Quantum Metrology
Quantum metrology aims at exploiting quantum mechanics to perform measurements whose precision is not achievable by means of purely classical approaches.
Among the next-generation of quantum technologies, that are expected to affect the paradigm for information and communication technology in a radical way, quantum metrology is definitely one of the most promising.
In my research I focus on the derivation of the ultimate limits on the measurement precision posed by quantum mechanics, with a particular attention to the multi-parameter case and in the presence of noise and decoherence.
selected publications
Among the next-generation of quantum technologies, that are expected to affect the paradigm for information and communication technology in a radical way, quantum metrology is definitely one of the most promising.
In my research I focus on the derivation of the ultimate limits on the measurement precision posed by quantum mechanics, with a particular attention to the multi-parameter case and in the presence of noise and decoherence.
selected publications
- MAC Rossi et al., Noisy Quantum Metrology Enhanced by Continuous Nondemolition Measurement
Physical Review Letters 125, 200505 (2020). - F Albarelli et al., A perspective on multiparameter quantum metrology: from theoretical tools to applications in quantum imaging,
Physics Letters A 384, 126311 (2020). - F Albarelli et al, Ultimate limits for quantum magnetometry via time-continuous measurements,
New Journal of Physics 19, 123011 (2017). - E Roccia et al., Multiparameter approach to quantum phase estimation with limited visibility,
Optica 5, 1171 (2018). - MD Vidrighin et al., Joint estimation of phase and phase diffusion for quantum metrology,
Nature Communications 5, 3532 (2014). - MG Genoni et al., Optical Phase Estimation in the Presence of Phase Diffusion,
Physical Review Letters 106, 153603 (2011).
Quantum Control
As it happens in “classical technologies”, where the effect of noise is neutralized by monitoring and controlling the signal and its environment, quantum control is going to play a fundamental role for the development of noise-resilient protocols based on quantum mechanics.
In my research I focus on control strategies based on time-continuous monitoring and feedback, with applications to quantum state engineering and quantum metrology. A major attention is devoted to quantum opto-mechanical systems, such as oscillating mirrors or levitating nanosphere interacting with quantum light.
selected publications
In my research I focus on control strategies based on time-continuous monitoring and feedback, with applications to quantum state engineering and quantum metrology. A major attention is devoted to quantum opto-mechanical systems, such as oscillating mirrors or levitating nanosphere interacting with quantum light.
selected publications
- A Di Giovanni et al., Unconditional mechanical squeezing via back-action evading measurements and non-optimal feedback control ,
Physical Review A 103, 022614 (2021). - MG Genoni et al., Quantum cooling and squeezing of a levitating nanosphere via time-continuous measurements,
New Journal of Physics 17 (7), 073019 (2015). - MG Genoni et al., Squeezing of mechanical motion via qubit-assisted control,
New Journal of Physics 17 (1), 013034 (2015). - MG Genoni et al., Dynamical Recurrence and the Quantum Control of Coupled Oscillators,
Physical Review Letters 108 (15), 150501 (2012).
Characterization of Continuous-Variable Quantum Systems
Continuous-variable quantum systems are described by position and momentum operators obeying the canonical commuation relation. They are ubiquitous in quantum physics as this formalism is able to describe quantum light, trapped ions, mechanical oscillators and atomic ensembles. Gaussian systems represent a specific subclass of continuous-variable quantum systems that, at the same time, can be efficiently described mathematically and exploited for quantum technology purposes.
A part from studying Gaussian systems and their applications in quantum technologies, in my research I focus on the characterization of non-Gaussian states and operations, deriving measures and criteria able to describe this class of states whose usefulness in quantum technologies has been demonstrated in the literature.
selected publications
A part from studying Gaussian systems and their applications in quantum technologies, in my research I focus on the characterization of non-Gaussian states and operations, deriving measures and criteria able to describe this class of states whose usefulness in quantum technologies has been demonstrated in the literature.
selected publications
- F Albarelli et al., Resource theory of quantum non-Gaussianity and Wigner negativity,
Physical Review A, 98 052350 (2018). - MG Genoni et al., Detecting quantum non-Gaussianity via the Wigner function,
Physical Review A 87 (6), 062104 (2013). - MG Genoni, MGA Paris, Quantifying non-Gaussianity for quantum information,
Physical Review A 82 (5), 052341 (2010). - MG Genoni et al., Quantifying the non-Gaussian character of a quantum state by quantum relative entropy,
Physical Review A 78 (6), 060303(R) (2008).