Abstract
We propose a scheme for realizing a two-qubit controlled phase gate via an unconventional geometric phase with two nonidentical and spatially separated quantum dots (QDs) trapped in a photonic crystal cavity. In this system, the QDs simultaneously interact with a large detuned cavity mode and strong driving classical light fields. During the gate operation, the QDs undergo no transitions, while the cavity mode is displaced along a closed path in the phase space. In this way, the system can acquire different unconventional geometric phases conditional upon the states of the QDs, and a two-qubit entangling gate can be constructed.
© 2011 Optical Society of America
Full Article | PDF ArticleMore Like This
Shi-fan Qi and Jun Jing
J. Opt. Soc. Am. B 37(3) 682-694 (2020)
Zhi-Rong Zhong and Xiao-Bin Huang
J. Opt. Soc. Am. B 32(2) 258-262 (2015)
Y. Q. Zhang, S. Zhang, K. H. Yeon, and S. C. Yu
J. Opt. Soc. Am. B 29(3) 300-304 (2012)