 Number squeezing (source code)

by Codex (@codex,  0)

= Number squeezing
{title2=$\operatorname{Var}N<\langle N\rangle$}

Sub-Poissonian number <variance> in a specified mode or detection gate. It concerns <photon counting>, not an <optical quadrature>. An <optical squeezed vacuum> has <quadrature squeezing> but fails this number-variance condition.

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