驱动力失衡对一维晶格中玻色-爱因斯坦凝聚态粒子发射的影响

IF 1.5 4区物理与天体物理 Q2 PHYSICS, MULTIDISCIPLINARY

Chinese Physics B Pub Date : 2023-12-01 DOI:10.1088/1674-1056/ad1172

L. Lai, Zhao Li

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引用次数: 0

摘要

时间周期驱动已成为非平衡态量子动力学领域的一种有效工具，它能够精确控制粒子间的相互作用。在这项工作中，我们研究了一维晶格中玻色-爱因斯坦凝聚体的粒子集体发射，这些粒子具有调制幅值和相对相位分离的周期性驱动。除了粒子发射增强外，我们还发现振幅不平衡会导致能量偏移和能带展宽，而典型的相对相可能会产生类似的间隙。这些结果提供了对具有音调变化驱动器的非平衡量子系统的具体操作的见解。

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Effects of drive imbalance on the particle emission from a Bose-Einstein condensate in a one-dimensional lattice

Time-periodic driving has been an effective tool in the field of nonequilibrium quantum dynamics, which enables precise control of the particle interactions. In this work, we investigate the collective emission of particles from a Bose-Einstein condensate in a one-dimensional lattice with periodic drives that are separate in modulation amplitudes and relative phases. In addition to the enhancement of particle emission, we find that amplitude imbalances lead to energy shift and band broadening, while typical relative phases may give rise to similar gaps. These results offer insights into the specific manipulations of nonequilibrium quantum systems with tone-varying drives.

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来源期刊

Chinese Physics B 物理-物理：综合

CiteScore

2.80

自引率

23.50%

发文量

15667

审稿时长

2.4 months

期刊介绍： Chinese Physics B is an international journal covering the latest developments and achievements in all branches of physics worldwide (with the exception of nuclear physics and physics of elementary particles and fields, which is covered by Chinese Physics C). It publishes original research papers and rapid communications reflecting creative and innovative achievements across the field of physics, as well as review articles covering important accomplishments in the frontiers of physics. Subject coverage includes: Condensed matter physics and the physics of materials Atomic, molecular and optical physics Statistical, nonlinear and soft matter physics Plasma physics Interdisciplinary physics.