing rates, and possible alternatives.

References -- recent: http://arxiv.org/abs/1012.4593

http://arxiv.org/abs/0911.1367

http://arxiv.org/abs/0911.5429

http://arxiv.org/abs/0805.2725

http://arxiv.org/abs/quant-ph/0702123

and a link to the first one we did on this for 2-level systems: http://www.damtp.cam.ac.uk/user/sgs29/research/papers/PRA69n050306R.pdf