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Effect of the Time Delay between Spin State Preparation and Measurement on Electron Spin Teleportation in a Covalent Donor–Acceptor–Radical System

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    Physical Insights into Quantum Phenomena and Function

    Effect of the Time Delay between Spin State Preparation and Measurement on Electron Spin Teleportation in a Covalent Donor–Acceptor–Radical System
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    • Laura Bancroft
      Laura Bancroft
      Department of Chemistry, Center for Molecular Quantum Transduction, and Institute for Sustainability and Energy at Northwestern, Northwestern University, Evanston, Illinois 60208-3113, United States
      More by Laura Bancroft
      Orcidhttps://orcid.org/0000-0002-4312-9758
    • Yunfan Qiu
      Yunfan Qiu
      Department of Chemistry, Center for Molecular Quantum Transduction, and Institute for Sustainability and Energy at Northwestern, Northwestern University, Evanston, Illinois 60208-3113, United States
      More by Yunfan Qiu
    • Matthew D. Krzyaniak*
      Matthew D. Krzyaniak
      Department of Chemistry, Center for Molecular Quantum Transduction, and Institute for Sustainability and Energy at Northwestern, Northwestern University, Evanston, Illinois 60208-3113, United States
      *Email: [email protected]
      More by Matthew D. Krzyaniak
      Orcidhttps://orcid.org/0000-0002-8761-7323
    • Michael R. Wasielewski*
      Michael R. Wasielewski
      Department of Chemistry, Center for Molecular Quantum Transduction, and Institute for Sustainability and Energy at Northwestern, Northwestern University, Evanston, Illinois 60208-3113, United States
      *Email: [email protected]
      More by Michael R. Wasielewski
      Orcidhttps://orcid.org/0000-0003-2920-5440
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    The Journal of Physical Chemistry Letters

    Cite this: J. Phys. Chem. Lett. 2022, 13, 1, 156–160
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    https://doi.org/10.1021/acs.jpclett.1c03780
    Published December 28, 2021
    Copyright © 2021 American Chemical Society
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    Abstract

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    We recently demonstrated photodriven quantum teleportation of an electron spin state in a covalent donor–acceptor–radical (D–A–R•) system. Following specific spin state preparation on R• with a microwave pulse, photoexcitation of A results in two-step electron transfer producing D•+–A–R–, where the spin state on R• is teleported to D•+. This study examines the effects of varying the time (τD) between spin state preparation and photoinitiated teleportation. Using pulse electron paramagnetic resonance spectroscopy, the spin echo of D•+ resulting from teleportation shows a damped oscillation as a function of τD that is simulated using a density matrix model, which provides a fundamental understanding of the echo behavior. Teleportation fidelity calculations also show oscillatory behavior as a function of τD due to the accumulation of a phase factor between ⟨Sx⟩ and ⟨Sy⟩. Understanding experimental parameters intrinsic to quantum teleportation in molecular systems is crucial to leveraging this phenomenon for quantum information applications.

    Copyright © 2021 American Chemical Society

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    Supporting Information

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    The Supporting Information is available free of charge at https://pubs.acs.org/doi/10.1021/acs.jpclett.1c03780.

    • Additional data and processing details about the teleportation laser experiments, simulations, and fidelity calculations and experimental instrument parameters for each data set (PDF)

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    This article is cited by 2 publications.

    1. Yuheng Huang, Yunfan Qiu, Ryan M. Young, George C. Schatz, Matthew D. Krzyaniak, Michael R. Wasielewski. Identifying Sources of Entanglement Loss in Photodriven Molecular Electron Spin Teleportation. Journal of the American Chemical Society 2024, 146 (29) , 20133-20140. https://doi.org/10.1021/jacs.4c04393
    2. Jasleen K. Bindra, Jens Niklas, Yeonjun Jeong, Ahren W. Jasper, Lisa M. Utschig, Oleg G. Poluektov. Light-induced electron spin qubit coherences in the purple bacteria reaction center protein. Physical Chemistry Chemical Physics 2025, 4 https://doi.org/10.1039/D4CP03971H
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    The Journal of Physical Chemistry Letters

    Cite this: J. Phys. Chem. Lett. 2022, 13, 1, 156–160
    Click to copy citationCitation copied!
    https://doi.org/10.1021/acs.jpclett.1c03780
    Published December 28, 2021
    Copyright © 2021 American Chemical Society
    Request reuse permissions

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