Tag: Quantum Mechanics and Non-Hermitian Physics
Defective atomic lattice enables unidirectional reflection lasing
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in OpticsWhat the study found The study reports a scheme for mode-tunable unidirectional reflection lasing using a coherent gain atomic system and a one-dimensional defective atomic lattice. The authors describe this as a single system that combines nonreciprocity and lasing oscillation. Why the authors say this matters The authors say the approach could improve the efficiency…
Non-Abelian Dirac oscillator shows isospin splitting
What the study found The study finds that a covariant Dirac oscillator can be extended to an SU(2) non-Abelian gauge background, where the commutator term produces matrix-valued spin-isospin couplings and, for an aligned planar background, a closed-form isospin splitting. Why the authors say this matters The authors conclude that the framework separates commutator-driven effects from…
Photonic experiment observes energy-band Riemann surface
Researchers experimentally observe energy-band Riemann surfaces in a non-Hermitian photonic system using synthetic frequency dimensions, revealing unified structure underlying topological physics.
