Vänskä O, Tittonen I, Koch SW, Kira M. Coherent terahertz control of vertical transport in semiconductor heterostructures.
PHYSICAL REVIEW LETTERS 2015;
114:116802. [PMID:
25839300 DOI:
10.1103/physrevlett.114.116802]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2014] [Indexed: 06/04/2023]
Abstract
Coherent-control protocols are introduced to selectively transport electrons, excitons, or pure two-particle correlations through semiconductor interfaces. The scheme is tested in a double-quantum-well structure where a sequence of terahertz pulses is applied to induce the vertical excitation transfer between the wells. Using a microscopic theory, it is shown that efficient and highly selective transfer can be realized even in the presence of the unavoidable scattering and dephasing processes.
Collapse