TY - JOUR
T1 - Spatiospectral separation of exceptional points in PT-symmetric optical potentials
AU - Yu, Sunkyu
AU - Piao, Xianji
AU - Mason, Daniel R.
AU - In, Sungjun
AU - Park, Namkyoo
PY - 2012/9/11
Y1 - 2012/9/11
N2 - Non-Hermitian Hamiltonians satisfying parity-time (PT) symmetry reveal unusual physical phenomena related to exceptional points, where the onset of PT symmetry breaking occurs. Here, by permitting dispersive variations in the PT-symmetric potential along the propagation axis of a wave, we show that it is possible to obtain PT-induced exceptional points of spatiospectral separation. As an example, we demonstrate "rainbow nonreciprocity" using a PT-symmetric chirped optical potential.
AB - Non-Hermitian Hamiltonians satisfying parity-time (PT) symmetry reveal unusual physical phenomena related to exceptional points, where the onset of PT symmetry breaking occurs. Here, by permitting dispersive variations in the PT-symmetric potential along the propagation axis of a wave, we show that it is possible to obtain PT-induced exceptional points of spatiospectral separation. As an example, we demonstrate "rainbow nonreciprocity" using a PT-symmetric chirped optical potential.
UR - http://www.scopus.com/inward/record.url?scp=84866357327&partnerID=8YFLogxK
U2 - 10.1103/PhysRevA.86.031802
DO - 10.1103/PhysRevA.86.031802
M3 - Article
AN - SCOPUS:84866357327
SN - 1050-2947
VL - 86
JO - Physical Review A - Atomic, Molecular, and Optical Physics
JF - Physical Review A - Atomic, Molecular, and Optical Physics
IS - 3
M1 - 031802
ER -