Professor Artur Ekert FRS: Publications

Approximate Quantum Fourier Transform and Decoherence

(1996)

Authors:

Adriano Barenco, Artur Ekert, Kalle-Antti Suominen, Päivi Törmä

Quantum computation

17TH CONGRESS OF THE INTERNATIONAL COMMISSION FOR OPTICS: OPTICS FOR SCIENCE AND NEW TECHNOLOGY, PTS 1 AND 2 2778 (1996) 748-751

Quantum computation

COHERENCE AND QUANTUM OPTICS VII (1996) 113-122

Authors:

A Barenco, A Ekert, GM Palma, KA Suominen

Pet theories in quantum mechanics

Physics World IOP Publishing 8:12 (1995) 46-47

Quantum Networks for Elementary Arithmetic Operations

ArXiv quant-ph/9511018 (1995)

Authors:

V Vedral, A Barenco, A Ekert

Abstract:

Quantum computers require quantum arithmetic. We provide an explicit construction of quantum networks effecting basic arithmetic operations: from addition to modular exponentiation. Quantum modular exponentiation seems to be the most difficult (time and space consuming) part of Shor's quantum factorising algorithm. We show that the auxiliary memory required to perform this operation in a reversible way grows linearly with the size of the number to be factorised.

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