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quant-ph2026
Exceptional Points as Witnesses of Non-Gaussian Noise
Aritra Ghosh, Subhashish Banerjee, M. Bhattacharya
Efficient control of quantum devices requires the knowledge of their environmental noise, yet the commonly measured power spectrum does not fully characterize non-Gaussian fluctuat…
quant-ph2026
Krylov Tomography and Finite-Uncertainty Certification of Exceptional-Point Dynamics
Aritra Ghosh, M. Bhattacharya
Exceptional points (EPs) can produce striking responses, but locating one does not reveal how much of its dynamics an excitation accesses, which responses a detector distinguishes,…
quant-ph2026★ 1 cited
Quantum jumps in open cavity optomechanics and Liouvillian versus Hamiltonian exceptional points
Aritra Ghosh, M. Bhattacharya
Exceptional points, where two or more eigenstates of a non-Hermitian system coalesce, are now of interest across many fields of physics, from the perspective of open-system dynamic…