Optical Device is More Than 100% Efficient(physics.aps.org)
physics.aps.org
Optical Device is More Than 100% Efficient
http://physics.aps.org/synopsis-for/10.1103/PhysRevLett.108.097403
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http://physics.aps.org/synopsis-for/10.1103/PhysRevLett.108.097403
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