Figure 1

(Color online) Upper part: Components of the light-induced force on an atom outside a nanofiber. Lower part: Schematic of the $6P_{3∕2}{F}^{\prime }=5$ and $6S_{1∕2}F=4$ hyperfine-structure (hfs) levels of a cesium atom.Reuse & Permissions

Figure 2

Axial component $S_z$ (solid line) and azimuthal component $S_{\phi }$ (dashed line) of the Poynting vector, normalized to the saturation intensity $I_s=1.1\mathrm{mW}∕{\mathrm{cm}}^2$. The fiber radius is $a=100\mathrm{nm}$, the refractive indices of the fiber and the vacuum clad are $n_1=1.45$ and $n_2=1$, respectively, the light wavelength is $\lambda =852\mathrm{nm}$, the light polarization is counterclockwise rotating, and the light propagation power is $P_z=10\mathrm{nW}$.Reuse & Permissions

Figure 3

Spatial dependences of the axial (a), azimuthal (b), and radial (c) components of the force of light on a cesium atom being at rest in its steady internal state outside a nanofiber. The detuning of the field from the $D_2$ line of the atom is $\delta ∕2\pi =-50\mathrm{MHz}$. Other parameters are as in Fig. 2.Reuse & Permissions

Figure 4

Frequency dependences of the axial (a), azimuthal (b), and radial (c) components of the force of light on a cesium atom being at rest in its steady internal state outside a nanofiber. The position of the atom is $r∕a=4$. Other parameters are as in Fig. 2.Reuse & Permissions

Figure 5

Velocity dependences of the components of the force of light on a cesium atom outside a nanofiber. In the left column [(a), (d), (g)], $v_z$ is varied, but $v_{\phi }$ and $v_r$ are set to zero. In the central column [(b), (e), (h)], $v_{\phi }$ is varied, but $v_z$ and $v_r$ are set to zero. In the right column [(c), (f), (i)], $v_r$ is varied, but $v_z$ and $v_{\phi }$ are set to zero. The velocities are given in units of the recoil velocity $v_{\mathrm{recoil}}=\hslash k∕m=3.52\mathrm{mm}∕\mathrm{s}$. The detuning of the field from the $D_2$ line of the atom is $\delta ∕2\pi =-50\mathrm{MHz}$. The position of the atom is $r∕a=4$. The internal state of the atom is the local steady state. Other parameters are as in Fig. 2.Reuse & Permissions

Figure 6

Total effective potential $U_{\mathrm{rad}}$ for the radial motion of a cesium atom. The detuning of the field from the $D_2$ line of the atom is $\delta ∕2\pi =-50\mathrm{MHz}$. The orbital angular momentum of the atom is $L_z=43\hslash$. Other parameters are as in Fig. 2.Reuse & Permissions

Figure 7

(Color online) Three-dimensional trajectory (a) and trajectory mapping (b) of a cesium atom spinning around a nanofiber (shadowed area). The initial position and the initial velocity of the atom are $(x=4a,y=0,z=0)$ and $(v_x=0,v_y=14.6v_{\mathrm{rec}},v_z=20v_{\mathrm{rec}})$, respectively. The detuning is $\delta ∕2\pi =-50\mathrm{MHz}$. The evolution time is $300\mathrm{\mu }\mathrm{s}$. Other parameters are as in Fig. 2.Reuse & Permissions

Figure 8

(Color online) Trajectory mapping of a cesium atom spinning around a nanofiber. The evolution time is $2\mathrm{ms}$. Other parameters are as in Fig. 7.Reuse & Permissions

Figure 9

Axial angular momentum $L_z$ of a spinning cesium atom as a function of time. Other parameters are as in Fig. 7.Reuse & Permissions