Fig. 1. (a) Diagram of the rough potential varying with the amplitude of perturbation , where perturbed wavenumber ; (b) diagram of the rough potential varying with perturbed wavenumber H, where the perturbation amplitude . (a) 粗糙势 随扰动振幅 的变化, 其中扰动波数 ; (b) 粗糙势 随扰动波数H的变化, 其中扰动振幅

Fig. 2. Curves of (a) the center-of-mass velocity and (b) the Stokes efficiency varying with perturbation amplitude for different coupling strength k, where , , . 不同耦合强度下, (a) 质心平均速度 、(b) 斯托克斯效率 随粗糙势扰动振幅 的变化( , , )

Fig. 3. Curves of (a) the center-of-mass velocity ; (b) the Stokes efficiency varying with coupling strength k for different perturbed wavenumber H, where , , . 不同扰动波数H下 (a) 质心平均速度 ; (b) 斯托克斯效率 随耦合强度k的变化曲线, 其中 , ,

Fig. 4. Curves of (a) the center-of-mass velocity and (b) the Stokes efficiency varying with perturbed wavenumber Hfor different noise intensity D, where , , , . 不同噪声强度下, (a) 质心平均速度速度 、(b) 斯托克斯效率 随扰动波数H的变化( , , , )

Fig. 5. Curves of (a) the center-of-mass velocity and (b) the Stokes efficiency varying with amplitude A for different coupling strength k, where , , . 不同耦合强度下, (a) 质心平均速度 、(b) 斯托克斯效率 随外力振幅A的变化( , , )

Fig. 6. Curves of (a) the center-of-mass velocity varying with free length a, where , , , ; the curves of (b) varying with coupling strength k and free length a, where , , , . (a) 质心平均速度 随耦合自由长度a的变化( , , , , ); (b) 质心平均速度 随耦合自由长度a及耦合强度k的变化( , , , )