Chirality-modulated photonic spin Hall effect in PT-symmetry

The photonic spin Hall effect (PSHE), featured by a spin-dependent shift driven by its polarization handedness, is proposed to facilitate the applications in precision metrology and quantum information processing. Here, due to the magnetoelectric coupling of the chirality, the PSHE is accompanied with Goos-Hanchen and Imbert-Fedorov effects. Taking advantage of this superiority, the transverse shift (TS) and longitudinal shift (LS) can be applied simultaneously. Rearranging the PT-symmetric scattering matrix, the responsive PSHE near the exceptional points and their basic physical mechanisms are discussed in detail in the case of complex chirality kappa. Re[kappa] and Im[kappa] regulated the rich (at multi-angle), gaint (reach upper limit) and tunable (magnitude and direction) TS and LS, respectively. Based on the chirality-modulated PSHE, the novel applications in binary code conversion and barcode encryption are proposed systematically. By incorporating the quantum weak measurement technology, our applications provide new mechanisms to realize optoelectronic communication.

Automated summary

The photonic spin Hall effect is proposed for precision metrology and quantum information processing. It is accompanied by the Goos-Hanchen and Imbert-Fedorov effects. By manipulating the chirality, transverse and longitudinal shifts can be achieved simultaneously.