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Optimal control for Rydberg quantum technology building blocks

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Abstract

We consider a platform for quantum technology based on Rydberg atoms in optical lattices where each atom encodes one qubit of information and external lasers can manipulate their state. We demonstrate how optimal control theory enables the functioning of two specific building blocks on this platform: We engineer an optimal protocol to perform a two-qubit phase gate and to transfer the information within the lattice among specific sites. These two elementary operations allow to design very general operations like storage of atoms and entanglement purification as, for example, needed for quantum repeaters.

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Acknowledgments

The authors acknowledge support from SFB/TRR21, Q.com, the EU project RYSQ, and we thank the bwUniCluster [52] for the computational resources.

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Authors and Affiliations

  1. LENS and Dipartimento di Fisica e Astronomia, Università di Firenze, via G. Sansone 1, 50019, Sesto Fiorentino, Italy

    Matthias M. Müller

  2. Institute for Complex Quantum Systems and Center for Integrated Quantum Science and Technology, Universität Ulm, Albert-Einstein-Allee 11, 89069, Ulm, Germany

    Matthias M. Müller, Thomas Pichler, Simone Montangero & Tommaso Calarco

Authors
  1. Matthias M. Müller
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  2. Thomas Pichler
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  3. Simone Montangero
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  4. Tommaso Calarco
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Corresponding author

Correspondence to Matthias M. Müller.

Additional information

This paper is part of the topical collection “Quantum Repeaters: From Components to Strategies” guest edited by Manfred Bayer, Christoph Becher and Peter van Loock.

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Müller, M.M., Pichler, T., Montangero, S. et al. Optimal control for Rydberg quantum technology building blocks. Appl. Phys. B 122, 104 (2016). https://doi.org/10.1007/s00340-016-6383-2

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