On #SpotlightSunday, view this Spotlight Summary by Oriol Arteaga of #OPG_JOSA_A: Antisymmetric Mueller generator as the universal origin of geometric phase in classical polarization and quantum two-level systems https://bit.ly/4bTGWic #GeometricPhase #MuellerMatrix💡⚛️

Mixed-state geometric phase generated by phase winding provides unified diagnosis of steady-state reorganization in quantum oscillators, connecting synchronization, Hopf criticality, and dissipative phase transitions through a single state-space invariant.

#QuantumControl #GeometricPhase #Research

Resolves the mathematical ambiguity in determining geometric phases when quantum system control fields pass through level degeneracy by identifying the unique osculating-plane geodesic closure and proving it via monopole connection formalism.

#GeometricPhase #QuantumControl #Research

New theorem reveals how to distinguish whether multiqubit geometric phases arise from direct n-body interactions or mediated routes through lower-order couplings—tested on three-qubit systems with calibrated Ramsey spectroscopy.

#QuantumControl #GeometricPhase #Research

Beating envelope dynamics enable coherent control of quantum geometric phases in two-level atoms, producing modified photoelectron spectra with re-emergent central peaks and higher-order sidebands beyond standard Autler-Townes structures.

#GeometricPhase #QuantumControl #Spectroscopy

Demonstrates that geometric phases depend on temperature when quantum systems undergo adiabatic evolution coupled with their environment. Temperature enters via gauge potentials derived from Born-Oppenheimer approximation, shown using H2+ molecular ion.

#GeometricPhase #QuantumControl #Research