Pump-probe delay in a Ge-integrated non-Hermitian metasurface achieves ~0.5 ps eigenmode switching and full EP encirclement in ~2 ps with >99% modulation depth and Petermann factor ~10^3.
Kawabata , author K
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Successive quantum feedback control with non-adaptive bare measurements collapses to the ten AZ† symmetry classes that dictate topology of CPTP maps, demonstrated via quantized winding numbers in a chiral demon and an explicit protocol outside the classes.
Coupling a skin-localized non-Hermitian chain to a delocalized chain induces a pseudo mobility edge in complex energy that separates localized and extended states, with a quantized winding number characterizing transitions under mixed boundary conditions.
citing papers explorer
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Active Control of Topological Exceptional Points in Non-Hermitian Metasurfaces
Pump-probe delay in a Ge-integrated non-Hermitian metasurface achieves ~0.5 ps eigenmode switching and full EP encirclement in ~2 ps with >99% modulation depth and Petermann factor ~10^3.
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Symmetry and Topology of Successive Quantum Feedback Control
Successive quantum feedback control with non-adaptive bare measurements collapses to the ten AZ† symmetry classes that dictate topology of CPTP maps, demonstrated via quantized winding numbers in a chiral demon and an explicit protocol outside the classes.
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Non-Hermitian pseudo mobility edge in a coupled chain system
Coupling a skin-localized non-Hermitian chain to a delocalized chain induces a pseudo mobility edge in complex energy that separates localized and extended states, with a quantized winding number characterizing transitions under mixed boundary conditions.