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Non-classicality and coherence of squeezed states

✍ Scribed by Reinhard Honegger; Alfred Rieckers

Publisher: Elsevier Science
Year: 2004
Tongue: English
Weight: 341 KB
Volume: 335
Category: Article
ISSN: 0378-4371
DOI: 10.1016/j.physa.2003.12.022

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✦ Synopsis

After having set up a concise frame for pure and mixed all-order coherent states, we let them undergo a rather general squeezing transformation. These squeezed states are always non-classical, but some-apparently experimentally preparable-of them are still second-order coherent. They combine peculiar properties of their quantum uctuations with the ordering features of coherence, and deserve special attention. Quite generally, several criteria for non-classicality are discussed and applied to the considered class of squeezed states. The connection between non-classicality and anti-bunching resp. sub-Poissonian photon statistics is shown to be more subtle than quantum optical usage suggests.

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