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Experimental Realization of a Compressed Quantum Simulation of a 32-Spin Ising Chain

Zhaokai Li, Hui Zhou, Chenyong Ju, Hongwei Chen, Wenqiang Zheng, Dawei Lu, Xing Rong, Changkui Duan, Xinhua Peng, and Jiangfeng Du
Phys. Rev. Lett. 112, 220501 – Published 2 June 2014
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Abstract

Certain n-qubit quantum systems can be faithfully simulated by quantum circuits with only O(log(n)) qubits [B. Kraus, Phys. Rev. Lett. 107, 250503 (2011)]. Here we report an experimental realization of this compressed quantum simulation on a one-dimensional Ising chain. By utilizing an nuclear magnetic resonance quantum simulator with only five qubits, the property of ground-state magnetization of an open-boundary 32-spin Ising model is experimentally simulated, prefacing the expected quantum phase transition in the thermodynamic limit. This experimental protocol can be straightforwardly extended to systems with hundreds of spins by compressing them into up to merely 10-qubit systems. Our experiment paves the way for exploring physical phenomena in large-scale quantum systems with quantum simulators under current technology.

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  • Received 13 February 2014

DOI:https://doi.org/10.1103/PhysRevLett.112.220501

© 2014 American Physical Society

Authors & Affiliations

Zhaokai Li1, Hui Zhou1, Chenyong Ju1,2,*, Hongwei Chen3, Wenqiang Zheng1, Dawei Lu4, Xing Rong1,2, Changkui Duan1,2, Xinhua Peng1,2,†, and Jiangfeng Du1,2,‡

  • 1Hefei National Laboratory for Physical Sciences at Microscale and Department of Modern Physics, University of Science and Technology of China, Hefei, Anhui 230036, People’s Republic of China
  • 2Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei, Anhui 230026, People’s Republic of China
  • 3High Magnetic Field Laboratory, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, Peoples Republic of China
  • 4Institute for Quantum Computing and Department of Physics and Astronomy, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada

  • *cyju@ustc.edu.cn
  • xhpeng@ustc.edu.cn
  • djf@ustc.edu.cn

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Issue

Vol. 112, Iss. 22 — 6 June 2014

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