分类： 光学 >> 量子光学 提交时间： 2023-02-19
摘要： A material with symmetry breaking inside can transmit the symmetry breaking to its vicinity by vacuum electromagnetic fluctuations. The vacuum in proximate to a symmetry-broken material is referred as its quantum atmosphere. Here, we show that a parity-symmetry-broken quantum atmosphere can induce a chirality-dependent shift of the ground-state energy of a chiral molecule, resulting in a chemical reaction process that favors producing one chirality over the other. We calculate concrete examples and evaluate the chirality production rate, showing the promise of quantum atmospheric selectivity.
分类： 光学 >> 量子光学 提交时间： 2023-02-19
摘要： The interplay between dissipation, topology and sensitivity to boundary conditions has recently attracted tremendous amounts of attention at the level of effective non-Hermitian descriptions. Here we exactly solve a quantum mechanical Lindblad master equation describing a dissipative topological Su-Schrieffer-Heeger (SSH) chain of fermions for both open boundary condition (OBC) and periodic boundary condition (PBC). We find that the extreme sensitivity on the boundary conditions associated with the non-Hermitian skin effect is directly reflected in the rapidities governing the time evolution of the density matrix giving rise to a Liouvillian skin effect. This leads to several intriguing phenomena including boundary sensitive damping behavior, steady state currents in finite periodic systems, and diverging relaxation times in the limit of large systems. We illuminate how the role of topology in these systems differs in the effective non-Hermitian Hamiltonian limit and the full master equation framework.
点击量
待评议
点击量
下载量
评论
