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|Title:||Giant cross-Kerr nonlinearity in carbon nanotube quantum dots with spin-orbit coupling|
|Authors:||Sun, H. |
|Source:||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|
|Appears in Collections:||Staff Publications|
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