Volume 17, Issue 4 Travis B. Russell A synchronous NPA hierarchy with applications Downloads Abstract PDF Full article PDF DOI { copied = true; setTimeout(() => copied = false, 2000) })" :aria-label="copied ? 'DOI copied' : 'Copy DOI'" :title="copied ? 'Copied' : 'Copy DOI'" > Find all available articles from these authors Travis B. Russell Find more articles with the same keywords semidefinite programming quantum correlations SIC-POVMs mutually unbiased base Find more articles with the same subject classes 46N50 90C22 81P45