F. Borrelli

Spectral Twisting in a Common Bosonic Reservoir: Fragility of Two-Qubit Dark-State Protection

The interaction of two qubits with a common bosonic reservoir is encoded by a matrix-valued spectral density $\mathbf{J}(\omega)$, whose diagonal entries describe the local spectra, while the off-diagonal entries encode cross-correlations. Even when \(\mathbf{J}(\omega)\) has rank one, a frequency-independent dark chan...