Quantum entangled ground states of two spinor Bose-Einstein condensates
Abstract
We revisit in detail the non-mean-field ground-state phase diagram for a binary mixture of spin-1 Bose-Einstein condensates including quantum fluctuations. The non-commuting terms in the spin-dependent Hamiltonian under single spatial mode approximation make it difficult to obtain exact eigenstates. Utilizing the spin z-component conservation and the total spin angular momentum conservation, we numerically derive the information of the building blocks and evaluate von Neumann entropy to quantify the ground states. The mean-field phase boundaries are found to remain largely intact, yet the ground states show fragmented and entangled behaviors within large parameter spaces of interspecies spin-exchange and singlet-pairing interactions.
Keywords
Cite
@article{arxiv.1112.0837,
title = {Quantum entangled ground states of two spinor Bose-Einstein condensates},
author = {Z. F. Xu and R. Lü and L. You},
journal= {arXiv preprint arXiv:1112.0837},
year = {2011}
}
Comments
7 pages, 5 figures