Quantum fluctuation of mesoscopic distributed parameter circuits

• 来源期刊: 中国物理（英文版）
• 关键词: mesoscopic distributed parameter circuit quantization quantum fluctuation
• 年，卷（期）: 2004,（10）
• 页码范围: 1766-1769
• 页数: 4页
• 语种: 英文

摘要

Under the Born-von-Karmann periodic boundary condition, we propose a quantization scheme for a non-dissipative distributed parameter circuit (a uniform transmission line). Quantum fluctuations of charge and current in the vacuum state are investigated by adopting the canonical transformation and unitary transformation method. Our results indicate that in distributed parameter circuits, quantum fluctuations, which also have distributed properties, are related to both the circuit parameters and the positions and the mode of signals.