**MOVE**

**what we have done**

related publications:

related publications:

**what we are doing**

- We are analyzing the possibility of reducing the intensity of the time-dependent magnetic field required in the soliton-generation scheme by extending the field action to a segment of finite, though small, length at the chain end. Aim of the analysis is to check whether the scheme can be experimentally implemented using fields of reasonably attainable intensity.

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magnetic environment as quantum transmission line

magnetic environment as quantum transmission line

- We are considering an approximation scheme where the chain, still assumed to transmit soliton-like signals, retains its quantum character, though in a large-S semiclassical limit. This allows us to understand if and how the interaction of the qubit with the spins of the chain does influence the dynamics of the chain itself, by what is usually called a quantum back-action.
- As the above approximation is preliminarily showing a significant back-action we are considering the possibility of obtaining an effective entanglement transfer between two qubits by connecting them to distant parts of the chain and then making them talk to each other by the properly quantum-renormalized soliton-like signal.

**what we would like to do**

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ongoing projects

ongoing projects

**towards an experimental realization:**

- We need to investigate further the tolerance shown by the soliton-generation scheme with respect to the specific time-dependence of the applied magnetic field.
**M** - We plan to consider the possible effects of exchange and single-site anisotropies in the spin-chain hamiltonian on the functioning of the transmission line.
**M**

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new projects

new projects

**environmental criticality effects:**

We aim at understanding how the effects of a many-body magnetic environment on the principal system, typically one or a couple of qubits, vary when the environment is near, or at, one of its quantum-critical points. We would like to investigate the role on the open quantum system dynamics of the occurrence of critical slowing down and/or long-range correlations.

**M&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)