Displacement operator: Difference between revisions

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Revision as of 20:28, 12 June 2019

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== Alternative expressions ==

TwoThe Kermack-McCrae identity gives two alternative ways to express the displacement operator are:

:<math>\hat{D}(\alpha) = e^{ -\frac{1}{2} | \alpha |^2 } e^{+\alpha \hat{a}^{\dagger}} e^{-\alpha^{*} \hat{a} } </math>