Quantum Phaselift

Dhrumil Patel, Laura Clinton, Steven T. Flammia +1

Estimating quantum time-series such as the Loschmidt amplitude $f(t)=⟨\psi |{\mathrm{e}}^{-\mathrm{i}Ht}|\psi ⟩$ is central to spectroscopy, Hamiltonian analysis, and many phase-…