Wigner function and the entanglement of a quantized Bessel-Gaussian vortex state of a quantized radiation field
Abstract
A new kind of quantum non-Gaussian state with a vortex structure, termed a Bessel—Gaussian vortex state, is constructed, which is an eigenstate of the sum of squared annihilation operators a2 + b2. The Wigner function of the quantum vortex state is derived and exhibits negativity which is an indication of nonclassicality. It is also found that a quantized vortex state is always in entanglement. And a scheme for generating such quantized vortex states is proposed.
- Publication:
-
Chinese Physics B
- Pub Date:
- August 2012
- DOI:
- 10.1088/1674-1056/21/8/084204
- Bibcode:
- 2012ChPhB..21h4204Z