| Original Articles |
|
|
|
|
A Simple Scheme for Directly Measuring the Wigner Functions of Cavity Fields |
| ZHANG Zhi-Ming |
| Department of Physics, Shanghai Jiao Tong University, Shanghai 200240
Max-Planck-Institute for Quantum Optics, Hans-Kopfermann-Str.1, D-85748 Garching, Germany |
|
| Cite this article: |
|
ZHANG Zhi-Ming 2003 Chin. Phys. Lett. 20 227-229 |
|
|
|
Abstract We propose a scheme for directly measuring the Wigner functions of cavity fields. The scheme is based on the Raman interaction between atoms and cavity fields. We find a simple and direct relation between the Wigner function and the atomic population difference. By suitably choosing the interaction time, we find that the Wigner function is just two times of the atomic population difference. Thus, one can obtain the Wigner function by measuring the atomic populations and calculating the population difference.
|
| Keywords:
42.50.Dv
42.50.Ct
03.65.Ta
03.65.Wj
|
|
|
Published: 01 February 2003
|
|
| PACS: |
42.50.Dv
|
(Quantum state engineering and measurements)
|
| |
42.50.Ct
|
(Quantum description of interaction of light and matter; related experiments)
|
| |
03.65.Ta
|
(Foundations of quantum mechanics; measurement theory)
|
| |
03.65.Wj
|
(State reconstruction, quantum tomography)
|
|
|
|
|
|
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
