Photon number distributions and phase distributions of squeezed states Squeezed coherent state

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for amplitude squeezed light photon number distribution narrower 1 of coherent state of same amplitude resulting in sub-poissonian light, whereas phase distribution wider. opposite true phase-squeezed light, displays large intensity (photon number) noise narrow phase distribution. nevertheless, statistics of amplitude squeezed light not observed directly photon number resolving detector due experimental difficulty.



reconstructed , theoretical photon number distributions squeezed-vacuum state. pure squeezed vacuum state have no contribution odd-photon-number states. non-zero contribution in above figure because detected state not pure state - losses in setup convert pure squeezed vacuum mixed state. (source: link 1)



for squeezed vacuum state photon number distribution displays odd-even-oscillations. can explained mathematical form of squeezing operator, resembles operator two-photon generation , annihilation processes. photons in squeezed vacuum state more appear in pairs.








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