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Dr. Jordi Mur-Petit

Instituto de Fisica Fundamental, IFF-CSIC (Madrid)

Friday, September 14th, 2012 at 03:00:00 PM  

Conference room Querzoli - LENS - via Nello Carrara 1 - Sesto Fiorentino (Florence)

Published on-line at 11:58:26 AM on Monday, September 10th, 2012

Measurement and control of molecular ions and polar molecules

A quantum logic spectroscopy generalization for probing and manipulation of polar molecules with trapped atomic ions.

Trapped atomic ions constitute one of the most advanced and promising physical systems to implement Quantum Information Processing and Computation (QIPC) protocols due to the exquisite experimental control, low decoherence rates, and the precise theoretical understanding of the physics involved (see i.e. 10.1103/RevModPhys.75.281 and 10.1016/j.physrep.2008.09.003). Very recently, molecular ions have been trapped and cooled to the mK regime in well defined internal states (see i.e. 10.1038/nphys1604, 10.1038/nphys1605 and 10.1103/PhysRevLett.105.143001 and arXiv:1203.2153), opening a new window for precision spectroscopy of molecular species and quantum information with cold molecular ions. A first requirement for both applications is the ability to control and measure the state of molecular ions.

I will first review the ideas of quantum logic spectroscopy (10.1126/science.1114375) and fast quantum gates (10.1103/PhysRevLett.91.157901) to show how they can be used to design a fast, non-destructive and temperature-independent protocol (10.1103/PhysRevA.85.022308) suitable to probe electronic, vibrational, rotational and Zeeman transitions in complex ions.

Then, I will present a generalization of this protocol for hybrid ion-electric dipole systems, that shall allow for probing and manipulation of polar molecules with trapped atomic ions.

For further informations, please contact Dr. Chiara Fort.