Figure 1

(Color online) Experimental real-space emission of: (a) a pointlike potential generated by a control ${\sigma }^{-}$ laser (detection: ${\sigma }^{-}$), (b) a ${\sigma }^{+}$ probe polariton fluid in the linear regime (detection: ${\sigma }^{+}$), and (c) both the control potential and the probe fluid (detection: ${\sigma }^{+}$). (d) Image obtained from the solution of the Gross-Pitaevskii equation corresponding to (c) (Ref. 28).Reuse & Permissions

Figure 2

(Color online) Experimental far field images (a) in the absence and (b) in the presence of the control beam, corresponding to the near field images in Figs. 1b, 1c, respectively, showing the scattering of probe polaritons generated by the induced potential barrier. The control beam is shown alone in panel (c), detected in the same polarization as that of excitation [corresponding to Fig. 1a]. The white saturated areas correspond to the transmitted probe. [(d)–(f)] Simulated far field images corresponding to (a)–(c), respectively. Vertical and horizontal traces in (d) arise from the periodicity of the numerical spatial grid.Reuse & Permissions

Figure 3

(Color online) (a) Real-space $y$ profiles along the direction indicated by the arrow in Fig. 1c for three powers of the control beam. The solid arrow indicates the position of the induced barrier. (b) Measured (solid points) and calculated (stars) visibility of the fringes as a function of the power of the control beam. The visibility of the fringes is obtained from the intensity of the first two maxima and minima behind the induced potential [to the left of the black arrow in (a)]. The corresponding real space images can be seen in Ref. 28. (c) Calculated height of the induced potential corresponding to the control powers depicted in (a).Reuse & Permissions

Figure 4

(Color online) Real [momentum] space emitted intensity of a TM polarized probe in the linear regime, alone (a) [d] and in the presence of a line potential induced by a TE polarized control beam in the horizontal (b) [e] and diagonal directions (c) [f]. (g) and (h) display simulated images corresponding to (b) and (c), respectively. The dashed red lines indicate the orientation and position of the control. All images are detected along the TM polarization. Control and probe beams are detuned by 1.0 meV from each other.Reuse & Permissions

Figure 5

(Color online) (a) Visibility of fringes as a function of control power for different control-probe detunings, for a pointlike control, and same polarization conditions as in Fig. 4. (b) Probe emission in the conditions marked by a circle in (a).Reuse & Permissions