AI 中文总结
本研究基于碱金属与惰性气体系综的相干自旋交换相互作用，提出一种可高效制备操控超长寿命核自旋压缩的方案，该方案易实现且适配性高，将推动核自旋非经典态的相关研究与应用。
AI 中文摘要
与环境隔离使惰性气体核自旋的寿命长达数天，但也给核自旋量子态的制备、操控和测量带来巨大挑战。本研究发现，可基于碱金属与惰性气体系综间的相干自旋交换相互作用，高效获取和操控具有超长寿命与巨量原子数的核自旋压缩。得益于该方案在制备巨量原子数宏观原子系综自旋压缩方面的显著优势，利用现有技术甚至可获得包含10^20个或更多原子的核自旋压缩态。此外，通过磁场的相干操控，可实现核自旋压缩的数天存储与测量。该方案可在热原子系综中实现，其易获取性和对各类环境的高适应性，将极大推动核自旋非经典态在精密测量、量子信息和基础物理领域的研究与应用。
英文摘要
Isolation from environment leads to the days-long lifetime of noble-gas nuclear spins, but also brings great challenges to the preparation, manipulation, and measurement of nuclear-spin quantum states. Here we find that nuclear spin squeezing, with ultra-long lifetime and huge atomic number, can be efficiently obtained and manipulated based on the coherent spin-exchange interaction between alkali-metal and noble-gas ensembles. Thanks to the considerable advantage of our proposal in preparing the spin squeezing of the macroscopic atomic ensemble with a huge atomic number, even the nuclear spin-squeezed state containing 10^20 atoms or more is obtainable with preexisting techniques. Further, the days-long storage and measurement of nuclear spin squeezing can be performed by the coherent manipulation of a magnetic field. This proposal can be implemented in hot atomic ensembles, whose ease of access and high adaptability to various environments will significantly facilitate the research and application of nuclear-spin nonclassical states in precision measurement, quantum information, and fundamental physics.
Comments11 pages, 7 figures
Journal refPhys.Rev.A 114,013725 (2026)
