Year: 2026
Type: preprint
Abstract: We determine asymptotic global fidelities of cloning generic mixed states with simple (non-degenerate) full-rank spectra. In fixed dimension $d$, let $n$ inputs and $m_n$ outputs satisfy $m_n/n\toγ>1$. For a known simple full-rank spectrum $p_1>\cdots>p_d>0$, we prove that the optimal root fidelity between the entire output and the product target state is $$ F_\rm{orb}(γ,p) =\prod_{i
Source: arXiv (Cornell University)
Authors: Fei, Jiani, Wang, Jinzhao
Institutions: Stanford University, Zyphra (United States)
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
Funder: Army Research Office
OpenAlex ID: W7214919594