V2EX cnot

CNOT

释义 Definition

CNOT(Controlled-NOT gate,受控非门/受控NOT门):量子计算中常用的两比特量子逻辑门。当“控制比特”为 |1 时,对“目标比特”施加 NOT(等同于 Pauli-X 翻转);当控制比特为 |0 时,目标比特不变。它也是构造纠缠态(如贝尔态)的关键门之一。

发音 Pronunciation

/sint/(常见读法)

例句 Examples

A CNOT gate flips the target qubit when the control qubit is 1.
当控制量子比特为1时,CNOT门会翻转目标量子比特。

By applying a Hadamard gate followed by a CNOT, the circuit can generate an entangled Bell state from two qubits.
先施加Hadamard门再接一个CNOT门,该电路可以用两个量子比特生成一个纠缠的贝尔态。

词源 Etymology

CNOT 是缩写,来自 Controlled-NOT:意思是“受控的 NOT(非)操作”。在经典电路中,类似思想对应“受控翻转”;在量子电路中则以量子态与叠加/纠缠为背景来定义与使用。

相关词 Related Words

文学与著作 Literary Works

  • Quantum Computation and Quantum Information(Michael A. Nielsen & Isaac L. Chuang)
  • Quantum Computing for Computer Scientists(Noson S. Yanofsky & Mirco A. Mannucci)
  • Quantum Computing Since Democritus(Scott Aaronson)
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