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arXiv 2008.13580quant-ph
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利用玻色-爱因斯坦凝聚干涉仪检验坍缩模型

Testing collapse models with Bose-Einstein-Condensate interferometry

Björn Schrinski, Philipp Haslinger, Jörg Schmiedmayer, Klaus Hornberger, Stefan Nimmrichter

AI总结:

本研究提出利用压缩态玻色-爱因斯坦凝聚原子的计数分布进行精密干涉测量,可大幅提升对连续自发定域(CSL)模型参数的探测灵敏度,有望检验并排除该模型的大量相关参数区间。

摘要:

连续自发定域(CSL)模型是量子力学最具代表性的自洽修正理论,它预言了客观的量子-经典转变。本文表明,利用玻色-爱因斯坦凝聚原子的精密干涉测量,可将当前定域速率参数的实验下界降低数个数量级。该方法的核心是关注压缩态BEC(玻色-爱因斯坦凝聚体)干涉信号中的原子计数分布,而非仅关注平均粒子数布居失衡,且无需高度纠缠的GHZ类态。实际上,CSL诱导的扩散与色散型原子间相互作用的共同作用,会提升凝聚体对CSL的灵敏度。我们讨论了利用现有最先进实验技术的现实可行测量方案,用于检验参数空间的新区域;若推至极限,还可探测并有可能排除CSL的大部分相关参数区间。

英文摘要:

The model of continuous spontaneous localization (CSL) is the most prominent consistent modification of quantum mechanics predicting an objective quantum-to-classical transition. Here we show that precision interferometry with Bose-Einstein condensed atoms can serve to lower the current empirical bound on the localization rate parameter by several orders of magnitude. This works by focusing on the atom count distributions rather than just mean population imbalances in the interferometric signal of squeezed BECs, without the need for highly entangled GHZ-like states. In fact, the interplay between CSL-induced diffusion and dispersive atom-atom interactions results in an amplified sensitivity of the condensate to CSL. We discuss experimentally realistic measurement schemes utilizing state-of-the-art experimental techniques to test new regions of parameter space and, pushed to the limit, to probe and potentially rule out large relevant parameter regimes of CSL.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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