Entangled Dynamics in Macroscopic Quantum Tunneling of Bose-Einstein Condensates

被引：12
|
作者：
Alcala, Diego A. [1 ]
Glick, Joseph A. [1 ]
Carr, Lincoln D. [1 ]
机构：
[1] Colorado Sch Mines, Dept Phys, Golden, CO 80401 USA
来源：
PHYSICAL REVIEW LETTERS | 2017年 / 118卷 / 21期
基金：
美国国家科学基金会;
关键词：
SATURABLE NONLINEAR MEDIA; INCOHERENT SOLITONS; STATES; INTERFERENCE; SYSTEMS; BEAMS; MODEL;
D O I：
10.1103/PhysRevLett.118.210403
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Tunneling of a quasibound state is a nonsmooth process in the entangled many-body case. Using time-evolving block decimation, we show that repulsive (attractive) interactions speed up (slow down) tunneling. While the escape time scales exponentially with small interactions, the maximization time of the von Neumann entanglement entropy between the remaining quasibound and escaped atoms scales quadratically. Stronger interactions require higher-order corrections. Entanglement entropy is maximized when about half the atoms have escaped.
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页数：5
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