Condensed Matter

cond-mat

Electronic structure, phase transitions, superconductivity, and materials science.

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Uniform Loss Filters Valleys Through Velocity Contrast

A non-Hermitian acoustic crystal uses ordinary background dissipation to reach switchable valley polarization without tailored excitation or external fields.

Jul 13, 20264 min2510.19588

GaN Polariton BIC Laser Forms Bright Solitons

A grating-coupled GaN waveguide creates a negative-mass polariton BIC whose blueshift, linewidth narrowing, and spatial compression track soliton formation above threshold.

Jul 13, 20265 min2512.23368

Metastable Helium Shrinks Motion Bottlenecks in Tweezer Arrays

Using the lightest trappable atom, the blueprint predicts ≥3× faster inter-tweezer hopping than lithium-6 plus trap-encoded motional qubits.

Jul 13, 20264 min2601.06763