Phase-matching condition for enhanced entanglement of colliding indistinguishable quantum bright solitons in a harmonic trap

Phase-matching condition for enhanced entanglement of colliding indistinguishable quantum bright solitons in a harmonic trap
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谐波陷阱中碰撞不可区分量子亮孤子增强纠缠的相位匹配条件

DOI:
10.1103/physreva.89.013611
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发表时间:
2014
期刊:
影响因子:
2.9
通讯作者:
Holdaway D
Holdaway D
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Holdaway D

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我们研究了具有吸引接触相互作用的初始定义数量的相同玻色子的两个状态之间的碰撞中的有限数效应,这些玻色子在一维谐波约束存在下振荡。我们研究了两原子束缚态,它们最初从陷阱中心(对称)位移,然后自由演化。对于足够吸引的相互作用,这些束缚态就像通过贝特孤子(量子孤子)发现的那样。然而,与自由情况不同,由于约束,可积性丧失,碰撞可能导致混合成不同的束缚态构型。我们通过有限基内哈密顿量的精确对角化,对系统的最简单情况进行了数值研究,研究了左右数不确定性作为纠缠的主要测量。我们发现,对于一定的相互作用强度,相位匹配条件导致共振转移到具有高度非泊松相对数统计的不同束缚态构型。
We investigate finite number effects in collisions between two states of an initially well defined number of identical bosons with attractive contact interactions, oscillating in the presence of harmonic confinement in one dimension. We investigate twoatom bound states, which are initially displaced (symmetrically) from the trap center, and then left to freely evolve. For sufficiently attractive interactions, these bound states are like those found through use of the Bethe ansatz (quantum solitons). However, unlike the free case, the integrability is lost due to confinement, and collisions can cause mixing into different bound-state configurations. We study the system numerically for the simplest case of, via an exact diagonalization of the Hamiltonian within a finite basis, investigating left-right number uncertainty as our primary measure of entanglement. We find that for certain interaction strengths, a phase-matching condition leads to resonant transfer to different bound-state configurations with highly non-Poissonian relative number statistics.
DOI: 10.1142/p817
发表时间: 2013-04
期刊: --
影响因子: --
作者:
N. Proukakis;S. Gardiner;Matthew J. Davis;M. Szymańska
通讯作者: N. Proukakis;S. Gardiner;Matthew J. Davis;M. Szymańska
DOI: --
发表时间: 2013
期刊:
影响因子: --
作者:
A. Daley
通讯作者: A. Daley