| 摘要 |
<p>The present invention provides a method for operating a logical gate using at least one delayed optical router comprising a nonlinear optical medium, wherein the nonlinear optical medium comprises two closely spaced ground states such that a transition between said two ground states is dipole forbidden, and an excited state such that two-photon transitions between said two ground states via said excited state are allowed, the method comprising: using at least one of a slow light (S) and a nondegenerate four-wave mixing signal (D) as a result of Boolean algebra; wherein the slow light (S) is appeared by applying, to the nonlinear optical medium, a first laser beam (P) with a first frequency corresponding to a first transition between a first ground state of the two ground states and the excited state and a second laser beam (C) with a second frequency corresponding to a second transition between a second ground state of the two ground states and the excited state, and the nondegenerate four-wave mixing signal (D) is appeared by applying, to the nonlinear optical medium, the first laser beam (P) with the first frequency, the second laser beam (C) with the second frequency and a third laser beam (A) with a third frequency corresponding to the second transition.</p> |
