Coherent destruction of tunneling in chaotic microcavities via three-state anti-crossings.
Coherent destruction of tunneling (CDT) has been one seminal result of quantum dynamics control. Traditionally, CDT is understood as destructive interference between two intermediate transition paths near the level crossing. CDT near the level anti-crossings, especially the "locking", has not been thoroughly explored so far. Taking chaotic microcavity as an example, here we study the inhibition of the tunneling via the strong couplings of three resonances. While the tunneling rate is only slightly affected by each strong coupling between two modes, the destructive interference between two strong couplings can dramatically improve the inhibition of the tunneling. A "locking" point, where dynamical tunneling is completely suppressed, has even been observed. We believe our finding will shed light on researches on micro- & nano-photonics.
1] Department of Electronic and Information Engineering, Shenzhen Graduate School, Harbin Institute of Technology, Shenzhen, 518055, China [2] National Key Laboratory of Tunable Laser Technology, Institute of Opto-Electronics, Harbin Institute for Technology, Harbin, 150080, China.
Qinghai
Q
Song
Department of Electronic and Information Engineering, Shenzhen Graduate School, Harbin Institute of Technology, Shenzhen, 518055, China.
Zhiyuan
Z
Gu
Department of Electronic and Information Engineering, Shenzhen Graduate School, Harbin Institute of Technology, Shenzhen, 518055, China.
Shuai
S
Liu
Department of Material Science and Engineering, Shenzhen Graduate School, Harbin Institute of Technology, Shenzhen, China, 518055.
Shumin
S
Xiao