Tuesday March 26 10:00 am QNC:B201
Speaker:Ivette Fuentes (University of Nottingham)
Title: Quantum information processing in spacetime
Cutting-edge experiments in quantum communications are reaching
regimes where relativistic effects can no longer be neglected. For
example, there are advanced plans to use satellites to implement
teleportation and quantum cryptographic protocols. Relativistic
effects can be expected at these regimes: the Global Positioning
System (GPS), which is a system of satellites that is used for time
dissemination and navigation, requires relativistic corrections to
determine time and positions accurately.
Therefore, it is timely to understand what are the effects of
gravity and motion on entanglement and other quantum properties
exploited in quantum information.
In this talk I will show that entanglement can be created or
degraded by gravity and non-uniform motion. While relativistic
effects can degrade the efficiency of teleportation between moving
observers, the effects can also be exploited in quantum information.
I will show that the relativistic motion of a quantum system can be
used to perform quantum gates. Our results, which will impact
future space-based experiments, can be demonstrated in table-top
experiments using superconducting circuits.
Official website:
http://gplus.to/qplus