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Quantum entanglement: “spooky action at a distance” in the lab and in black holes

The Indian Institute of Technology Bombay organised an Institute

Lecture on Friday, January 10, 2020. The details of the lecture are given

below:

 

Title   : Quantum entanglement: “spooky action at a distance” in the

                 lab and in black holes

 

Speaker :      Prof. Subir Sachdev, Department Chair, Herchel Smith Professor of Physics

                     Harvard University, USA

 

Day & Date:    Friday, January 10, 2020

 

Time      : 5.15 pm

 

Venue     : F.C. Kohli Auditorium, KReSIT

 

Abstract:

The strangest feature of the quantum theory was dubbed “spooky action at

a distance” by Einstein. Today, we have convincing evidence that quantum

particles far apart can entangle with each other, so that the observation

of one can instantaneously determine the state of the other. The speaker

described how this quantum feature is playing a central role in many modern

developments in physics. Quantum entanglement can occur on a macroscopic

scale with trillions of electrons, leading to new forms of matter with

properties of technological importance. In high temperature

superconductors, such as YBa2Cu3O7, there appears to be a “quantum

critical point” whose entanglement structure is being explored by

experiment and theory. Related entanglement structures arise across black

hole horizons, and recent advances have shed new light on Hawking’s

information paradox. He used simple models of entanglement to describe

these mutually beneficial developments across different fields of physics.

 

About the speaker:

Prof. Subir Sachdev is currently the Chair, Physics Department, Harvard

University, USA and holds the Herchel Smith Professorship. He has also

held various other positions of honor such as Stanley S. Hanna Visiting

Professor at Stanford University, Homi Bhabha Chair Professor at TIFR

among others. He has received various honors/prizes such as Dirac Medal of

the ICTP Trieste, Lars Onsagers Prize, Star Family Prize, Lorentz Chair.

He has been associated with various academies of science and engineering

across the globe.