Ultrafast Fourier Transform with a Femtosecond-Laser-Driven Molecule
Ultrafast Fourier Transform with a Femtosecond-Laser-Driven Molecule
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DOI：
10.1103/physrevlett.104.180501
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发表时间：
2010-05-07
影响因子：
8.6
通讯作者：
Ohmori, Kenji
中科院分区：
文献类型：
--
作者：
Hosaka, Kouichi;Shimada, Hiroyuki;Ohmori, Kenji
电中性系统的波函数可以作为信息载体来代替现有硅基电路中的真实的电荷，其进一步的集成将导致可能的灾难，其中电流泄漏是不可避免的，绝缘体减薄到原子水平。我们已经实验证明了一种新的逻辑门的基础上的波函数的时间演化。碘分子中的光学定制振动波包实现了具有任意真实的和虚输入的四元和八元离散傅里叶变换。演化时间为145 fs，比目前最快的基于Si的计算机的典型时钟周期短3个数量级。
Wave functions of electrically neutral systems can be used as information carriers to replace real charges in the present Si-based circuit, whose further integration will result in a possible disaster where current leakage is unavoidable with insulators thinned to atomic levels. We have experimentally demonstrated a new logic gate based on the temporal evolution of a wave function. An optically tailored vibrational wave packet in the iodine molecule implements four-and eight-element discrete Fourier transform with arbitrary real and imaginary inputs. The evolution time is 145 fs, which is shorter than the typical clock period of the current fastest Si-based computers by 3 orders of magnitudes.