Direction-Dependent Parity-Time Phase Transition and Non-Reciprocal Directional Amplification with Dynamic Gain-Loss Modulation

Abstract

We show that a dynamic gain-loss modulation in an optical structure can lead to a direction-dependent parity-time (PT) phase transition. The phase transition can be made thresholdless in the forward direction, and yet remains with a non-zero threshold in the backward direction. As a result, non-reciprocal directional amplification can be realized.

arXiv comment13 pages, 4 figures

References in corpus (25)

• Real Spectra in Non-Hermitian Hamiltonians Having PT Symmetry
• Nonreciprocal light transmission in parity-time-symmetric whispering-gallery microcavities
• Unidirectional Invisibility induced by PT-Symmetric Periodic Structures
• PT-symmetry breaking and laser-absorber modes in optical scattering systems
• Edge Modes, Degeneracies, and Topological Numbers in Non-Hermitian Systems
• Probing topological invariants in the bulk of a non-Hermitian optical system
• Unidirectional Nonlinear PT-symmetric Optical Structures
• Experimental realization of optomechanically induced non-reciprocity
• Generalized nonreciprocity in an optomechanical circuit via synthetic magnetism and reservoir engineering
• Nonreciprocal Photon Transmission and Amplification via Reservoir Engineering
• Edge states and topological phases in non-Hermitian systems
• Nonreciprocity and magnetic-free isolation based on optomechanical interactions
• An optical diode made from a `flying' photonic crystal
• Topologically protected defect states in open photonic systems with non-hermitian charge-conjugation and parity-time symmetry
• PT symmetry and spontaneous symmetry breaking in a microwave billiard
• Quantum-limited directional amplifiers with optomechanics
• Non-Reciprocal gain in non-Hermitian time-Floquet Systems
• Effects of non-Hermitian perturbations on Weyl Hamiltonians with arbitrary topological charges
• Pseudo Parity-Time Symmetry in Optical Systems
• Exceptional contours and band structure design in parity-time symmetric photonic crystals
• Experimental realization of Floquet PT-symmetric systems
• Directional amplification with a Josephson circuit
• PT spectroscopy of the Rabi problem
• PT Symmetry Breaking and Nonlinear Optical Isolation in Coupled Microcavities
• Minimal models for nonreciprocal amplification using biharmonic drives

Cited by in corpus (13)

• Nonreciprocal unconventional photon blockade in a spinning optomechanical system
• Tutorial on Electromagnetic Nonreciprocity and Its Origins
• Asymmetric frequency conversion with acoustic non-Hermitian space-time varying metamaterial
• Nonreciprocal metamaterial obeying time-reversal symmetry
• $\hslash \omega$ versus $\hslash \mathbf{k}$: Dispersion and Energy Constraints on Time-Varying Photonic Materials and Time Crystals
• Integrated Nonreciprocal Photonic Devices with Dynamic Modulation
• Transfer matrix method for the analysis of space-time modulated media and systems
• Realization of the unidirectional amplification in a cavity magnonic system
• Floquet control of global $PT$ symmetry in 2D arrays of quadrimer waveguides
• Complex Spatiotemporal Modulations and Non-Hermitian Degeneracies in $\mathcal{P}\mathcal{T}$-Symmetric Phononic Materials
• Broadband optical switch based on an achromatic photonic gauge potential in dynamically modulated waveguides
• Parity-Time Symmetry and Exceptional points: A Tutorial
• Unidirectional weak visibility in band gap and singular scattering in conduction band of one-dimensional parity-time symmetric photonic crystal