Photoelectron counting in quantum optics
Photoelectron counting in quantum optics
Photoelectron counting in quantum optics
You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
Coherence functionsExample for bunch<strong>in</strong>g: cavity mode a † <strong>in</strong> thermal bath (temperature β −1 )Mode angular frequency ω, damp<strong>in</strong>g κ.Master equation.Use <strong>quantum</strong> regression theorem.Long-time limit, t → ∞, n B = [e βω − 1] −1limt→∞ 〈a† (t)a(t + τ)〉 = n B e −(κ+iω)τ (12)limt→∞ 〈a† (t)a † (t + τ)a(t + τ)a(t)〉 = nB2 (1 + e−2κτ ) . (13)Thus, g (2) (τ) = 1 + e −2κτ and g (2) (τ) < g (2) (0): photon bunch<strong>in</strong>g.(cf. Carmichael book etc.)
Change language