| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 978746 | Physica A: Statistical Mechanics and its Applications | 2011 | 6 Pages |
Abstract
In this paper, we employ the technique of integration within an ordered product of operators (IWOP) to derive a generalized two-mode thermal vacuum state (GTTVS) for the Hamiltonian of a parametric amplifier. Application of GTTVS in calculating the ensemble average is discussed. The result is in agreement with that obtained by using the generalized Hellmann-Feynmann theorem.
Related Topics
Physical Sciences and Engineering
Mathematics
Mathematical Physics
Authors
Xue-xiang Xu, Hong-yi Fan, Li-yun Hu, Hong-chun Yuan,