SEMINAR @ SISSA, P. Cappellaro, Jan. 13, 2009 at 15 hrs.

[Barbara Corzani]

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FUNCTIONAL ANALYSIS SECTOR'S ACTIVITIES
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SEMINAR 

Dott. 
Paola Cappellaro
(Harvard University)


Title:
"Coherent control of quantum information devices"

Tue. 13 Jan. 2009  @  03.00 p.m.

SISSA - Main Building - ground floor - room B

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Abstract:
The development of new technologies at scales approaching the quantum 
regime is driving new theoretical and experimental research on control in 
quantum systems. The implementation of quantum control would have an 
enormous impact on a wide range of fields, in particular in quantum 
information processing and precision metrology.
In this talk I will present the application of coherent control techniques 
to the electronic and nuclear spins associated with Nitrogen-Vacancy (NV) 
centers in diamond. These systems have emerged as excellent candidates for 
quantum information processing, since they can be optically polarized and
detected, and present good coherence properties even at room temperature.
I will first show how this solid state system can be used as the building 
block of a scalable architecture for quantum computation or communication.
Then I will present a novel approach to magnetometry, based on NV centers, 
that takes advantage of coherent control techniques and the confinement of 
the sensing spins into a sample of nanometer dimensions. The resulting 
magnetic sensor is projected to yield an unprecedented combination of
ultra-high sensitivity and spatial resolution, with the potential of 
exciting applications in bio-science, materials science, and single 
electronic and nuclear spin detection.