18 citations
3 papers
quant-ph2019★ 2 cited
Detecting Two Qubit Both-Way Positive Discord States
Kaushiki Mukherjee, Sumana Karmakar, Biswajit Paul +1
Quantum discord plays a pragmatic role in analyzing nonclassical feature of quantum correlations beyond entanglement. It is used in several information processing protocols which l…
quant-ph2015★ 18 cited
On Strong Monogamy Conjecture in Four-Qubit System
Sumana Karmakar, Ajoy Sen, Amit Bhar +1
Monogamy is a defining feature of entanglement, having far reaching applications. Recently, Regula \textit{et.al.} in Phys. Rev. Lett. \textbf{113}, 110501(2014) have proposed a st…
quant-ph2015★ 9 cited
Revealing Hidden Genuine Tripartite Nonlocality
Biswajit Paul, Kaushiki Mukherjee, Debasis Sarkar
Nonlocal correlations arising from measurements on tripartite entangled states can be classified into two groups, one genuinely way nonlocal and other local with respect to som…