Entangling gates in trapped ions using arbitrary individual addressing and pulse shaping

ORAL

Abstract

We present progress towards quantum gates between arbitrary pairs of $^{171}$Yb$^{+}$ ions in a linear chain using individual optical addressing. A pulsed laser drives Raman transitions [1], using the beat note between frequency comb lines of counter-propagating Raman beams to couple the ion spins to the collective transverse modes of motion of the ion chain. Individual optical addressing of each ion with one Raman beam allows gates between arbitrary pairs of ions. A pulse shaping scheme is usedthat modulates the phase and amplitude of the Raman laser to drive high-fidelity entangling gates that are insensitive to detuning errors [2]. We can apply these gates programmatically to perform algorithms using concatenated operations. \\[4pt] [1] D. Hayes et. al., Phys. Rev. Lett. 104, 140501 (2010)\\[0pt] [2] T. Choi et al., Phys. Rev. Lett. 112, 19502 (2014)

*This work is supported by the ARO with funding from the IARPA MQCO program and the AFOSR MURI on Quantum Measurement and Verification.

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Authors

  • Caroline Figgatt

    • Joint Quantum Institute, University of Maryland Department of Physics and National Institute of Standards and Technology

  • Shantanu Debnath

    • Joint Quantum Institute, University of Maryland Department of Physics and National Institute of Standards and Technology

  • Norbert Linke

    • Joint Quantum Institute, University of Maryland Department of Physics and National Institute of Standards and Technology

  • Lenore Koenig

    • Joint Quantum Institute, University of Maryland Department of Physics and National Institute of Standards and Technology

  • Christopher Monroe

    • Joint Quantum Institute, University of Maryland Department of Physics and National Institute of Standards and Technology, College Park, Maryland 20742
    • Joint Quantum Institute, University of Maryland Department of Physics and National Institute of Standards and Technology
    • JQI and University of Maryland