Experimental Quantum Simulation of Entanglement in Many-body Systems

Details Experimental Quantum Simulation of Entanglement in Many-body Systems Experimental Quantum Simulation of Entanglement in Many-body Systems

2011-04-01

arxiv.org/abs/1104.0275v2

Phys. Rev. Lett. 107, 010501 (2011)

Physics

Quantum Physics

Scientific paper

10.1103/PhysRevLett.107.010501

We employ a nuclear magnetic resonance (NMR) quantum information processor to simulate the ground state of an XXZ spin chain and measure its NMR analog of entanglement, or pseudo-entanglement. The observed pseudo-entanglement for a small-size system already displays singularity, a signature which is qualitatively similar to that in the thermodynamical limit across quantum phase transitions, including an infinite-order critical point. The experimental results illustrate a successful approach to investigate quantum correlations in many-body systems using quantum simulators.

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