Manipulation and dynamics of quantum spin systems

Andrea Casaccino, Stefano Mancini, Simone Severini B

M. S. Makivić, Mark Jarrell

LIBERTI G, Franco Piperno, Francesco Plastina

In a ferromagnetic spin chain, the control of the local effective magnetic field allows us to manipulate the static and dynamical properties of entanglement. In particular, the propagation of quantum correlations can be driven to a great extent so as to achieve an entanglement transfer on demand toward a selected site.

Jürg Martin Fröhlich, Antti Knowles, Enno Lenzmann

Diego Porras, J. I. Cirac

We show that the physical system consisting of trapped ions interacting with lasers may undergo a rich variety of quantum phase transitions. By changing the laser intensities and polarizations the dynamics of the internal states of the ions can be controlled, in such a way that an Ising or Heisenberg-like interaction is induced between effective spins. Our scheme allows us to build an analogue quantum simulator of spin systems with trapped ions, and observe and analyze quantum phase transitions with unprecedented opportunities for the measurement and manipulation of spins.

V Ulyanov