[Home ] [Archive]   [ فارسی ]  
:: Volume 20 - ::
ICOP & ICPET 2014, 20 - : 885-888 Back to browse issues page
Quantum Discord of two-qubit states
S. Javad Akhtarshenas Dr., Hamidreza Mohammadi Dr., Vahid Nassajpour Mr., Fahimeh S Mousavi Mrs. * 1
Abstract:   (3272 Views)
In this paper, we provide a simple relation for the conditional entropy as the difference of two Shannon entropies. This relation leads to an analytical formula for discord of some special two-qubit states and also it presents a tight upper bound for quantum discord of a general two-qubit state. We also present an analytical procedure of optimization and obtain conditions under which the quantum conditional entropy of a general two-qubit state is stationary.
Keywords: Quantum correlation, Quantum discord, Shannon entropy, Tight upper bound.
Full-Text [PDF 496 kb]   (839 Downloads)    
Type of Study: Research | Subject: Special
Send email to the article author

Add your comments about this article
Your username or Email:

CAPTCHA code


XML   Persian Abstract   Print


Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:

Akhtarshenas S J, Mohammadi H, Nassajpour V, Mousavi F S. Quantum Discord of two-qubit states. ICOP & ICPET. 2014; 20 :885-888
URL: http://opsi.ir/article-1-357-en.html


Volume 20 - Back to browse issues page
انجمن اپتیک و فوتونیک ایران Optics and Photonics Society of Iran
Persian site map - English site map - Created in 0.05 seconds with 30 queries by YEKTAWEB 3781