期刊
FRONTIERS OF PHYSICS
卷 16, 期 1, 页码 -出版社
HIGHER EDUCATION PRESS
DOI: 10.1007/s11467-020-0983-3
关键词
topological phase transition; topological state transfer; optomechanical lattice
资金
- National Natural Science Foundation of China [61822114, 11874132, 61575055, 11575048]
The research shows that by designing the coupling of the optomechanical lattice, a phase transition can be achieved between the topologically nontrivial SSH model and the topologically trivial SSH model. Additionally, by controlling the decay of the cavity field and optomechanical coupling, photon states can be transferred between two cavity fields.
We propose a scheme to investigate the topological phase transition and the topological state transfer based on the small optomechanical lattice under the realistic parameters regime. We find that the optomechanical lattice can be equivalent to a topologically nontrivial Su-Schrieffer-Heeger (SSH) model via designing the effective optomechanical coupling. Especially, the optomechanical lattice experiences the phase transition between topologically nontrivial SSH phase and topologically trivial SSH phase by controlling the decay of the cavity field and the optomechanical coupling. We stress that the topological phase transition is mainly induced by the decay of the cavity field, which is counter-intuitive since the dissipation is usually detrimental to the system. Also, we investigate the photonic state transfer between the two cavity fields via the topologically protected edge channel based on the small optomechanical lattice. We find that the quantum state transfer assisted by the topological zero energy mode can be achieved via implying the external lasers with the periodical driving amplitudes into the cavity fields. Our scheme provides the fundamental and the insightful explanations towards the mapping of the photonic topological insulator based on the micro-nano optomechanical quantum optical platform.
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