The wiring sets a phase-blind quantum memory's gap, the weight caps its coherence

This paper demonstrates that in engineered dissipation systems where quantum jumps reset a specific basis state, the wiring configuration determines the memory's energy gap and coherence time while leaving the phase decay rate invariant, revealing that multi-qubit contrasts fade faster than single qubits with a ceiling of two over the spanned qubits, though a two-branch pump can overcome this limitation at a distance of three.

Original authors: Ruini Qian, Zhaobin Lyu, Zelong Yin, Jingjing Hu, Dengfeng Li, Shuoming An