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Exploiting quantum parallelism to simulate quantum random many-body systems

Paredes, B. and Verstraete, F. and Cirac, J. I. (2005) Exploiting quantum parallelism to simulate quantum random many-body systems. Physical Review Letters, 95 (14). Art. No. 140501. ISSN 0031-9007. http://resolver.caltech.edu/CaltechAUTHORS:PARprl05

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Abstract

We present an algorithm that exploits quantum parallelism to simulate randomness in a quantum system. In our scheme, all possible realizations of the random parameters are encoded quantum mechanically in a superposition state of an auxiliary system. We show how our algorithm allows for the efficient simulation of dynamics of quantum random spin chains with known numerical methods. We propose an experimental realization based on atoms in optical lattices in which disorder could be simulated in parallel and in a controlled way through the interaction with another atomic species.


Item Type:Article
Additional Information:©2005 The American Physical Society. Received 20 May 2005; published 29 September 2005. We thank M. A. Martin-Delgado for helpful discussions and the KITP, where this work was started. Work is supported in part by DFG, EU projects, and Bayerische Staatsregierung.
Subject Keywords:DENSITY-MATRIX RENORMALIZATION; ULTRACOLD ATOMS; TRANSITION; SUPERFLUID; INSULATOR; GAS
Record Number:CaltechAUTHORS:PARprl05
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:PARprl05
Alternative URL:http://dx.doi.org/10.1103/PhysRevLett.95.140501
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:2988
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:10 May 2006
Last Modified:18 Sep 2014 18:11

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