Nov 14 – 15, 2022
Europe/Rome timezone

Trapped-Ion Quantum Simulation of Collective Neutrino Oscillations

Nov 15, 2022, 3:05 PM
Aula Specola (Bologna)

Aula Specola


Palazzo Poggi Via Zamboni 33
Simulazione Martedi


Valentina Amitrano (Istituto Nazionale di Fisica Nucleare)


Studies of neutrinos from astrophysical environments such as core-collapse supernovae, neutron star mergers and the early universe provide a large amount of information about various phenomena occurring in them. The description of the flavor oscillation is a crucial aspect for such studies, since the physics of matter under extreme conditions is strongly flavor-dependents (nucleosynthesis, proton/neutron ratio, spectral splits...).
It is well known that the neutrino flavor changes under the effect of 3 contributions: the vacuum oscillation, the interaction with the electrons of the surrounding matter, and the collective oscillations due to interactions between different neutrinos.
This last effect adds a non-linear contribution to the equations of motion, making the exact simulation of such a system inaccessible from any current classical computational resource.

Our goal is to describe the real time evolution of a system of many neutrinos by implementing the unitary propagator $U(t) = e^{-iHt}$ using quantum computation and paying attention to the fact that the flavor Hamiltonian $H$, in the presence of neutrino-neutrino term, presents an all-to-all interaction that makes the implementation of $U(t)$, into a quantum algorithm, strongly dependent on the qubit topology/connectivity.

In this contribution we present an efficient way to simulate the coherent collective oscillations of a system of $N$ neutrinos motivating the benefits of full-qubit connectivity which allows for more freedom in gate decomposition and a smaller number of quantum gates making simulation on near-term quantum devises more feasible.

We present the results obtained from a real quantum simulation on a trapped-ions based quantum machine for the cases of $N=4$ and $N=8$ neutrinos.

Primary authors

Alessandro Roggero (Istituto Nazionale di Fisica Nucleare) Valentina Amitrano (Istituto Nazionale di Fisica Nucleare) Francesco Pederiva (Istituto Nazionale di Fisica Nucleare) Francesco Turro (Istituto Nazionale di Fisica Nucleare) Luca Vespucci (University of Trento, INFN-TIFPA) Piero Luchi (Istituto Nazionale di Fisica Nucleare)

Presentation materials