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

Recent Examples on the Web
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The facility is anchored by Switzerland’s first IBM quantum computer. — Aamir Khollam, Interesting Engineering, 25 Sep. 2026 Superconducting quantum computers only work when chilled to a hair above absolute zero, requiring the whole machine to sit inside an ultra-cold refrigerator called a cryostat, where space is tight and cooling is expensive. — New Atlas, 23 Sep. 2026 Until now, experts had estimated that at least 20 times that number of qubits would be needed—a figure that current quantum computers are still far from achieving. — Manon Bischoff, Scientific American, 22 Sep. 2026 This allows for error correction in quantum computers across operations without slowing execution time. — Sean Conlon,chloe Taylor,justina Lee,tobias Burns, CNBC, 22 Sep. 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 4 Oct. 2026.

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