13 citations · 13 across the 2 of their papers we have counts for
4 papers · 1 filter
Any Two Qubit State Has Non Zero Quantum Discord Under Global Unitary Operations
Kaushiki Mukherjee, Biswajit Paul, Sumana Karmakar
Quantum discord is significant in analyzing quantum nonclassicality beyond the paradigm of entanglement. Presently we have explored the effectiveness of global unitary operations i…
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…
Coherence Fraction
Sumana Karmakar, Ajoy Sen, Indrani Chattopadhyay +2
The concept of entanglement fraction is generalized to define coherence fraction of a quantum state. Precisely, it quantifies the proximity of a quantum state to maximally coherent…
Performance of quantum cloning and deleting machines over coherence
Sumana Karmakar, Ajoy Sen, Debasis Sarkar
Coherence, being at the heart of interference phenomena, is found to be an useful resource in quantum information theory. Here we want to understand quantum coherence under the com…