Cited by 263Quantum Information and CryptographyCoding theory and cryptographyQuantum Computing Algorithms and Architecture

A Concise Guide to Complex Hadamard Matrices

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Tadej, Wojciech, Życzkowski, Karol·2006·Open Systems & Information Dynamics

Abstract

Complex Hadamard matrices, consisting of unimodular entries with arbitrary phases, play an important role in the theory of quantum information. We review basic properties of complex Hadamard matrices and present a catalogue of inequivalent cases known for the dimensions N = 2,…,16. In particular, we explicitly write down some families of complex Hadamard matrices for N = 12, 14 and 16, which we could not find in the existing literature.

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Crossref · 10.1007/s11080-006-8220-2

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53 of 53 references verified0 citation errors · 0 not checkable

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  • While a full classification of N = 6 CHMs is unknown, it is currently conjectured that the set consists of an isolated matrix S6^(0) which does not belong to any family, and a newly discovered four-parameter generic family G6^(4).

    “Whilst a full classification of N = 6 CHMs is unknown, it is currently conjectured that the set consists of an isolated matrix S (0) 6 which does not belong to any family [57], and a newly discovered four-parameter generic family G (4) 6 [58].”

    From Universal linear optics (2015) · cites this paper as [58]

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Authors
Tadej, W., & Życzkowski, K.
Affiliations
  • Cardinal Stefan Wyszynski University in Warsaw (PL)
  • Jagiellonian University (PL)
Venue
Open Systems & Information Dynamics
Published
2006-06
Volume
13
Issue
02
Pages
133-177
ISSN
  • 1230-1612 (ISSN-L)
  • 1793-7191
OpenAlex
W2039842791
Cited by
263
References
55
Citations by year
2026: 6 · 2025: 13 · 2024: 13 · 2023: 10 · 2022: 7 · 2021: 10 · 2020: 10 · 2019: 21 · 2018: 14 · 2017: 10 · 2016: 13 · 2015: 14 · 2014: 15 · 2013: 16 · 2012: 15
FWCI
17.85
Type
journal article
Language
en
Open access
Locations
  • Open Systems & Information Dynamics (publishedVersion)
  • arXiv (Cornell University) (submittedVersion)
  • CERN Document Server (European Organization for Nuclear Research) (submittedVersion)
  • arXiv (Cornell University)
Funders
Institut Périmètre de physique théorique
Topics
  • Physical Sciences › Computer Science › Artificial Intelligence › Quantum Information and Cryptography
  • Physical Sciences › Computer Science › Artificial Intelligence › Coding theory and cryptography
  • Physical Sciences › Computer Science › Artificial Intelligence › Quantum Computing Algorithms and Architecture
Keywords
complex Hadamard matrices, unimodular matrices, quantum information, finite-dimensional quantum systems, matrix families

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