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RIKEN Center for Emergent Matter Science Quantum System Theory Research Team

Team Leader: Daniel Loss (Ph.D.)

Research Summary

Daniel  Loss(Ph.D.)

Quantum System Theory Research Team is working on the quantum theory of condensed matter with a focus on spin and phase coherent phenomena in semiconducting and magnetic nanostructures. In particular, the team investigates the fundamental principles of quantum information processing in the solid state with a focus on spin qubits, superconducting qubits, and Majorana fermions. This involves the study of decoherence in many-body systems and scalable quantum computing architectures based on surface codes and long-distance entanglement schemes. The group also studies nuclear spin phases and many-body effects in low-dimensional systems with spin orbit interaction, and quantum transport of magnetization.

Main Research Fields

  • Mathematical & Physical Sciences

Related Research Fields

  • Engineering

Keywords

  • solid state physics
  • semiconducting nanostructures
  • quantum computing
  • topological quantum effects
  • spintronics

Selected Publications

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

  • 1.* D. Loss and D.P. DiVincenzo:
    "Quantum computation with quantum dots"
    Phys. Rev. A 57, 120 (1998)
  • 2.* M.N. Leuenberger and D. Loss:
    "Quantum computing in molecular magnets"
    Nature 410, 789 (2001)
  • 3.* B. Coish and D. Loss:
    "Hyperfine interaction in a quantum dot: Non-Markovian electron spin dynamics"
    Phys. Rev. B 70, 195340 (2004)
  • 4.* P. Recher, E.V. Sukhorukov, and D. Loss:
    "Andreev-Tunneling, Coulomb Blockade, and Resonant Transport of Non-Local Spin-Entangled Electrons"
    Phys. Rev. B 63, 165314 (2001)
  • 5.* J. Klinovaja, P. Stano, A. Yazdani, and D. Loss:
    "Topological Superconductivity and Majorana Fermions in RKKY Systems"
    Phys. Rev. Lett. 111, 186805 (2013)
  • 6.S. Chesi, Y.-D. Wang, J. Yoneda, T. Otsuka, S. Tarucha, and D. Loss:
    "Single-spin manipulation in a double quantum dot in the field of a micromagnet"
    Phys. Rev. B 90, 235311 (2014)
  • 7.S. Chesi, L.-P. Yang, and D. Loss,
    "Dephasing due to nuclear spins in large-amplitude electric dipole spin resonance",
    Phys. Rev. Lett. 116, 066806 (2016)
  • 8.G. Yang, P. Stano, J. Klinovaja, D. Loss,
    "Majorana bound states in magnetic skyrmions",
    Phys. Rev. B 93, 224505 (2016)
  • 9.J.-H. Park, G. Yang, J. Klinovaja, P. Stano, D. Loss,
    "Fractional boundary charges in quantum dot arrays with density modulation",
    Phys. Rev. B 94 , 075416 (2016)
  • 10.G. Yang, Ch.-H. Hsu, P. Stano, J. Klinovaja, D. Loss,
    "Long-Distance Entanglement of Spin Qubits via Quantum Hall Edge States",
    Phys. Rev. B 93, 075301 (2016)

Recent Research Results

Related Links

Lab Members

Principal investigator

Daniel Loss
Team Leader

Core members

Peter Stano
Senior Scientist
Kazuki Nakazawa
Research Scientist
Nicolas Fleury
Student Trainee
Maria Spethmann
Intern

Contact Information

2-1 Hirosawa, Wako, Saitama
351-0198 Japan
Email: loss.daniel [at] riken.jp

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