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quant-ph2026
Exceptional-point braiding with native controls
Vishnu Chavva, Nero Osmancevic, Hugo Ribeiro
Exceptional points define branch-exchange state transfers through holomorphic continuation of non-Hermitian eigenmodes, but realizing these transfers dynamically remains difficult.…
quant-ph2026
Precise estimation of the coupling strength between two nanomechanical modes from four Ramsey fringes
Anh Tuan Le, Avishek Chowdhury, Hugo Ribeiro +1
We experimentally determine the coupling strength between two strongly coupled nanomechanical modes using a Ramsey-inspired technique optimized for signals as short as four fringes…
quant-ph2025
Topological Operations Around Exceptional Points via Shortcuts to Adiabaticity
Vishnu Chavva, Hugo Ribeiro
The existence of singularities in the spectrum of non-Hermitian Hamiltonians leads to a non-trivial spectral topology which can be exploited to generate topological operations. How…