Spin-squeezed states are a resource for quantum-enhanced precision measurement. However, the theoretical foundations for scalable spin squeezing — where quantum enhancement grows with system size — have only been established for systems exhibiting all-to-all interactions. Now, by unveiling a connection to finite-temperature magnetism, scalable squeezing is extended to locally interacting systems.
This is a preview of subscription content, access via your institution
Access options
Access Nature and 54 other Nature Portfolio journals
Get Nature+, our best-value online-access subscription
$29.99 / 30 days
cancel any time
Subscribe to this journal
Receive 12 print issues and online access
$259.00 per year
only $21.58 per issue
Buy this article
- Purchase on SpringerLink
- Instant access to full article PDF
Prices may be subject to local taxes which are calculated during checkout
References
Kitagawa, M. & Ueda, M. Squeezed spin states. Phys. Rev. A 47, 5138–5143 (1993). This paper introduces the concept of spin squeezing and analyses it in all-to-all coupled models.
Perlin, M. A., Qu, C. & Rey, A. M. Spin squeezing with short-range spin-exchange interactions. Phys. Rev. Lett. 125, 223401 (2020). This paper presents a numerical investigation of spin-squeezing in XXZ spin models, indicating strong squeezing in certain parameter regimes.
Comparin, T., Mezzacapo, F. & Roscilde, T. Robust spin squeezing from the tower of states of U(1)-symmetric spin Hamiltonians. Phys. Rev. A 105, 022625 (2022). This paper suggests a connection between robust spin squeezing and U(1) symmetry breaking using the ground-state Anderson tower.
Hohenberg, P. C. & Halperin, B. I. Theory of dynamic critical phenomena. Rev. Mod. Phys. 49, 435–479 (1977). This review article explores hydrodynamics for easy-plane magnets.
Bornet, G. et al. Scalable spin squeezing in a dipolar Rydberg atom array. Nature 621, 728–733 (2023). This paper records an experimental demonstration of scalable squeezing with up to 100 atoms in a Rydberg atom tweezer array.
Additional information
Publisher’s note Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.
This is a summary of: Block, M. et al. Scalable spin squeezing from finite-temperature easy-plane magnetism. Nat. Phys. https://doi.org/10.1038/s41567-024-02562-5 (2024).
Rights and permissions
About this article
Cite this article
Scalable spin squeezing with local interactions. Nat. Phys. (2024). https://doi.org/10.1038/s41567-024-02563-4
Published:
DOI: https://doi.org/10.1038/s41567-024-02563-4
