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
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Given the rapid quantum progress, physicists say that switching out RSA and ECC for new cryptographic schemes that quantum computers can’t break is essential. Quanta Magazine, 3 Apr. 2026 In short, quantum computers are capable of performing many, many more calculations per second than current computers. Alan Henry, PC Magazine, 3 Apr. 2026 The prototype is a high-speed shortcut to the building blocks of future quantum computers and electronics. Tara Molina, CBS News, 2 Apr. 2026 While the results are theoretical, the researchers say the progress in neutral atom systems suggests practical quantum computers may arrive sooner than expected. Neetika Walter, Interesting Engineering, 1 Apr. 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

Browse Nearby Words

Cite this Entry

“Quantum computer.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/quantum%20computer. Accessed 5 Apr. 2026.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

More from Merriam-Webster