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Non-linear Bragg trap interferometer
Robin Corgier, Luca Pezzè, Augusto Smerzi
We propose a scheme for trapped atom interferometry using an interacting Bose-Einstein condensate. The condensate is controlled and spatially split in two confined external momentu…
Multiparticle Entanglement Dynamics of Quantum Chaos in a Bose-Einstein condensate
Sheng-Chang Li, Luca Pezzè, Augusto Smerzi
We study the particle-entanglement dynamics witnessed by the quantum Fisher information (QFI) of a trapped Bose-Einstein condensate governed by the kicked rotor Hamiltonian. The dy…
Quantum Phase Estimation Algorithm with Gaussian Spin States
Luca Pezzè, Augusto Smerzi
Quantum phase estimation (QPE) is one of the most important subroutines in quantum computing. In general applications, current QPE algorithms either suffer an exponential time over…
Bayesian Quantum Multiphase Estimation Algorithm
Valentin Gebhart, Augusto Smerzi, Luca Pezzè
Quantum phase estimation (QPE) is the key subroutine of several quantum computing algorithms as well as a central ingredient in quantum computational chemistry and quantum simulati…
A machine learning approach to Bayesian parameter estimation
Samuel P. Nolan, Augusto Smerzi, Luca Pezzè
Bayesian estimation is a powerful theoretical paradigm for the operation of quantum sensors. However, the Bayesian method for statistical inference generally suffers from demanding…
Heisenberg-limited noisy atomic clock using a hybrid coherent and squeezed states protocol
Luca Pezzè, Augusto Smerzi
We propose a hybrid quantum-classical atomic clock protocol where the interrogation of an ensemble of uncorrelated atoms in a spin-coherent state is used to feedback one (or more)…