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arXiv 2411.09596gr-qccond-mat.quant-gas
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走向在BEC类比膨胀宇宙中观测纠缠对

Toward the Observation of Entangled Pairs in BEC analogue Expanding Universes

Ivan Agullo, Adrià Delhom, Álvaro Parra-López

AI总结:

本文量化二维BEC类比膨胀宇宙中粒子对产生导致的纠缠,评估实验可行性,证明在现有及改进配置下可分别以约2σ和≥3.3σ显著性观测到纠缠,为弯曲时空量子场论预言提供量子证据。

摘要:

粒子对的产生是弯曲时空量子场论的一个基本预言。虽然这一现象的经典方面已被观测到,但其量子起源的实验确认仍然难以实现。在本文中,我们量化了二维玻色-爱因斯坦凝聚体(BEC)类比膨胀宇宙中由粒子对产生所生成的纠缠,并考察了各种实验因素的影响,包括来自热噪声和损耗的退相干。我们的分析评估了在这些系统中探测纠缠的可行性,并确定了实现这一目标的最优实验配置。聚焦于文献\cite{Viermann:2022wgw}中详述的实验装置,我们证明在现有能力下,纠缠可以在这些BEC类比中以约2σ的显著性水平被观测到,而在适度改进后,显著性水平可达到不低于3.3σ。实现这一目标将提供粒子对产生量子性质的明确证据,并验证弯曲时空量子场论中最具标志性的预言之一。

英文摘要:

Pair creation is a fundamental prediction of quantum field theory in curved spacetimes. While classical aspects of this phenomenon have been observed, the experimental confirmation of its quantum origin remains elusive. In this article, we quantify the entanglement produced by pair creation in two dimensional Bose-Einstein Condensate (BEC) analogues of expanding universes and examine the impact of various experimental factors, including decoherence from thermal noise and losses. Our analysis evaluates the feasibility of detecting entanglement in these systems and identifies optimal experimental configurations for achieving this goal. Focusing on the experimental setup detailed in \cite{Viermann:2022wgw}, we demonstrate that entanglement can be observed in these BEC analogues at a significance level of $\sim 2σ$ with current capabilities, and at $\gtrsim 3.3σ$ with modest improvements. Achieving this would provide unequivocal evidence of the quantum nature of pair creation and validate one of the most iconic predictions of quantum field theory in curved spacetimes.

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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