A2 Refereed review article in a scientific journal

How many orthonormal bases are needed to distinguish all pure quantum states?



Authors: Claudio Carmeli, Teiko Heinosaari, Jussi Schultz, Alessandro Toigo

Publisher: SPRINGER

Publication year: 2015

Journal: European Physical Journal D

Journal name in source: EUROPEAN PHYSICAL JOURNAL D

Journal acronym: EUR PHYS J D

Article number: 179

Volume: 69

Issue: 7

Number of pages: 11

ISSN: 1434-6060

DOI: https://doi.org/10.1140/epjd/e2015-60230-5


Abstract

We collect some recent results that together provide an almost complete answer to the question stated in the title. For the dimension d = 2 the answer is three. For the dimensions d = 3 and d >= 5 the answer is four. For the dimension d = 4 the answer is either three or four. Curiously, the exact number in d = 4 seems to be an open problem.




Last updated on 2024-26-11 at 15:55