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RIKEN Center for Quantum Computing Floating-Electron-Based Quantum Information RIKEN Hakubi Research Team

RIKEN Hakubi Team Leader: Erika Kawakami (Ph.D.)

Research Summary

Erika Kawakami (Ph.D.)

Our team is working on the application of electrons floating on liquid helium to quantum information. This physical system has a high potential for providing an ideal platform on which to realize a quantum computer, due to the fact that it is free of impurities and defects. We are also working on the technological development required for large-scale quantum computation.

Main Research Fields

  • Engineering

Related Research Fields

  • Interdisciplinary Science & Engineering
  • Mathematical & Physical Sciences
  • Applied physics
  • Nano/Micro science
  • Electrical and electronic engineering

Keywords

  • low-temperature physics
  • quantum computer
  • quantum bit
  • two-dimensional electron system
  • helium

Selected Publications

Papers with an asterisk(*) are based on research conducted outside of RIKEN.

  • 1. *E. Kawakami, A. Elarabi, and D. Konstantinov.:
    "Relaxation of the excited Rydberg States of Surface Electrons on Liquid Helium"
    Physical Review Letters, 126, 106802 (2021).
  • 2. *A. Elarabi, E. Kawakami, and D. Konstantinov
    "Cryogenic amplification of image-charge detection for readout of quantum states of electrons on liquid helium"
    Journal of Low Temperature Physics volume 202, 456 (2021).
  • 3. *E. Kawakami, A. Elarabi, D. Konstantinov.:
    "Image-charge detection of the Rydberg states of surface electrons on liquid helium"
    Physical Review Letters with Editors’ Suggestion, 123, 086801 (2019).
  • 4. *J.P.G. van Dijk, E. Kawakami, R.N. Schouten, M. Veldhorst, L.M.K. Vandersypen, M. Babaie, E. Charbon, and F. Sebastiano.:
    "The impact of classical control electronics on qubit fidelity"
    Physical Review Applied, 12, 044054 (2019).
  • 5. *T. F. Watson, S. G. J. Philips, E. Kawakami, D. R. Ward, P. Scarlino, M. Veldhorst, D. E. Savage, M. G. Lagally, Mark Friesen, S. N. Coppersmith, M. A. Eriksson & L. M. K. Vandersypen.:
    "A programmable two-qubit quantum processor in silicon"
    Nature 555, 633 (2018).
  • 6. *E. Kawakami, T. Jullien, P. Scarlino, D. R. Ward, D. E. Savage, M. G. Lagally, Viatcheslav Dobrovitski, Mark Friesen, S. N. Coppersmith, M. A. Eriksson, and L. M. K. Vandersypen.:
    "Gate fidelity and coherence of an electron spin in a Si/SiGe quantum dot with micromagnet"
    Proceedings of the National Academy of Sciences of the United States of America 113, 42, 11738 (2016).
  • 7. *P. Scarlino, E. Kawakami, D. R. Ward, D. E. Savage, M. G. Lagally, Mark Friesen, S. N. Coppersmith, M. A. Eriksson and L. M. K. Vandersypen.:
    "Second harmonic coherent driving of a spin qubit in Si/SiGe single quantum dot"
    Physical Review Letters 115, 106802 (2015).
  • 8. *E. Kawakami, P. Scarlino, D. R. Ward, F. R. Braakman, D. E. Savage, M. G. Lagally, Mark Friesen, S. N. Coppersmith, M. A. Eriksson, and L. M. K. Vandersypen.:
    "Electrical control of a long-lived spin qubit in a Si/SiGe quantum dot"
    Nature Nanotechnology 9, 666-670 (2014).
  • 9. *P. Scarlino, E. Kawakami, P. Stano, M. Shafiei, C. Reichl, W. Wegscheider, L. M. K. Vandersypen.:
    "Spin relaxation anisotropy in a GaAs quantum dot"
    Physical Review Letters with Editors’ Suggestion, 113, 256802 (2014).
  • 10. *E. Kawakami, P. Scarlino, L. R. Schreiber, J. R. Prance, D. E. Savage, M. G. Lagally, M. A. Eriksson, L. M. K. Vandersypen.:
    "Excitation of a Si/SiGe quantum dot using an on-chip microwave antenna"
    Applied Physics Letters 103, 132410 (2013).

Related Links

Lab Members

Principal investigator

Erika Kawakami
RIKEN Hakubi Team Leader

Core members

Ivan Grytsenko
Technical Scientist
Asher Curtis JENNINGS
Postdoctoral Researcher
Hiromi Ito
Technical Staff I

Careers

Position Deadline
Seeking a Research Part-time Worker Ⅰ or Ⅱ (W22035) Open until filled
Seeking a Technical Staff I or II (W21183) Open until filled

Contact Information

Email: erika.kawakami [at] riken.jp

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