Tunable self-Kerr nonlinearity with voltage sensing in double quantum dot system
Department of Applied Physics, College of
Electronics, Communication and Physics, Shandong University of Science and
Received in final form: 4 April 2014
Published online: 23 June 2014
We present theoretical study of large self-Kerr nonlinearity in double quantum dot system and an efficient scheme to monitor voltage fluctuation. Due to resonant tunneling, constructive interference occurs for the self-Kerr nonlinearity. At some frequency detuning, the nonlinearity could be enhanced about one order of magnitude larger than that on resonance. The Kerr nonlinearity is sensitive to the tunneling, which can be used to sense voltage fluctuation, and it sensitivity could be of 0.2 μeV from simulation.
Key words: Quantum Optics
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag 2014