Author： Gessner Manuel Ramm Michael Häffner Hartmut Buchleitner Andreas Breuer Heinz-Peter
Publisher： Edp Sciences
E-ISSN： 1286-4854|107|4|40005-40005
ISSN： 0295-5075
Source： EPL (EUROPHYSICS LETTERS), Vol.107, Iss.4, 2014-08, pp. : 40005-40005
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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.
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