Results on two-bit gate design for quantum computers

David P. DiVincenzo; John Smolin

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arXiv · cond-mat/9409111

Results on two-bit gate design for quantum computers

David P. DiVincenzo·John Smolin

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Abstract

We present numerical results which show how two-bit logic gates can be used in the design of a quantum computer. We show that the Toffoli gate, which is a universal gate for all classical reversible computation, can be implemented using a particular sequence of exactly five two-bit gates. An arbitrary three-bit unitary gate, which can be used to build up any arbitrary quantum computation, can be implemented exactly with six two-bit gates. The ease of implementation of any particular quantum operation is dependent upon a very non-classical feature of the operation, its exact quantum phase factor.

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David P. DiVincenzo, John Smolin. 1994-09-26. Results on two-bit gate design for quantum computers. https://arxiv.org/abs/cond-mat/9409111

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