Dynamics of quantum resources under noisy spatial deformation of identical particles;
: Ferrara, A.; Nosrati, F.; Smirne, A.; Piilo, J.; Lo Franco, R.
Publisher: Società Italiana di Fisica
: 2026
Il Nuovo Cimento C - Colloquia on Physics
: 172
: 49
: 5-6
: 2037-4909
: 1826-9885
DOI: https://doi.org/10.1393/ncc/i2026-26172-6
: https://doi.org/10.1393/ncc/i2026-26172-6
: https://research.utu.fi/converis/portal/detail/Publication/527107906
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.
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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.
