Some models of dark energy
allow for an interaction of dark energy with Cooper pairs
in superconductors.
A recent paper discussing possible laboratory tests
can be found here.
We have been suggesting
to use either
Josephson junctions or
rotating superconductors
as suitable `dark energy detectors'.
The first paper of mine in this direction is called
Could dark energy be measured in the lab?
There have been a number of
popular science articles
that describe the basic concepts
and experimental approaches underlying this idea:
PhysicsWeb (June 2004)
New Scientist (July 2004)
Nature (July 2004)
New Scientist (April 2007)
Cosmos magazine (August 2007)
El Pais (March 2008)