Variational generation of spin squeezing on one-dimensional quantum devices with nearest-neighbor interactions

Efficient preparation of spin-squeezed states is important for quantum-enhanced metrology. Current protocols for generating strong spin squeezing rely on either high dimensionality or long-range interactions. A key challenge is how to generate considerable spin squeezing in one-dimensional systems w...

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Bibliographic Details
Published inarXiv.org
Main Authors Zheng-Hang, Sun, Yong-Yi, Wang, Yu-Ran, Zhang, Nori, Franco, Fan, Heng
Format Paper Journal Article
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 26.12.2023
Subjects
Algorithms
Analog circuits
Compressing
Optimization
Physics - Quantum Physics
Quantum computers
Squeezed states (quantum theory)
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Summary:Efficient preparation of spin-squeezed states is important for quantum-enhanced metrology. Current protocols for generating strong spin squeezing rely on either high dimensionality or long-range interactions. A key challenge is how to generate considerable spin squeezing in one-dimensional systems with only nearest-neighbor interactions. Here, we develop variational spin-squeezing algorithms to solve this problem. We consider both digital and analog quantum circuits for these variational algorithms. After the closed optimization loop of the variational spin-squeezing algorithms, the generated squeezing can be comparable to the strongest squeezing created from two-axis twisting. By analyzing the experimental imperfections, the variational spin-squeezing algorithms proposed in this work are feasible in recent developed noisy intermediate-scale quantum computers.
ISSN:2331-8422
DOI:10.48550/arxiv.2306.16194