Please use this identifier to cite or link to this item: https://doi.org/10.1103/PhysRevB.79.193404
Title: Giant cross-Kerr nonlinearity in carbon nanotube quantum dots with spin-orbit coupling
Authors: Sun, H. 
Feng, X.-L. 
Gong, S.
Oh, C.H. 
Issue Date: 1-May-2009
Citation: Sun, H., Feng, X.-L., Gong, S., Oh, C.H. (2009-05-01). Giant cross-Kerr nonlinearity in carbon nanotube quantum dots with spin-orbit coupling. Physical Review B - Condensed Matter and Materials Physics 79 (19) : -. ScholarBank@NUS Repository. https://doi.org/10.1103/PhysRevB.79.193404
Abstract: We investigate the nonlinear interaction between two weak optical fields in carbon nanotube quantum dots based on electromagnetically induced transparency and spin-orbit coupling. Our results show, owing to the energy differences produced by strong spin-orbit coupling, that a giant cross-Kerr nonlinearity can be achieved with group-velocity matching, while the probe- and signal-fields absorptions are suppressed simultaneously. We demonstrate that such enhanced nonlinear optical effects can be employed to implement controlled-phase gate between pairs of single-photon pulses with high fidelity and to generate entanglement of coherent Schrödinger-cat states. © 2009 The American Physical Society.
Source Title: Physical Review B - Condensed Matter and Materials Physics
URI: http://scholarbank.nus.edu.sg/handle/10635/96725
ISSN: 10980121
DOI: 10.1103/PhysRevB.79.193404
Appears in Collections:Staff Publications

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