Dynamical quantum phase transitions in a silicon spin qubit array

ORAL

Abstract

In the quest towards a large-scale quantum computer, spin qubits in semiconductor quantum dots are showing increasing maturity. In a recent publication, our group introduced new methods for initializing, controlling, and measuring spin qubits in a six-dot array demonstrating operation with a low error rate [1]. Using these methods and efficient calibration routines, we can tune our six-qubit array to a regime with high controllability of the Heisenberg exchange interaction between neighbouring qubits. Such an arrangement allows us to operate the qubit array as a digital quantum simulator and study a dynamical quantum phase transition (DQPT) in a 1D Ising chain, as previously studied in a trapped-ion analogue quantum simulator [2]. In addition, insights made by the programming of such DQPT algorithms help us further optimize the operation of our single and two-qubit gates.

[1] Philips, S.G.J., Madzik, M.T., et al., Nature 609, 919-924 (2022)

[2] Jurcevic, P., et al., Physical review letters 119.8 (2017): 080501.

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Presenters

  • Eline Raymenants

    • QuTech and the Kavli Institute of Nanoscience, Delft University of Technology
    • QuTech

Authors

  • Eline Raymenants

    • QuTech and the Kavli Institute of Nanoscience, Delft University of Technology
    • QuTech

  • Oriol Pietx-Casas

    • QuTech and the Kavli Institute of Nanoscience, Delft University of Technology
    • QuTech

  • Brennan Undseth

    • QuTech, TU Delft
    • QuTech

  • Stephan G Philips

    • QuTech and the Kavli Institute of Nanoscience, Delft University of Technology
    • Delft University of Technology

  • Mateusz T Madzik

    • Delft University of Technology
    • QuTech and the Kavli Institute of Nanoscience, Delft University of Technology
    • Intel
    • University of New South Wales
    • QuTech

  • Sergey V Amitonov

    • TNO, Qutech
    • QuTech and TNO, Stieltjesweg 1, 2628 CK Delft, The Netherlands
    • QuTech and Netherlands Organization for Applied Scientific Research (TNO), Delft, The Netherlands
    • TNO, QuTech
    • TNO
    • TNO/QuTech

  • Larysa Tryputen

    • TNO, Qutech
    • Netherlands Organisation for Applied Scientific Research (TNO)
    • QuTech and Netherlands Organization for Applied Scientific Research (TNO), Delft, The Netherlands
    • TNO
    • TNO/QuTech
    • TNO Netherlands Organization for Applied Scientific Research

  • Amir Sammak

    • TNO, Qutech
    • QuTech and TNO, Stieltjesweg 1, 2628 CK Delft, The Netherlands
    • Netherlands Organisation for Applied Scientific Research (TNO)
    • QuTech and Netherlands Organization for Applied Scientific Research (TNO), Delft, The Netherlands
    • TNO, QuTech
    • TNO
    • Netherlands Organization for Applied Scientific Research (TNO)
    • QuTech and Netherlands Organisation for Applied Scientific Research (TNO), Stieltjesweg 1, 2628 CK Delft, The Netherlands
    • TNO/QuTech

  • Albert T Schmitz

    • Intel Corporation, Hillsboro

  • Shavindra P Premaratne

    • Intel Corporation
    • Intel Corporation, Hillsboro

  • Anne Y Matsuura

    • Intel Corporation, Hillsboro
    • Intel Corporation, Santa Clara
    • Intel Corporation

  • Giordano Scappucci

    • QuTech and Kavli Institute of Nanoscience, TU Delft, P.O. Box 5046, 2600 GA Delft, The Netherlands
    • Delft University of Technology
    • QuTech and the Kavli Institute of Nanoscience, Delft University of Technology
    • TU Delft QuTech
    • QuTech and Kavli Institute of Nanoscience, Delft University of Technology, P.O. Box 5046, 2600 GA Delft, The Netherlands

  • Lieven M Vandersypen

    • Delft University of Technology
    • QuTech and the Kavli Institute of Nanoscience, Delft University of Technology