Tata Institute of Fundamental Research
An Attempt to Derandomize the Random Unitary Matrices Used for Decoupling in Quantum Information Theory
Project Seminar
Speaker:
Gowtham Raghunath Kurri
Organiser:
Jaikumar Radhakrishnan
Date:
Monday, 8 Dec 2014, 12:00 to 13:00
Venue:
D-406 (D-Block Conference Room)
(Scan to add to calendar)
Abstract:
Abstract: The correlation of a quantum system $A$ to an initially correlated system $E$ generally decreases when $A$ undergoes an evolution separated from $E$. Here we study the conditions under which the correlation disappears completely, resulting in a decoupling of $A$ from $E$. Decoupling is a general way to prove many coding theorems in quantum information theory. However existing decoupling constructions use random unitaries which are inefficient to implement. Hence the quest for derandomization.
| Speaker: | Gowtham Raghunath Kurri |
| Organiser: | Jaikumar Radhakrishnan |
| Date: | Monday, 8 Dec 2014, 12:00 to 13:00 |
| Venue: | D-406 (D-Block Conference Room) |
(Scan to add to calendar)
Abstract:
Abstract: The correlation of a quantum system $A$ to an initially correlated system $E$ generally decreases when $A$ undergoes an evolution separated from $E$. Here we study the conditions under which the correlation disappears completely, resulting in a decoupling of $A$ from $E$. Decoupling is a general way to prove many coding theorems in quantum information theory. However existing decoupling constructions use random unitaries which are inefficient to implement. Hence the quest for derandomization.