Giant fifth-order nonlinearity via tunneling induced quantum interference in triple quantum dots

Journal Article · Sun Feb 15 00:00:00 EST 2015 · AIP Advances

DOI:https://doi.org/10.1063/1.4908008· OSTI ID:22454446

Tian, Si-Cong; Tong, Cun-Zhu; Ning, Yong-Qiang ^[1]; Wan, Ren-Gang ^[2]

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1. State Key laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033 (China)
2. School of Physics and Information Technology, Shaanxi Normal University, Xi’an 710062 (China)

Schemes for giant fifth-order nonlinearity via tunneling in both linear and triangular triple quantum dots are proposed. In both configurations, the real part of the fifth-order nonlinearity can be greatly enhanced, and simultaneously the absorption is suppressed. The analytical expression and the dressed states of the system show that the two tunnelings between the neighboring quantum dots can induce quantum interference, resulting in the giant higher-order nonlinearity. The scheme proposed here may have important applications in quantum information processing at low light level.

• OSTI ID: 22454446
• Journal Information: AIP Advances, Vol. 5, Issue 2; Other Information: (c) 2015 Author(s); Country of input: International Atomic Energy Agency (IAEA); ISSN 2158-3226
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ABSORPTION
QUANTUM DOTS
QUANTUM INFORMATION
TUNNEL EFFECT