Abstract-Terahertz spectroscopy of quantum 2D electron systems

James Lloyd-Hughes

j.lloyd-hughes@warwick.ac.uk

University of Warwick, Department of Physics, Gibbet Hill Road, Coventry, CV4 7AL, UK 

http://iopscience.iop.org/0022-3727/47/37/374006

Terahertz time-domain spectroscopy permits the coherent motion of charges to be examined in a diverse range of two-dimensional semiconductor heterostructures. Studies of the THz conductivity and magnetoconductivity of two-dimensional quantum systems are reviewed, including cyclotron resonance spectroscopy and the transverse conductivity in the Hall and quantum Hall regimes. Experiments are described that demonstrate quantum phenomena at THz frequencies, principally coherent control and enhanced light–matter coupling in electromagnetic cavities.