Unidirectional zero reflection as gauged parity-time symmetry
arXiv:1707.09413 · doi:10.1088/1367-2630/aa9b56
Abstract
We introduce here the concept of establishing Parity-time symmetry through a gauge transformation involving a shift of the mirror plane for the Parity operation. The corresponding unitary transformation on the system's constitutive matrix allows us to generate and explore a family of equivalent Parity-time symmetric systems. We further derive that unidirectional zero reflection can always be associated with a gauged PT-symmetry and demonstrate this experimentally using a microstrip transmission-line with magnetoelectric coupling. This study allows us to use bianisotropy as a simple route to realize and explore exceptional point behaviour of PT-symmetric or generally non-Hermitian systems.
arXiv comment13 pages total, 5 figures, 1 appendix
References in corpus (21)
- Real Spectra in Non-Hermitian Hamiltonians Having PT Symmetry
- Nonreciprocal light transmission in parity-time-symmetric whispering-gallery microcavities
- Spin-orbit interactions of light
- Unidirectional Invisibility induced by PT-Symmetric Periodic Structures
- Coherent Perfect Absorbers: Time-reversed Lasers
- Loss-induced suppression and revival of lasing
- PT-symmetry breaking and laser-absorber modes in optical scattering systems
- PT-symmetric laser-absorber
- PT-Symmetric Phonon Laser
- Electric coupling to the magnetic resonance of split ring resonators
- PT Metamaterials via Complex-Coordinate Transformation Optics
- Magnetoelectric Effects in Local Light-Matter Interactions
- Gain-Driven Discrete Breathers in PT-Symmetric Nonlinear Metamaterials
- Constant-intensity waves and their modulation instability in non-Hermitian potentials
- Breaking of PT-symmetry in bounded and unbounded scattering systems
- Wave propagation through disordered media without backscattering and intensity variations
- Bianisotropic route to the realization and matching of backward-wave metamaterial slabs
- Parity-time symmetry from stacking purely dielectric and magnetic slabs
- Low-dimensional optical chirality in complex potentials
- Omega Transmission Lines with Applications to Effective Medium Models of Metamaterials
- Disorder-induced dephasing in backscattering-free quantum transport
Cited by in corpus (8)
- Simultaneous Observation of Topological Edge State and Exceptional Point in an Open and Non-Hermitian System
- Extremely asymmetrical acoustic metasurface mirror at the exceptional point
- Willis metamaterial on a structured beam
- Theory of reflectionless scattering modes
- Unidirectional zero sonic reflection in passive symmetric Willis media
- Symmetry-Protected Scattering in Non-Hermitian Linear Systems
- One-sided destructive quantum interference from an exceptional point-enabled metasurface
- Imaginary spin-orbital coupling in parity-time symmetric systems with momentum-dependent gain and loss