In this paper, we analyze the performance of an electro-optic modulator based on a single quantum dot strongly coupled to a nano-resonator, where electrical control of the quantum dot frequency is achieved via quantum confined Stark effect. Using realistic system parameters, we show that modulation speeds of a few tens of GHz are achievable with this system, while the energy per switching operation can be as small as 0.5 fJ. In addition, we study the non-linear distortion, and the effect of pure quantum dot dephasing on the performance of the modulator.
© 2010 Optical Society of America
(350.4238) Other areas of optics : Nanophotonics and photonic crystals
(250.4110) Optoelectronics : Modulators
(250.3750) Optoelectronics : Optical logic devices
(250.5590) Optoelectronics : Quantum-well, -wire and -dot devices
Original Manuscript: November 9, 2009
Revised Manuscript: January 27, 2010
Manuscript Accepted: February 4, 2010
Published: February 16, 2010
, "Theory of electro-optic modulation via a quantum dot coupled to a nano-resonator," Opt. Express 18, 3974-3984 (2010)
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