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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The company is also trying to position itself at the center of emerging technologies like robots, quantum computers and self-driving cars. Rosa De Acosta, CNN Money, 7 Feb. 2026 Hardware-independent security Current encryption methods are potentially vulnerable to the computational capabilities of future quantum computers. Aman Tripathi, Interesting Engineering, 5 Feb. 2026 While quantum computers continue to slowly grind towards usefulness, some are pursuing a different approach—analog quantum simulation. IEEE Spectrum, 4 Feb. 2026 There are several fundamentally different ways of building quantum computers and there remains active debate among scientists about which technologies will ultimately prove commercially viable. Jeremy Kahn, Fortune, 4 Feb. 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 14 Feb. 2026.

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