Dynamics in cold atoms state engineering and quenches with long-range interactions (Prof. A. Daley)
- Date: May 27, 2015
- Time: 03:00 PM - 05:00 PM (Local Time Germany)
- Speaker: Professor Dr. Andrew Dayley, University of Strathclyde, Computational Nonlinear & Quantum Optics group
- Room: Herbert Walther Lecture Hall
- Host: MPQ
In addition to coherent phenomena, it has become possible to engineer
open quantum systems, drawing new connections between many-body physics
and concepts from quantum optics. This is both intrinsically
interesting, and also an important tool for realising lower temperatures
and engineering many-body quantum states. I will discuss some of our
recent theoretical work in these directions. In terms of new tools, I
will discuss schemes for adiabatic state preparation of magnetically
ordered states in two-component bosons, especially analysing how these
can be affected by dissipation and classical noise. In certain regimes,
adiabatic processes can be particularly robust against typical noise
sources, and in some cases classical noise can be engineered to enhance
adiabaticity. I will also discuss quench dynamics for spin models
engineered with trapped ions, where it is possible to vary the range of
the interactions. This leads to interesting and sometimes
counterintuitive phenomena in correlation spreading and the growth of
entanglement when the interactions are long-range.