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Title: Strongly interacting photons in asymmetric quantum well via resonant tunneling
Authors: Sun, H. 
Fan, S.L.
Feng, X.L. 
Wu, C.F. 
Gong, S.Q.
Huang, G.X.
Oh, C.H. 
Issue Date: 9-Apr-2012
Citation: Sun, H., Fan, S.L., Feng, X.L., Wu, C.F., Gong, S.Q., Huang, G.X., Oh, C.H. (2012-04-09). Strongly interacting photons in asymmetric quantum well via resonant tunneling. Optics Express 20 (8) : 8485-8495. ScholarBank@NUS Repository.
Abstract: We propose an asymmetric quantum well structure to realize strong interaction between two slow optical pulses. The essential idea is the combination of the advantages of inverted-Y type scheme and resonant tunneling. We analytically demonstrate that giant cross-Kerr nonlinearity can be achieved with vanishing absorptions. Owing to resonant tunneling, the contributions of the probe and signal cross-Kerr nonlinearities to total nonlinear phase shift vary from destructive to constrictive, leading to nonlinear phase shift on order of π at low light level. In this structure, the scheme is inherent symmetric for the probe and signal pulses. Consequently, the condition of group velocity matching can be fulfilled with appropriate initial electron distribution. © 2012 Optical Society of America.
Source Title: Optics Express
ISSN: 10944087
DOI: 10.1364/OE.20.008485
Appears in Collections:Staff Publications

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