Incoherent control of Goos-Hanchen shifts in a tunneling quantum dot molecule

In this letter, we propose a novel model for adjusting the Goos-Hanchen shifts (GH) from a fixed cavity. A three-level double quantum dot (QD) molecule is doped in the cavity, which interacts with a probe laser field and an incoherent pumping rate. We initially investigate the refraction index of double QDs utilizing the quantum mechanical density matrix approach in order to achieve negative and positive refractive indexes. The GH shifts of reflected and transmitted light beams in positive and negative refraction indices of the intracavity medium were then studied. The improved negative or positive GH shifts in reflected and transmitted light beams may be accomplished by changing the incoherent pumping rate and tunneling effect. Our findings reveal that the magnitude of the GH shifts is greatly influenced by the absorption of incoming probing light in double QDs. The enormous GH shifts for the perfect tuning cavity have been seen at a given incidence angle.

Journal

LASER PHYSICS LETTERS

Year

2022

Volume

19

Issue

5

ISSN

1612-2011

eISSN

1612-202X

DOI

10.1088/1612-202X/ac6037

WoS UID

WOS:000777828300001