Observing a Quantum Phase Transition by Measuring a Single Spin
Quantum Physics
2014-08-12 v2
Abstract
We show that the ground-state quantum correlations of an Ising model can be detected by monitoring the time evolution of a single spin alone, and that the critical point of a quantum phase transition is detected through a maximum of a suitably defined observable. A proposed implementation with trapped ions realizes an experimental probe of quantum phase transitions which is based on quantum correlations and scalable for large system sizes.
Cite
@article{arxiv.1403.4066,
title = {Observing a Quantum Phase Transition by Measuring a Single Spin},
author = {Manuel Gessner and Michael Ramm and Hartmut Haeffner and Andreas Buchleitner and Heinz-Peter Breuer},
journal= {arXiv preprint arXiv:1403.4066},
year = {2014}
}
Comments
5 pages, 2 figures