About QUINST

Quantum mechanics is at the heart of our technology and economy - the laser and the transistor are quantum devices - but its full potential is far from being realized. Recent technological advances in optics, nanoscience and engineering allow experimentalists to create artificial structures or put microscopic and mesoscopic systems under new manipulable conditions in which quantum phenomena play a fundamental role.

Quantum technologies exploit these effects with practical purposes. The objective of Quantum Science is to discover, study, and control quantum efects at a fundamental level. These are two sides of a virtuous circle: new technologies lead to the discovery and study of new phenomena that will lead to new technologies.

Our group's aim is  to control and understand quantum phenomena in a multidisciplinary intersection of  Quantum Information, Quantum optics and cold atoms, Quantum Control, Spintronics, Quantum metrology, Atom interferometry, Superconducting qubits and Circuit QED and Foundations of Quantum Mechanics.

 

 

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Dr. André Carvalho (The Australian National University) (Seminar)

When end where

12/2012

Description

2011/06/15, Dr. André Carvalho (The Australian National University)
Place:  Sala de Seminarios del Departamento de Física Teórica e Historia de la Ciencia
Time: 12h
Title: Heat it up and watch! A strategy to protect distant entanglement.

Abstract
In composed quantum systems, the presence of local dissipative channels causes loss of coherence and entanglement at a rate that grows with the temperature of the reservoirs. Here, we invert the role of dissipation by showing how the creation of artificial temperature, together with the ability to monitor the subsystems locally, can be used to preserve the entanglement of the system. The scheme, being based only on local measurements and operations, opens the possibility to preserve entanglement over long distances and also between different nodes of a network composed of multiple qubits.