Surface plasmon wave manipulated by quantum coherence of multilevel quantum dots
2014 (English)In: Progress In Electromagnetics Research Letters, ISSN 1937-6480, Vol. 45, 89-98 p.Article in journal (Refereed) Published
An EIT (electromagnetically induced transparency)-based prism coupler is suggested for realizing tunable reflection spectrum via quantum coherence of phases in a multilevel system, where destructive and constructive quantum interference will occur among multilevel transition pathways that are driven by two external control fields. In this prism coupler, a semiconductor-quantum-dot (SQD) medium layer, which can exhibit EIT and relevant quantum coherent effects, bounds the prism base, and the two external control fields are used to manipulate the probe field and the excited surface plasmon wave (on the SQD layer surface). Then the surface plasmon wave modes, which are generated by the probe field incident into this multilevel SQD medium layer, can be coherently tunable through the switchable quantum interference (destructive and constructive quantum interference) among the energy levels in the SQD systems. Such switchable quantum interference can be realized if we tune the intensities (i.e., adjust a proper intensity ratio) of the two control fields that drive the SQD multilevel EIT system. New switchable photonic devices, which could find applications in photonic microcircuits as well as some areas in integrated optical circuits, could be designed based on this quantum-interference switchable surface plasmon resonance.
Place, publisher, year, edition, pages
2014. Vol. 45, 89-98 p.
Prisms, Probes, Quantum interference devices, Quantum optics, Quantum theory, Semiconductor quantum dots, Electromagnetically induced transparency, Integrated optical circuit, Multi-level systems, Quantum coherent effects, Quantum interference, Reflection spectra, Surface plasmon waves, Transition pathway
Electrical Engineering, Electronic Engineering, Information Engineering
IdentifiersURN: urn:nbn:se:kth:diva-161783ScopusID: 2-s2.0-84898413263OAI: oai:DiVA.org:kth-161783DiVA: diva2:795645
QC 201503172015-03-172015-03-172015-03-17Bibliographically approved