Hannover 2016 – wissenschaftliches Programm

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A: Fachverband Atomphysik

A 14: Ultracold Atoms, Ions and Molecules III (with Q)

A 14.5: Vortrag

Dienstag, 1. März 2016, 12:00–12:15, f342

Dissipative Preparation of Entangled Many-Body States with Rydberg Atoms — •Maryam Roghani and Hendrik Weimer — Institut für Theoretische Physik, Leibniz Universität Hannover, Appelstraße 2, 30167 Hannover, Germany

We study a one-dimensional atomic lattice gas where interactions are mediated by a weak admixture of a Rydberg state. This Rydberg dressing is combined with dissipative dynamics induced by optical pumping. We derive an effective quantum master equation for the ground state manifold and show that this driven dissipative dynamics can result in highly entangled stationary states. For a defined set of parameters, this non-trivial entangled many-body steady state is the ground state of a Hamiltonian which possesses a manifold of approximate Rokhsar-Kivelson points. This Rokhsar-Kivelson state is a coherent superposition of all possible configurations respecting the dipole blockade induced by the Rydberg dressing [1].

[1] I. Lesanovsky, Phys. Rev. Lett. 106,025301 (2011).