A theoretical physicist who formulated a universal quantum-computing model and continues to investigate the physical foundations of information, computation and the possibilities of scientific explanation.
University of OxfordProceedings of the Royal Society A; copy hosted by Princeton UniversityarXiv / Proceedings of the Royal Society ADeutsch’s work places computation inside physics. His 1985 paper described a quantum generalization of a universal computing machine, helping establish quantum computation as a distinct research program. His later work with Chiara Marletto examines information through the physical transformations that are possible or impossible. These contributions offer a conceptual foundation for understanding why quantum machines are different and why their capabilities must be stated in terms of explicit physical and mathematical assumptions.
University of OxfordProceedings of the Royal Society A; copy hosted by Princeton UniversityarXiv / Proceedings of the Royal Society AThe work behind the recognition
Work, in context- 1985
A universal quantum computer
Deutsch formulated a quantum generalization of the universal computing machine and explored its relation to the Church–Turing principle. The paper connected questions about computation to the laws governing physical systems, rather than treating computation as independent of physics.
Author of the 1985 universal quantum-computer paper.
Source-supported recordProceedings of the Royal Society A; copy hosted by Princeton University - 2014
Constructor theory of information
Deutsch and Chiara Marletto proposed a formulation of information in terms of possible and impossible physical transformations. Their paper examined connections between classical and quantum information, including distinguishability, cloning, measurement and entanglement, as a foundational research proposal.
Joint author of the foundational information-theory proposal with Chiara Marletto.
Source-supported recordarXiv / Proceedings of the Royal Society A
Keep in perspective
Constructor theory is described as a research proposal, not an experimentally established replacement for quantum theory.
The evidence map
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A universal quantum computer
Quantum theory, the Church–Turing principle and the universal quantum computer
Supports: Original 1985 article; author, universal quantum-computer model and physical computation argument. First article page visually inspected.
Published 1985 · Checked 19 Sept 2026Credit & limits: Author of the 1985 universal quantum-computer paper.
Read the full contribution| Contribution | Evidence & what it supports | Credit & limits |
|---|---|---|
| A universal quantum computer1985 | Primary paperQuantum theory, the Church–Turing principle and the universal quantum computer Original 1985 article; author, universal quantum-computer model and physical computation argument. First article page visually inspected. Published 1985 · Checked 19 Sept 2026 | Author of the 1985 universal quantum-computer paper. |
| Constructor theory of information2014 | Primary paperConstructor Theory of Information Deutsch–Marletto proposal and physical-transformation formulation. Published 21 May 2014 · Checked 19 Sept 2026 | Joint author of the foundational information-theory proposal with Chiara Marletto. |
Follow the evidence
3 sourcesPrimary papers, institutional records and attributed announcements. Each source supports the claims linked above.
- University of OxfordInstitutional record
Professor David Deutsch
Current visiting professor identification and research areas.
Checked 19 Sept 2026 - Proceedings of the Royal Society A; copy hosted by Princeton UniversityPrimary paper
Quantum theory, the Church–Turing principle and the universal quantum computer
Original 1985 article; author, universal quantum-computer model and physical computation argument. First article page visually inspected.
Published 1985 · Checked 19 Sept 2026 - arXiv / Proceedings of the Royal Society APrimary paper
Constructor Theory of Information
Deutsch–Marletto proposal and physical-transformation formulation.
Published 21 May 2014 · Checked 19 Sept 2026