IISER MOHALI

Abstract: An overview on spin-squeezing and entanglement in permutation symmetric multiqubit states in terms of covariance matrix methods is given. Geometric visualization of permutation symmetric states in terms of Majorana star constellation and canonical steering ellipsoid, which sheds light on monogamy of entanglement, is discussed.

About the Speaker: Dr. A. R. Usha Devi , Senior Professor at the Department of Physics, Bangalore University, Bangalore has been carrying on her research and teaching for around 30 years. Her research interests are in the area of quantum information processing and quantum foundations. Professor Usha Devi was a M.Sc. gold medalist and she had won the Indian Physical Society (IPS) Young Physicist Award during the year 1997. During 2008 she was awarded the Commonwealth Fellowship and worked with the research group of Professor Sandu Popescu at Bristol University, Bristol. She was a member of the Editorial Board of Resonance, journal of science education published monthly by Indian Academy of Sciences. Dr. Usha Devi has published around 80 research papers in reputed international journals; guided around 10 Ph.D. students and she serves as a referee of national and international journals.