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Biunitary constructions in quantum information

Abstract:
We present an infinite number of construction schemes involving unitary error bases, Hadamard matrices, quantum Latin squares and controlled families, many of which have not previously been described. Our results rely on biunitary connections, algebraic objects which play a central role in the theory of planar algebras. They have an attractive graphical calculus which allows simple correctness proofs for the constructions we present. We apply these techniques to construct a unitary error basis that cannot be built using any previously known method.
Publication status:
Published
Peer review status:
Peer reviewed

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Institution:
University of Oxford
Department:
Computer Science
Oxford college:
Wolfson College
Role:
Author
More by this author
Institution:
University of Oxford
Division:
MPLS
Department:
Computer Science
Oxford college:
Wadham College
Role:
Author


Publisher:
Macquarie University
Journal:
Higher Structures More from this journal
Volume:
3
Issue:
1
Pages:
109-154
Publication date:
2019-03-01
Acceptance date:
2018-12-24
ISSN:
2209-0606


Pubs id:
pubs:959947
UUID:
uuid:f3f48ea8-c802-4ede-ab77-2122863904a1
Local pid:
pubs:959947
Source identifiers:
959947
Deposit date:
2019-01-15

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