11 citations · 11 across the 7 of their papers we have counts for
7 papers
Heisenberg scaling under collective non-parallel directional noise via geometric state design
Francisco Riberi, Lorenza Viola, Milad Marvian
Spin-squeezed states enable entanglement-enhanced frequency estimation; however, the achievable performance is limited in practice by decoherence. We study the problem of parameter…
Randomized Quantum Optimal Control
Leeseok Kim, Francisco Riberi, Kevin Baca +1
Quantum optimal control (QOC) aims to find control functions that optimally steer a quantum system toward a target operation. We introduce a \emph{randomized} QOC framework where o…
Boundary-localized non-Hermitian modes in an absorbing quantum walk
Francisco Riberi
We introduce and solve from first principles a continuous-time quantum walk with absorption generated by a Lindblad boundary sink of arbitrary strength. Projecting onto the survivi…
Precision bounds for frequency estimation under collective dephasing and open-loop control
Francisco Riberi, Gerardo Paz-Silva, Lorenza Viola
Dephasing noise is a ubiquitous source of decoherence in current atomic sensors. We address the problem of entanglement-assisted frequency estimation subject to classical dephasing…
Optimal asymptotic precision bounds for nonlinear quantum metrology under collective dephasing
Francisco Riberi, Lorenza Viola
Interactions among sensors can provide, in addition to entanglement, an important resource for boosting the precision in quantum estimation protocols. Dephasing noise, however, rem…
Nearly Heisenberg-limited noise-unbiased frequency estimation by tailored sensor design
Francisco Riberi, Gerardo Paz-Silva, Lorenza Viola
We consider entanglement-assisted frequency estimation by Ramsey interferometry, in the presence of dephasing noise from spatiotemporally correlated environments.By working in the…
Frequency estimation under non-Markovian spatially correlated quantum noise: Restoring superclassical precision scaling
Francisco Riberi, Leigh M. Norris, Felix Beaudoin +1
We study the estimation precision attainable by entanglement-enhanced Ramsey interferometry in the presence of spatiotemporally correlated non-classical noise. Our analysis relies…