TY - JOUR
T1 - Dual-channel spontaneous emission of quantum dots in magnetic metamaterials
AU - Decker, Manuel
AU - Staude, Isabelle
AU - Shishkin, Ivan I.
AU - Samusev, Kirill B.
AU - Parkinson, Patrick
AU - Sreenivasan, Varun K A
AU - Minovich, Alexander
AU - Miroshnichenko, Andrey E.
AU - Zvyagin, Andrei
AU - Jagadish, Chennupati
AU - Neshev, Dragomir N.
AU - Kivshar, Yuri S.
PY - 2013/12/12
Y1 - 2013/12/12
N2 - Metamaterials, artificial electromagnetic media realized by subwavelength nano-structuring, have become a paradigm for engineering electromagnetic space, allowing for independent control of both electric and magnetic responses of the material. Whereas most metamaterials studied so far are limited to passive structures, the need for active metamaterials is rapidly growing. However, the fundamental question on how the energy of emitters is distributed between both (electric and magnetic) interaction channels of the metamaterial still remains open. Here we study simultaneous spontaneous emission of quantum dots into both of these channels and define the control parameters for tailoring the quantum-dot coupling to metamaterials. By superimposing two orthogonal modes of equal strength at the wavelength of quantum-dot photoluminescence, we demonstrate a sharp difference in their interaction with the magnetic and electric metamaterial modes. Our observations reveal the importance of mode engineering for spontaneous emission control in metamaterials, paving a way towards loss-compensated metamaterials and metamaterial nanolasers.
AB - Metamaterials, artificial electromagnetic media realized by subwavelength nano-structuring, have become a paradigm for engineering electromagnetic space, allowing for independent control of both electric and magnetic responses of the material. Whereas most metamaterials studied so far are limited to passive structures, the need for active metamaterials is rapidly growing. However, the fundamental question on how the energy of emitters is distributed between both (electric and magnetic) interaction channels of the metamaterial still remains open. Here we study simultaneous spontaneous emission of quantum dots into both of these channels and define the control parameters for tailoring the quantum-dot coupling to metamaterials. By superimposing two orthogonal modes of equal strength at the wavelength of quantum-dot photoluminescence, we demonstrate a sharp difference in their interaction with the magnetic and electric metamaterial modes. Our observations reveal the importance of mode engineering for spontaneous emission control in metamaterials, paving a way towards loss-compensated metamaterials and metamaterial nanolasers.
UR - http://www.scopus.com/inward/record.url?scp=84890727075&partnerID=8YFLogxK
U2 - 10.1038/ncomms3949
DO - 10.1038/ncomms3949
M3 - Article
C2 - 24335832
AN - SCOPUS:84890727075
SN - 2041-1723
VL - 4
SP - 1
EP - 10
JO - Nature Communications
JF - Nature Communications
M1 - 2949
ER -