Phys. Rev. A 72, 013816 (2005) [7 pages]Optical response of two-level atoms with reflection geometry as a model of a quantum phase gateReceived 11 March 2005; revised 9 May 2005; published 20 July 2005 The nonlinear optical response obtained from a model system of a quantum phase gate is investigated. The model system consists of a thin infinite atomic layer of two-level atoms placed in front of a perfect reflecting mirror. The optical response obtained from the model system is semiclassically analyzed using the finite difference time domain method with the optical Bloch equations. It is shown that a nonlinear phase shift of π is achieved when the atomic layer is placed at an antinode of the input field. This result is consistent with the theoretical result obtained from a one-dimensional atom model [ H. F. Hofmann, K. Kojima, S. Takeuchi and K. Sasaki J. Opt. B: Quantum Semiclassical Opt. 5 218 (2003)]. The dependence of the nonlinear phase shift on the position of the atomic layer is also studied in detail. © 2005 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevA.72.013816
DOI:
10.1103/PhysRevA.72.013816
PACS:
42.65.−k, 32.80.−t, 03.67.Lx
|
|
About | Terms and Conditions | Subscriptions | Search | Help
Use of the American Physical Society websites and journals implies that the user has read and agrees to our Terms and Conditions and any applicable Subscription Agreement. Physical Review®, Physical Review Letters®, Reviews of Modern Physics®, and Physical Review Special Topics® are trademarks of the American Physical Society.