摘要
A Hamiltonian which represents the interaction between a single Cooper-pair box and two quantized electromagnetic fields is considered in order to find new ways for quantum information. The wave function in Schrödinger picture is obtained. The evolution of the entropy of the box as a function of the scaled time is plotted to measure the entanglement between the box and the fields. It is found that the entanglement is sensitive to the detuning between the Josephson energy and the fields frequency, increasing the detuning can decrease the entanglement.
| 源语言 | 英语 |
|---|---|
| 页（从-至） | 115-118 |
| 页数 | 4 |
| 期刊 | Journal of Beijing Institute of Technology (English Edition) |
| 卷 | 15 |
| 期 | 1 |
| 出版状态 | 已出版 - 3月 2006 |