Implementation of Ising-type interaction via phase stable Raman addressing in a cryogenic trapped-ion quantum simulator

ORAL

Abstract

Trapped-ion quantum simulators are great platforms to explore wide-range of many-body systems. In such a simulator, we engineer tunable long-range spin-spin interaction between the qubits encoded in the hyperfine clock state of 171Yb+, using the Molmer-Sorensen (MS) entangling gate protocol [1]. An accurate simulation of many-body systems requires extensive spatial and temporal phase coherences of MS gate protocol, typically limited by the phase fluctuations due to optical path instabilities and ions' motion [2]. We demonstrate an Ising-type interaction using Raman addressing beams, which is insensitive to such phase fluctuations. We chose appropriate laser frequencies so that the momentum transfer to the ion from the red and blue sideband transition are in opposite direction, which eliminates the dependence of the qubit's phases on optical path lengths of the driving laser fields [3]. We further characterize and compare this phase-insensitive scheme with the usual phase-sensitive implementation of the Ising-type Hamiltonian and explore the benefits and limitations of both schemes.

[1] K. Kim, M.-S. Change, R. Islam, S. Korenblit, L.-M. Duan, C. Monroe, Phys. Rev. Lett. 103 (2009)

[2] P. J. Lee, K.-A. Brickman, L. Deslauriers, P. C. Haljan, L.-M. Duan, and C. Monroe, Journal of Optics B 7, S371 (2005)

[3] I. V. Inlek, G. Vittorini, D. Hucul, C. Crocker, and C. Monroe Phys. Rev. A 90, 042316 (2014)

*This work is supported by the NSF STAQ program, the NSF QIS and Physics Frontier Center at JQI, AFOSR and ARO MURI programs, the DARPA DRINQS program, and the DOE BES and HEP programs.

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Presenters

  • Arinjoy De

    • University of Maryland, College Park
    • Joint Quantum Institute, Joint Center for Quantum Information and Computer Science, and Physics Department, University of Maryland, College Park and National Institute of Sta

Authors

  • Arinjoy De

    • University of Maryland, College Park
    • Joint Quantum Institute, Joint Center for Quantum Information and Computer Science, and Physics Department, University of Maryland, College Park and National Institute of Sta

  • Lei Feng

    • University of Maryland, College Park
    • Joint Quantum Institute and Joint Center for Quantum Information and Computer Science, University of Maryland and NIST, College Park, MD 20742 USA
    • Joint Quantum Institute, Joint Center for Quantum Information and Computer Science, and Physics Department, University of Maryland, College Park and National Institute of Sta
    • JQI and QuICS and Department of Physics, University of Maryland, College Park, MD 20742

  • Wen Lin Tan

    • University of Maryland, College Park
    • Joint Quantum Institute, Joint Center for Quantum Information and Computer Science, and Physics Department, University of Maryland, College Park and National Institute of Sta

  • Christopher R Monroe

    • JQI and QuiCS and Department of Physics, University of Maryland, College Park, MD 20742; Duke Quantum Center and Department of Physics (and ECE), Duke University, Durham, NC
    • JQI and QuICS and Department of Physics, University of Maryland, College Park, MD 20742; Duke Quantum Center and Department of Physics (and ECE), Duke University, Durham NC 2
    • University of Maryland, College Park
    • Joint Quantum Institute, University of Maryland, College Park
    • Joint Quantum Institute and Joint Center for Quantum Information and Computer Science, University of Maryland and NIST, College Park, MD 20742 USA
    • JQI, University of Maryland, College Park
    • JQI and QuICS and Department of Physics, University of Maryland, College Park, MD 20742; Duke Quantum Center and Department of Physics (and ECE), Duke University, Durham NC 27
    • Joint Quantum Institute, Joint Center for Quantum Information and Computer Science, and Physics Department, University of Maryland, College Park and National Institute of Sta