Professor Artur Ekert FRS: Publications

Quantum Computation - Theory and Experiments

Japan Society of Applied Physics (1999)

Decoherence and recoherence in quantum computation

QUANTUM COHERENCE AND DECOHERENCE (1999) 7-12

Authors:

DP DiVincenzo, A Ekert

The hidden subgroup problem and eigenvalue estimation on a quantum computer

QUANTUM COMPUTING AND QUANTUM COMMUNICATIONS 1509 (1999) 174-188

Authors:

M Mosca, A Ekert

What does quantum physics tell us about computation?

GROUNDING EFFECTIVE PROCESSES IN EMPIRICAL LAWS (1999) 49-65

Authors:

A Ekert, R Lupacchini

Optimal purification of single qubits

ArXiv quant-ph/9812075 (1998)

Authors:

JI Cirac, AK Ekert, C Macchiavello

Abstract:

We introduce a new decomposition of the multiqubit states of the form $\rho^{\otimes N}$ and employ it to construct the optimal single qubit purification procedure. The same decomposition allows us to study optimal quantum cloning and state estimation of mixed states.

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