Muthuganesan Rajendran
National Institute of Technology, Tiruchirappalli, India.
Title: Measurement induced nonlocality based on fidelity and its robustness against decoherence
Biography
Biography: Muthuganesan Rajendran
Abstract
Measurement induced nonlocality (MIN) – captures nonlocal (global) effects of bipartite state due to local von Neumann projective measurements, is an experimentally measurable quantum correlation measure. Due to the local ancilla problem, MIN is not a bonafide measure of quantum correlation. In order to resolve local ancilla problem, the definition of MIN modified using fidelity (F – MIN) between pre- and post- measurement states. Further, F – MIN is evaluated analytically for arbitrary pure state and two upper bounds are computed for m £ n dimensional mixed state. The closed formula of F – MIN is analytically derived for 2 £ n dimensional mixed state. Moreover, the dynamics of MIN and F – MIN are studied under noisy channels and it is shown that MINs are more robust to sudden death compared to entanglement.