Development of optical memory using semiconductor nanoparticles

Yukio Yamaguchi

Bruno F. Soares, Fredrik Jönsson, Nikolay I. Zheludev

S. Asai, Eiichi Maruyama

A. V. Malyshev, Victor A Malyshev

Optical response of artificial composite nanoscale molecules comprising a closely spaced noble metal nanoparticle and a semiconductor quantum dot have been studied theoretically. We consider a system composed of an Au particle and CdSe or CdSe/ZnSe quantum dot and predict optical bistability and hysteresis in its response, which suggests various applications, in particular, all-optical processing and optical memory.

Alexander I. Lvovsky, Barry C. Sanders, Wolfgang Tittel

Jian-Bo Li, Meng‐Dong He, Li-Qun Chen

We study theoretically four-wave parametric amplification arising from the nonlinear optical response of hybrid molecules composed of semiconductor quantum dots and metallic nanoparticles. It is shown that highly efficient four-wave parametric amplification can be achieved by adjusting the frequency and intensity of the pump field and the distance between the quantum dot and the metallic nanoparticle. Specifically, the induced probe-wave gain is tunable in a large range from 1 to 1.43 × 10⁵. This gain reaches its maximum at the position of three-photon resonance. Our findings hold great promise for developing four-wave parametric oscillators.