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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