TY - JOUR
T1 - Antisymmetric PT-photonic structures with balanced positive- and negative-index materials
AU - Ge, Li
AU - Türeci, Hakan E.
PY - 2013/11/11
Y1 - 2013/11/11
N2 - We propose a class of synthetic optical materials in which the refractive index satisfies n(-x)=-n*(x). We term such systems antisymmetric parity-time (APT) structures. Unlike PT-symmetric systems, which require balanced gain and loss, i.e., n(-x)=n*(x), APT systems consist of balanced positive- and negative-index materials. Despite the seemingly PT-symmetric optical potential V(x)≡n(x )2ω2/c2, APT systems are not invariant under combined PT operations due to the discontinuity of the spatial derivative of the wave function. We show that APT systems can display intriguing properties, such as spontaneous phase transition of the scattering matrix, a flat total transmission band, and a continuous lasing spectrum.
AB - We propose a class of synthetic optical materials in which the refractive index satisfies n(-x)=-n*(x). We term such systems antisymmetric parity-time (APT) structures. Unlike PT-symmetric systems, which require balanced gain and loss, i.e., n(-x)=n*(x), APT systems consist of balanced positive- and negative-index materials. Despite the seemingly PT-symmetric optical potential V(x)≡n(x )2ω2/c2, APT systems are not invariant under combined PT operations due to the discontinuity of the spatial derivative of the wave function. We show that APT systems can display intriguing properties, such as spontaneous phase transition of the scattering matrix, a flat total transmission band, and a continuous lasing spectrum.
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U2 - 10.1103/PhysRevA.88.053810
DO - 10.1103/PhysRevA.88.053810
M3 - Article
AN - SCOPUS:84888246709
SN - 1050-2947
VL - 88
JO - Physical Review A - Atomic, Molecular, and Optical Physics
JF - Physical Review A - Atomic, Molecular, and Optical Physics
IS - 5
M1 - 053810
ER -