Investigating Quantum Information Storage Using Reversible Inhomogeneous Broadening in Rare Earth Ion Doped Materials
Research School of Physical Sciences and Engineering, Australian National University.
Tuesday, 17th April 2007, 3.30PM, AGSE207, AGSE Building, Hawthorn.
Following the explosion of interest in quantum information processing
the field has now reached the point where a quantum memory is
becoming a real necessity for further improvements. The scheme
for a quantum memory investigated in this talk involves reversible
inhomogeneous broadening achieved via macroscopic electric field
gradients. The advantage that this scheme has over its competitors
is its simplicity. The scheme presented here requires no optical coupling
beams and the only light interacting with the sample is the light to be
stored. For that reason the scheme inherently suffers less from noise
than other quantum memory proposals.
These advantages meant that it was possible to demonstrate the first
optical memory using reversible inhomogeneous broadening via
macroscopic electric field gradients. Presented in this talk will be the results
achieved so far and a description of the simple improvements that will allow
for storage efficiencies in the quantum regime.
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