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单词 qubit
释义

qubitn.

Brit. /ˈkjuːbɪt/, U.S. /ˈkjubət/
Origin: Formed within English, by compounding. Etymons: quantum n., bit n.4
Etymology: Irregularly < qu- (in quantum n.) + bit n.4, apparently punningly after cubit n.On the coining of the word compare:1995 B. Schumacher in Physical Rev. A. 51 2747/2 The term ‘qubit’ was coined in jest during one of the author's many intriguing and valuable conversations with W. K. Wootters, and became the initial impetus for this work.
Physics.
= quantum bit n. at quantum n. and adj. Compounds 2.
ΚΠ
1994 Nature 10 Feb. 514/1 Quantum physical bits are also called ‘qubits’, so we are trying to find the minimum number of qubits per quantum symbol.
1995 B. Schumacher in Physical Rev. A. 51 2739/2 In this paper we will prove a ‘quantum coding theorem’ that does allow..this interpretation [of quantum entropy]. This is accomplished by replacing the classical idea of a binary digit with a quantum two-state system, such as the spin of an electron. These quantum bits, or ‘qubits’ are the fundamental units of quantum information.
1998 Computer Weekly 19 Mar. 49/2 In quantum computing, qubits can be strung together so that with two there are four possible values (0, 1, 2 and 3) each with a probability of 0.25.
1999 Nature 25 Mar. 305/1 Nanometre-scale electronic devices..could be easily embedded in electronic circuitry and scaled up to provide the large numbers of qubits required for useful computations.
This is a new entry (OED Third Edition, March 2002; most recently modified version published online March 2022).
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n.1994
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