S
Stephen S. Bullock
Researcher at National Institute of Standards and Technology
Publications - 31
Citations - 1736
Stephen S. Bullock is an academic researcher from National Institute of Standards and Technology. The author has contributed to research in topics: Qubit & Quantum circuit. The author has an hindex of 18, co-authored 31 publications receiving 1439 citations. Previous affiliations of Stephen S. Bullock include Institute for Defense Analyses.
Papers
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Journal ArticleDOI
Synthesis of quantum-logic circuits
TL;DR: Efficient quantum-logic circuits that perform two tasks are discussed: 1) implementing generic quantum computations, and 2) initializing quantum registers that are asymptotically optimal for respective tasks.
Journal ArticleDOI
Minimal universal two-qubit controlled- NOT -based circuits
TL;DR: In this paper, the authors give quantum circuits that simulate an arbitrary two-qubit unitary operator up to a global phase, and prove that gate counts are optimal in the worst and average cases.
Proceedings ArticleDOI
Synthesis of quantum logic circuits
TL;DR: Efficient quantum-logic circuits that perform two tasks are discussed: 1) implementing generic quantum computations, and 2) initializing quantum registers that are asymptotically optimal for respective tasks.
Journal Article
Minimal universal two-qubit controlled-NOT-based circuits (8 pages)
TL;DR: For several quantum gate libraries, this work gives quantum circuits that simulate an arbitrary two-qubit unitary operator up to a global phase and proves that gate counts are optimal in the worst and average cases.
Journal ArticleDOI
Asymptotically optimal quantum circuits for d-level systems.
TL;DR: Both a lower bound and a constructive upper bound on the number of two-qudit gates result, proving a sharp asymptotic of theta(d(2n)) gates, which closes the complexity question for all d-level systems (d finite).