Department of Physics

Indian Institute Of Technology Madras , Chennai

Towards universal detection of bi-partite entanglement

Speaker : Prof. Sibasish Ghosh, The Institute of Mathematical Sciences, Chennai

2022-03-30

Abstract :

Entanglement in states of a composite (quantum) system -- consisting of far apart subsystems -- is considered to be the most important ingredient for achieving efficient information processing tasks in the quantum world. Unfortunately, maintaining entanglement among the subsystems is a challenging task as quantum systems are quite fragile to the interactions with their environments. As a result, witnessing entanglement in states of a given composite system is of fundamental importance before using the states for any information processing task. Unfortunately, any such entanglement witnessing scheme is state-dependent. On the other hand, for any experimentalist, it is always desirable to have a universal entanglement witnessing scheme which can detect entanglement in a reasonably large class of states of the system -- if not all the states of the system. In this talk I will briefly touch upon our recent efforts in the direction of universal witnessing of entanglement in specific bi-partite systems.

ABOUT THE SPEAKER:

Prof. Sibasish Ghosh completed his Ph.D. in the Physics and Applied Mathematics Unit (PAMU) of ISI-Kolkata and then spent six months (during middle of the year 2001 to the beginning of 2002) at the Univ. of California, Los Angeles (Electrical Engineering Dept.) as a Visiting Researcher. He worked for about one year in PAMU as an NBHM post-doctoral fellow, before joining (in March, 2003) The Institute of Mathematical Sciences (IMSc), Chennai as a post-doc in the Theoretical Physics group. Thereafter, he joined (in April, 2004) as a post-doc in the Computer Science department of the Univ. of York, United Kingdom in the group of Prof. Samuel Braunstein. He joined IMSc in July 2006 as a faculty in the Theoretical Physics group where he is currently a professor. His research interests include foundations of quantum mechanics, quantum information theory, open quantum systems, quantum thermodynamics, and quantum optics.

Key Speaker Prof. Sibasish Ghosh, The Institute of Mathematical Sciences, Chennai
Guests None
Place Online
Start Time 5:00 PM
Finish Time 6:00 PM
External Link ttps://iitmadras.webex.com/iitmadras/j.php?MTID=mf8c8afaa09d7e550f9ef60ac0b44dcdb