quantum computer

noun

: a computer that takes advantage of the quantum properties of qubits to perform certain types of calculation extremely quickly compared to conventional computers
quantum computing noun
A "geek at heart," Samet, 34, is fascinated by quantum computing, a still-emerging field that involves the behavior of subatomic particles in computing. Karen Breslau

Examples of quantum computer in a Sentence

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In theory, quantum computers could do that math instantly. Tom Chivers, semafor.com, 27 Mar. 2026 Silicon remains a strong candidate for scaling quantum computers because it is already widely used in semiconductor manufacturing, which could help future systems be produced more efficiently. Neetika Walter, Interesting Engineering, 27 Mar. 2026 Unlike conventional computers, which store information as 0s and 1s, quantum computers use qubits, fundamental units of information that can exist in multiple states simultaneously, enabling them to perform calculations that would take conventional computers millions of years to complete. Etiido Uko march 23, New Atlas, 23 Mar. 2026 Researchers have raced to build powerful quantum computers and identified connections to seemingly unrelated topics in fundamental physics. Ben Brubaker, Quanta Magazine, 18 Mar. 2026 See All Example Sentences for quantum computer

Word History

First Known Use

1982, in the meaning defined above

Time Traveler
The first known use of quantum computer was in 1982

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Cite this Entry

“Quantum computer.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/quantum%20computer. Accessed 1 Apr. 2026.

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