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
复制标题
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
影响因子:
2.9
通讯作者:
Holdaway D
中科院分区:
文献类型:
--
作者:
Holdaway D
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