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.

 

 

Latest events

province:

Dr. Zoltan Kurucz (Wigner Research Cetre for Physics, Budapest) (Seminar)

When end where

12/2013

Description

2012/12/10, Dr. Zoltan Kurucz (Wigner Research Cetre for Physics, Budapest)


Place: Seminar Room of Theoretical Physics Department
Time: 12h
Title: Spin squeezing of multilevel atoms
 
 
Abstract

We show that an ensemble of identical d-level atoms can be efficiently described by d-1 collective oscillator degrees of freedom in the vicinity of a product state. We apply our description to two kinds of spin squeezing having essentially different entanglement properties: (i) hen each spin-F atom is individually squeezed and (ii) when a particular collective atomic oscillator mode is squeezed. When combined in sequence, the order of the two methods is relevant in the final degree of squeezing.

 [1] Z. Kurucz and K. Mølmer, Phys. Rev. A 81, 032314 (2010).