V2EX circuit qed

Circuit QED

Definition / 定义

Circuit QED(电路量子电动力学)指一种研究框架:用超导电路(如超导量子比特)来实现并研究类似“腔量子电动力学(cavity QED)”中的光物质相互作用,通常发生在微波谐振腔/传输线谐振器与量子比特之间。该领域是超导量子计算与量子光学的重要基础。(“QED”在此多指 quantum electrodynamics 的缩写。)

Pronunciation / 发音

/skt kju i di/

Examples / 例句

Circuit QED often uses superconducting qubits coupled to microwave resonators.
电路量子电动力学常用与微波谐振器耦合的超导量子比特。

In the dispersive regime of circuit QED, the qubit state can be inferred from a cavity frequency shift without directly exciting the qubit.
在电路量子电动力学的色散区间中,可以通过腔体频率的偏移来推断量子比特状态,而不必直接激发量子比特。

Etymology / 词源

Circuit 源自拉丁语 circuitus(“环行、回路”),在现代英语中常指“电路/回路”。QED 原本也常被理解为拉丁语缩写 quod eratdemonstrandum(“证毕”),但在物理语境里更常用作 Quantum Electrodynamics(量子电动力学) 的缩写。Circuit QED 这个术语是仿照 cavity QED(腔QED) 命名的:把原子光场系统换成“超导电路微波场”的可控平台。

Related Words / 相关词

Literary Works / 文学作品

  • Quantum Computation and Quantum Information(Nielsen & Chuang)在介绍物理实现方案时涉及与电路量子电动力学相关的超导量子比特背景。
  • Superconducting Circuits for Quantum Information: An Outlook(Schoelkopf & Girvin 等综述性著作/章节)讨论电路QED与超导量子信息处理的核心概念。
  • Cavity Quantum Electrodynamics(相关经典专著与综述)虽以腔QED为主,但常作为电路QED命名与概念类比的来源。
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