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Nuclear spin-wave quantum register for a solid-state qubit

Ruskuc, Andrei and Wu, Chun-Ju and Rochman, Jake and Choi, Joonhee and Faraon, Andrei (2022) Nuclear spin-wave quantum register for a solid-state qubit. Nature, 602 (7897). pp. 408-413. ISSN 0028-0836. doi:10.1038/s41586-021-04293-6. https://resolver.caltech.edu/CaltechAUTHORS:20210917-222630119

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Abstract

Solid-state nuclear spins surrounding individual, optically addressable qubits are a crucial resource for quantum networks, computation and simulation. Although hosts with sparse nuclear spin baths are typically chosen to mitigate qubit decoherence, developing coherent quantum systems in nuclear-spin-rich hosts enables exploration of a much broader range of materials for quantum information applications. The collective modes of these dense nuclear spin ensembles provide a natural basis for quantum storage; however, using them as a resource for single-spin qubits has thus far remained elusive. Here, by using a highly coherent, optically addressed ¹⁷¹Yb³⁺ qubit doped into a nuclear-spin-rich yttrium orthovanadate crystal, we develop a robust quantum control protocol to manipulate the multi-level nuclear spin states of neighbouring ⁵¹V⁵⁺ lattice ions. Via a dynamically engineered spin-exchange interaction, we polarize this nuclear spin ensemble, generate collective spin excitations, and subsequently use them to implement a quantum memory. We additionally demonstrate preparation and measurement of maximally entangled ¹⁷¹Yb–⁵¹V Bell states. Unlike conventional, disordered nuclear-spin-based quantum memories, our platform is deterministic and reproducible, ensuring identical quantum registers for all ¹⁷¹Yb³⁺ qubits. Our approach provides a framework for utilizing the complex structure of dense nuclear spin baths, paving the way towards building large-scale quantum networks using single rare-earth ion qubits.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://doi.org/10.1038/s41586-021-04293-6DOIArticle
https://arxiv.org/abs/2108.12723arXivDiscussion Paper
https://rdcu.be/cG9ltPublisherFree ReadCube access
ORCID:
AuthorORCID
Ruskuc, Andrei0000-0001-7684-7409
Faraon, Andrei0000-0002-8141-391X
Additional Information:© 2022 Springer Nature Limited. Received 29 August 2021. Accepted 29 November 2021. Published 16 February 2022. Issue Date 17 February 2022. This work was funded by the Institute of Quantum Information and Matter, an NSF Physics Frontiers Center (PHY-1733907) with support from the Moore Foundation, NSF 1820790, Office of Naval Research award no. N00014-19-1-2182, Air Force Office of Scientific Research grant no. FA9550-18-1-0374 and no. FA9550-21-1-0055, Northrop Grumman, General Atomics, and Weston Havens Foundation. The device nanofabrication was performed in the Kavli Nanoscience Institute at the California Institute of Technology. J.R. acknowledges the support from the Natural Sciences and Engineering Research Council of Canada (NSERC) (PGSD3-502844-2017). A.R. acknowledges the support from the Eddleman Graduate Fellowship. J.C. acknowledges support from the IQIM postdoctoral fellowship. We thank J. Kindem, J. G. Bartholomew, N. Yao, A. Sipahigil, M. Lei and T. Xie for discussion, and M. Shaw for help with superconducting photon detectors. Data availability. The data that support the findings of this study are available from the corresponding authors upon request. Contributions. A.R., J.C. and A.F. conceived the experiments. J.R. fabricated the device. A.R. and C.-J.W. performed the experiments and analysed the data. A.R. and J.C. designed the control sequences. A.R., J.C. and A.F. wrote the manuscript with input from all authors. J.C. and A.F. supervised the project. The authors declare no competing interests. Peer review information. Nature thanks Fedor Jelezko and the other, anonymous, reviewer(s) for their contribution to the peer review of this work. Peer reviewer reports are available.
Group:Kavli Nanoscience Institute, Institute for Quantum Information and Matter
Funders:
Funding AgencyGrant Number
NSFPHY-1733907
Gordon and Betty Moore FoundationUNSPECIFIED
NSFPHY-1820790
Office of Naval Research (ONR)N00014-19-1-2182
Air Force Office of Scientific Research (AFOSR)FA9550-18-1-0374
Air Force Office of Scientific Research (AFOSR)FA9550-21-1-0055
Northrop Grumman CorporationUNSPECIFIED
General AtomicsUNSPECIFIED
Weston Havens FoundationUNSPECIFIED
Natural Sciences and Engineering Research Council of Canada (NSERC)PGSD3-502844-2017
Eddleman FellowshipUNSPECIFIED
Institute for Quantum Information and Matter (IQIM)UNSPECIFIED
Subject Keywords:Quantum information; Quantum optics; Qubits; Single photons and quantum effects
Issue or Number:7897
DOI:10.1038/s41586-021-04293-6
Record Number:CaltechAUTHORS:20210917-222630119
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20210917-222630119
Official Citation:Ruskuc, A., Wu, CJ., Rochman, J. et al. Nuclear spin-wave quantum register for a solid-state qubit. Nature 602, 408–413 (2022). https://doi.org/10.1038/s41586-021-04293-6
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:110955
Collection:CaltechAUTHORS
Deposited By: George Porter
Deposited On:17 Sep 2021 22:44
Last Modified:17 Mar 2022 15:51

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