Photoelectron counting in quantum optics
Photoelectron counting in quantum optics
Photoelectron counting in quantum optics
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Formal solutionGenerat<strong>in</strong>g operator G, ‘damper’ L 0 , ‘jumper’ J.Write ∂ t G = L 0 G + sJG, G(s, t) ≡ ∑ ∞t .L 0 X ≡ YX + XY † , Y ≡ −iH 0 − 1 ∑2 QQ ′ γ QQ ′a† Q a Q ′.JX ≡ ∑ QQ ′ γ QQ ′a Q ′Xa† Q .m=0 sm χ (m)S<strong>in</strong>gle-mode case first for simplicity (A(t) ≡ e −Yt ae Yt ):˜ρ (m)t = γ m ∫ t0ρ (m)t = γ m ∫ t0∫ t2dt m ...dt m ...0∫ t20dt 1 A(t m )...A(t 1 )χ(0)A † (t 1 )...A † (t m )dt 1 e Yt A(t m )...A(t 1 )χ(0)A † (t 1 )...A † (t m )e Y †t .