Excited states of coherent state and their nonclassical properties
โ Scribed by Lianfu Wei; Shunjin Wang; Quanlin Jie
- Publisher
- Springer
- Year
- 1997
- Tongue
- English
- Weight
- 179 KB
- Volume
- 42
- Category
- Article
- ISSN
- 1001-6538
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๐ SIMILAR VOLUMES
Intermediate states interpolating coherent states and Pegg-Barnett phase states are investigated using the ladder operator approach. These states reduce to coherent and Pegg-Barnett phase states in two different limits. Statistical and squeezing properties are studied in detail.
We construct even and odd nonlinear coherent states of a parametric oscillator and examine their nonclassical properties. It has been shown that these superpositions exhibit squeezing and photon antibunching which change with time.
Nonclassical features of the superposition of two coherent states which are p/2 out of phase are discussed, such as sub-Poissonian photon statistics and quadrature squeezing, as well as negativity of the Wigner function. Special nonclassicality is found in the special state where the relative phase