Edinburgh Research Explorer

Parsimonious and robust realizations of unitary maps in the one-way model

Research output: Contribution to journalArticle

Related Edinburgh Organisations

Open Access permissions

Open

Documents

http://journals.aps.org/pra/abstract/10.1103/PhysRevA.72.064301
Original languageEnglish
Number of pages8
JournalPhysical Review A
Volume72
Issue number6
DOIs
Publication statusPublished - 6 Dec 2005

Abstract

We present a new set of generators for unitary maps over \otimes^n(C^2) which differs from the traditional rotation-based generating set in that it uses a single-parameter family of 1-qubit unitaries J(a), together with a single 2-qubit unitary controlled-Z.
Each generator is implementable in the one-way model using only two qubits, and this leads to both parsimonious and robust implementations of general unitaries. As an illustration, we give an implementation of the controlled-U family which uses only 14 qubits, and has a 2-colourable underlying entanglement graph (known to yield robust entangled states).

Download statistics

No data available

ID: 25070305