Cavity quantum electrodynamics control of quantum Hall stripes
2 days ago
- #cavity QED
- #quantum Hall stripes
- #electronic transport
- Researchers demonstrated cavity-induced anisotropies in the electronic transport of a high-mobility 2D electron system under a strong magnetic field.
- The longitudinal resistivity was suppressed well below its zero-field value, occurring at ultralow temperatures between quantized Hall plateaus.
- This effect is interpreted as the stabilization of thermally disordered quantum Hall stripes via cavity vacuum fluctuations.
- A slot antenna cavity in the ultrastrong-coupling regime was used to anisotropically couple with the electron system, aligning stripes along a specific direction.
- The cavity design produced a large free energy difference favoring stripe orientation, enhancing transport anisotropy and suppressing resistivity.
- The work illustrates passive cavity quantum electrodynamics control of a correlated electronic phase without external driving.