V2EX qubit

Qubit

释义 Definition

qubit(量子比特):量子计算中的基本信息单位。与经典比特只能是 0 或 1 不同,量子比特可以处于 0 和 1 的叠加态,并可通过纠缠与其他量子比特关联,从而实现某些计算任务的加速。(也常写作 q-bit

发音 Pronunciation (IPA)

/kjubt/

例句 Examples

A qubit can be 0 and 1 at the same time.
量子比特可以同时处于 0 和 1 的状态(叠加态)。

Because qubits can become entangled, measuring one may affect the state of another even far away.
由于量子比特可以发生纠缠,测量一个量子比特可能会影响另一个即使相距很远的量子比特的状态。

词源 Etymology

qubitquantum bit(量子 + 比特)的混成词/缩略造词,源于量子信息科学的发展(20 世纪末逐渐普及)。它用来强调这种信息单位遵循量子力学规律,而不仅是经典二进制逻辑。

相关词 Related Words

文学与作品 Literary Works

  • Michael A. Nielsen & Isaac L. Chuang,《Quantum Computation and Quantum Information》(量子计算与量子信息领域经典教材,频繁使用 qubit
  • Leonard Susskind & Art Friedman,《Quantum Mechanics: The Theoretical Minimum》(面向大众的量子力学读物中常以 qubit 讲解量子信息概念)
  • Jim Al-Khalili,《Quantum: A Guide for the Perplexed》(讨论量子现象与量子信息时会出现 qubit
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