12.30.+u Universal quantum simulators with specific systems (e.g. trapped ions, optical lattices, etc.)

A Rydberg quantum simulator

Date: 
2010-03-14
Author(s): 

H. Weimer, M. Müller, I. Lesanovsky, P. Zoller, H. P. Büchler

Reference: 

Nature Phys. 6, 382 (2010)

A universal quantum simulator is a controlled quantum device that reproduces the dynamics of any other many-particle quantum system with short-range interactions. This dynamics can refer to both coherent Hamiltonian and dissipative open-system evolution. Here we propose that laser-excited Rydberg atoms in large-spacing optical or magnetic lattices provide an efficient implementation of a universal quantum simulator for spin models involving n-body interactions, including such of higher order.

An open system quantum simulator with trapped ions

Date: 
2011-02-23
Author(s): 

J.T. Barreiro, M. Müller, P. Schnindler, D. Nigg, T. Monz, M. chwalla, M. Hennrich, C.F. Roos, P. Zoller, R. Blatt

Reference: 

Nature 470, 486 (2011)

The control of quantum systems is of fundamental scientific interest and promises powerful applications and technologies. Impressive progress has been achieved in isolating quantum systems from the environment and coherently controlling their dynamics, as demonstrated by the creation and manipulation of entanglement in various physical systems. However, for open quantum systems, engineering the dynamics of many particles by a controlled coupling to an environment remains largely unexplored.

Emerging bosons with three-body interactions from spin-1 atoms in optical lattices

Date: 
2010-10-27
Reference: 

L. Mazza, M. Rizzi, M. Lewenstein, and J. I. Cirac
Phys. Rev. A 82, 043629 (2010) http://link.aps.org/doi/10.1103/PhysRevA.82.043629

We study two many-body systems of bosons interacting via an infinite three-body contact repulsion in a lattice: a pairs quasicondensate induced by correlated hopping and the discrete version of the Pfaffian wave function. We propose to experimentally realize systems characterized by such interaction by means of a proper spin-1 lattice Hamiltonian: spin degrees of freedom are locally mapped into occupation numbers of emerging bosons, in a fashion similar to spin-1/2 and hardcore bosons. Such a system can be realized with ultracold spin-1 atoms in a Mott insulator with a filling factor of 1.

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