Della Valle G, Ornigotti M, Cianci E, Foglietti V, Laporta P, Longhi S
Dipartimento di Fisica and Istituto di Fotonica e Nanotecnologie del CNR, Politecnico di Milano, Piazza L. da Vinci 32, I-20133 Milan, Italy.
Phys Rev Lett. 2007 Jun 29;98(26):263601. doi: 10.1103/PhysRevLett.98.263601. Epub 2007 Jun 28.
We report on a direct visualization of coherent destruction of tunneling (CDT) of light waves in a double well system which provides an optical analog of quantum CDT as originally proposed by Grossmann, Dittrich, Jung, and Hänggi [Phys. Rev. Lett. 67, 516 (1991)10.1103/PhysRevLett.67.516]. The driven double well, realized by two periodically curved waveguides in an Er:Yb-doped glass, is designed so that spatial light propagation exactly mimics the coherent space-time dynamics of matter waves in a driven double well potential governed by the Schrödinger equation. The fluorescence of Er ions is exploited to image the spatial evolution of light in the two wells, clearly demonstrating suppression of light tunneling for special ratios between the frequency and amplitude of the driving field.
我们报告了在双阱系统中光波隧穿相干破坏（CDT）的直接可视化，该系统提供了由格罗斯曼、迪特里希、荣格和亨吉最初提出的量子CDT的光学模拟[《物理评论快报》67, 516 (1991)10.1103/PhysRevLett.67.516]。由掺铒镱玻璃中的两个周期性弯曲波导实现的驱动双阱，其设计使得空间光传播精确模拟受薛定谔方程支配的驱动双阱势中物质波的相干时空动力学。利用铒离子的荧光来成像两阱中光的空间演化，清楚地证明了在驱动场的频率和振幅之间的特殊比率下光隧穿的抑制。
