Dynamics of quantum resources under noisy spatial deformation of identical particles - UTU Research Portal

A1 Refereed original research article in a scientific journal

Dynamics of quantum resources under noisy spatial deformation of identical particles;

Authors: Ferrara, A.; Nosrati, F.; Smirne, A.; Piilo, J.; Lo Franco, R.

Publisher: Società Italiana di Fisica

Publication year: 2026

Journal: Il Nuovo Cimento C - Colloquia on Physics

Article number: 172

Volume: 49

Issue: 5-6

ISSN: 2037-4909

eISSN: 1826-9885

DOI: https://doi.org/10.1393/ncc/i2026-26172-6

Publication's open availability at the time of reporting: Open Access

Publication channel's open availability : Open Access publication channel

Web address : https://doi.org/10.1393/ncc/i2026-26172-6

Self-archived copy’s web address: https://research.utu.fi/converis/portal/detail/Publication/527107906

Self-archived copy's licence: CC BY

Self-archived copy's version: Publisher`s PDF

Abstract

We present a microscopic derivation of a master equation for two bosonic qubits tunneling between spatially separated modes under local dephasing, described by a Lorentzian spectrum. The resulting time-local equation reveals intrinsic non-Markovian features. When the bath central frequency is resonant with the tunneling amplitude, dephasing can drive the system toward a correlated steady state that sustains coherence and entanglement, as opposed to complete decoherence predicted by white noise models. These results provide a rigorous foundation for pure dephasing in bosonic tunneling systems and demonstrate how structured noise
can actively generate steady-state quantum correlations.

Downloadable publication

This is an electronic reprint of the original article.
This reprint may differ from the original in pagination and typographic detail. Please cite the original version.

ncc13628.pdf

Funding information in the publication:
RLF acknowledges support by MUR (Ministero dell’Universit`a e della Ricerca) through the following projects: PNRR Project ICON-Q-Partenariato Esteso NQSTIPE00000023-Spoke 2-CUP: J13C22000680006, PNRR Project QUANTIP-Partenariato Esteso NQSTI-PE00000023-Spoke 9-CUP: E63C22002180006, PNRR Project PRISMPartenariato Esteso RESTART-PE00000001-Spoke 4-CUP: C79J24000190004. AS acknowledges support from MUR and Next Generation EU via the PRIN 2022 Project “Quantum Reservoir Computing (QuReCo)” (contract No. 2022FEXLYB) and the NQSTI-Spoke1-BaC project QSynKrono (contract No. PE00000023-QuSynKrono). FN acknowledges support by the I+D+i project MADQuantum-CM, financed by the European Union NextGeneration-EU, Madrid Government and by the PRTR.