**OPEN**

**what we have done**

related publications:

related publications:

- Studying the "back-action", i.e. the effective evolution of the environment due to the interaction with the principal system, focusing on a spin-boson model.
- We are considering an approximation scheme in order to study the interaction of some qubits with a large-S magnetic system (the environment) that retains its quantum nature, though in a semiclassical limit.

**what we are doing**

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coherent states and gravitational field

coherent states and gravitational field

- We are exploring the possible connections between quantum information theory and (quantum?) gravity. In particular, by using the parametric representation with environmental coherent states we are trying to understand which are the coherent states that describe the Einstein equations in the classical limit.

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decoherence times

decoherence times

- After having formally defined the time after which a generic environment induces full decoherence in the principal system, we are studying how this time depends on the more or less pronounced quantum character of the environment, in order to devise strategies to make such time as long as possible.
**M**

**what we would like to do**

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ongoing projects

ongoing projects

**from Lindblad to Langevin, and back:**

- We aim at exploting the parametric representation of the reduced density matrix for a principal system, in order to derive its exact equation of motion in terms of the hamiltonian describing the interaction with the environment. We believe this might lead to a better understanding of the origin of non-markovianity, possibly claryfing the origin of the Lindblad equation and the physical meaning of the Lindblad operators. Moreover, this analysis should clarify the connection between the quantum Langevin equation and the Lindblad formalism.
**M&D**

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new projects

new projects

**quantum thermodynamics:**

- We would like to start dealing with quantum thermodynamics, referring both to approaches based on the path-integral formulation of quantum statistical mechanics and the more recently introduced analysis based on quantum information theory and open quantum systems dynamics.
**D**

**quantum noise:**

- We plan to study if and how the dynamics of a disordered quantum environment can be responsible for the principal system to be affected by quantum noise and, if yes, how the back action can influence the main features of such noise. A more general analysis of quantum noise is also being considered.
**D**

**projects marked with M are suitable for a MS thesis (laurea magistrale)**

projects marked with D are suitable for a PhD thesis (dottorato)

projects marked with D are suitable for a PhD thesis (dottorato)