OpenAI reports the entropy photon-number inequality
- Mathematics
- Theoretical Physics
For two independent finite-mean-energy bosonic inputs with any finite positive number of modes, beam-splitter output satisfies N(ρC)≥ηN(ρA)+(1−η)N(ρB) for 0≤η≤1, where N(ρ)=g⁻¹(S(ρ)/n) is entropy photon number per mode.