Data di Pubblicazione:
2020
Citazione:
Quantum probes for universal gravity corrections / A. Candeloro, C. Degli Esposti Boschi, M.G. . Paris. - In: PHYSICAL REVIEW D. - ISSN 2470-0010. - 102:5(2020 Sep 11).
Abstract:
We address the precision of the estimation procedures for the minimum length arising from gravitational theories. In particular, we provide bounds on precision and assess the use of quantum probes to enhance the estimation performance. At first, we review the concept of minimum length and how it induces a perturbative term appearing in the Hamiltonian of any quantum system, which itself is proportional to a parameter depending on the minimum length. We then systematically study the effects of this perturbation on different state preparations and for several one-dimensional systems, and evaluate the quantum Fisher information in order to find the ultimate bounds to precision. Eventually, we investigate the role of dimensionality by analyzing the use of two-dimensional square well and harmonic oscillator systems to probe the minimal length. Our results show that quantum probes are convenient resources, providing potential enhancement in precision. Additionally, our results provide a set of guidelines to design future experiments to detect the minimum length.
Tipologia IRIS:
01 - Articolo su periodico
Keywords:
Quantum gravity; Quantum metrology; Quantum parameter estimation
Elenco autori:
A. Candeloro, C. Degli Esposti Boschi, M.G. . Paris
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