Southwest Quantum Information and Technology

Exploring the effect of quantum darwinism

Presenting Author: Madhav Tiwari, Queen's University Belfast
Contributing Author(s): Professor Mauro Paternostro

The measurement problem is arguably one of the most studied, debated, and still controversial problems of quantum foundations. Yet, it is at the very basis of crucial phenomena such as the quantum-to-classical transition. Quantum Darwinism shows the possibility of shedding light on the mechanism underlying the occurrence of the quantum-to-classical transition by considering the emergence of pointer states from quantum superpositions affected by the influences of an environment. Here we are showing the emergence of Quantum Darwinism i.e., redundancy of information about the system in the fragments of the environment using a collisional model where dephasing interactions among the elements of the environment affecting a quantum system are allowed. We analyze the difference in the phenomenology of Quantum Darwinism, whose paradigm excludes environment-environment interactions. In such conditions, we highlight the emergence of an interesting delay in the formation of the information plateau in the typical redundancy plots that are used to characterize the occurrence of Darwinism.

(Session 5 : Thursday from 12:00pm-2:00 pm)