Vittorio Giovannetti
4 papers in the PaperMetrix corpus
Papers by this author
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Quantum estimation via sequential measurements
2015 · New Journal of Physics
The problem of estimating a parameter of a quantum system through a series of measurements performed sequentially on a quantum probe is analyzed in the general setting where the underlying statistics is explicitly non-i.i.d. We …
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Passive states as optimal inputs for single-jump lossy quantum channels
2016 · DSpace@MIT (Massachusetts Institute of Technology)
The passive states of a quantum system minimize the average energy among all the states with a given spectrum. We prove that passive states are the optimal inputs of single-jump lossy quantum channels. These channels …
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Bosonic Quantum Communication Across Arbitrarily High Loss Channels
2020 · Physical Review Letters
A general attenuator ${\mathrm{\ensuremath{\Phi}}}_{\ensuremath{\lambda},\ensuremath{\sigma}}$ is a bosonic quantum channel that acts by combining the input with a fixed environment state $\ensuremath{\sigma}$ in a beam splitter of transmissivity $\ensuremath{\lambda}$. If $\ensuremath{\sigma}$ is a thermal state, the …
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Measuring non-Markovianity via incoherent mixing with Markovian dynamics
2021 · Physical Review A
We introduce a measure of non-Markovianity based on the minimal amount of extra Markovian noise we have to add to the process via incoherent mixing, in order to make the resulting transformation Markovian too at …