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Exploiting Quantum Effects in Electron-Nuclear Coupled Molecular Spin Systems

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Electron Spin Resonance (ESR) Based Quantum Computing

Part of the book series: Biological Magnetic Resonance ((BIMR,volume 31))

Abstract

Molecular spin systems coupled with nuclear spins are introduced as promising matter spin qubits in quantum information processing and quantum computing (QC). Introductory remarks are given for nonspecialists. For this purpose, NMR-based QC is described and an approach to QC exploiting electron-nuclear coupled molecular systems is given. Requisites for qubits are described as DiVincenzo’s criteria. Since Shor’s quantum algorithm appeared, the first successful QC experiment was carried out by highly sophisticated pulsed NMR techniques, and this very attempt brought quantum computers down to earth. It has been claimed, nevertheless, that quantum entanglement as the heart of QC has not been established in any experiments in solution. Thus, advantages of QC experiments with molecular spins over the counterparts of NMR QC are described. Quantum computing (QC) experiments with molecular spins are exemplified for a few qubits.

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Acknowledgments

We thank Prof. Lawrence Berliner for proofreading the manuscript. We have appreciated the synthetic work on DPNOs by Shinsuke Nishida and Yasushi Morita, Osaka University. This work has been supported by Grants-in-Aid for Scientific Research on Innovative Areas “Quantum Cybernetics” and Scientific Research (B) from MEXT, Japan. The support for the present work by the FIRST project on “Quantum Information Processing” from JSPS, Japan and by the AOARD project on “Quantum Properties of Molecular Nanomagnets” (Award No. FA2386-13-1-4030) is also acknowledged. RRD would like to thank Howard Halpern and members of the Center for EPR Imaging in Vivo Physiology, for warm hospitality while the last stage of this work was conducted.

Author information

Authors and Affiliations

  1. Institute for Quantum Computing, University of Waterloo, 200 University Avenue West, Waterloo, ON, Canada, N2L 3G1

    Robabeh Rahimi Darabad, Kazunobu Sato & Raymond Laflamme

  2. Department of Physics, Science and Research Branch of Azad University, University Sq., Tehran, Iran

    Robabeh Rahimi Darabad

  3. Departments of Chemistry and Molecular Materials Science, Graduate School of Science, Osaka City University, Sumiyoshi-ku, Osaka, 558-8585, Japan

    Robabeh Rahimi Darabad & Takeji Takui

  4. Bruker BioSpin GmbH, Silberstreifen 4, Rheinstetten, 76287, Germany

    Patrick Carl & Peter Höfer

  5. Department of Physics, University of Waterloo, 200 University Avenue West, Waterloo, ON, Canada, N2L 3G1

    Raymond Laflamme

  6. Perimeter Institute, 31 Caroline Street North, Waterloo, ON, Canada, N2L 2Y5

    Raymond Laflamme

Authors
  1. Robabeh Rahimi Darabad
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  2. Kazunobu Sato
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  3. Patrick Carl
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  4. Peter Höfer
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  5. Raymond Laflamme
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  6. Takeji Takui
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Corresponding author

Correspondence to Robabeh Rahimi Darabad .

Editor information

Editors and Affiliations

  1. Department of Chemistry, Osaka City University Grad School Science, Osaka, Japan

    Takeji Takui

  2. Department of Chemistry and Biochemistry, University of Denver, Denver, Colorado, USA

    Lawrence Berliner

  3. Centre for Advanced Imaging, The University of Queensland, St. Lucia, Queensland, Australia

    Graeme Hanson

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Darabad, R.R., Sato, K., Carl, P., Höfer, P., Laflamme, R., Takui, T. (2016). Exploiting Quantum Effects in Electron-Nuclear Coupled Molecular Spin Systems. In: Takui, T., Berliner, L., Hanson, G. (eds) Electron Spin Resonance (ESR) Based Quantum Computing. Biological Magnetic Resonance, vol 31. Springer, New York, NY. https://doi.org/10.1007/978-1-4939-3658-8_2

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