PT-symmetric optical potentials in a coherent atomic medium

Abstract

We demonstrate that a coherently-prepared four-level atomic medium can provide a versatile platform for realizing parity-time (PT) symmetric optical potentials. Different types of PT-symmetric potentials are proposed by appropriately tuning the exciting optical fields and the pertinent atomic parameters. Such reconfigurable and controllable systems can open up new avenues in observing PT-related phenomena with appreciable gain/loss contrast in coherent atomic media.

References in corpus (5)

• Making Sense of Non-Hermitian Hamiltonians
• PT-symmetry breaking and laser-absorber modes in optical scattering systems
• Visualization of Branch Points in PT-Symmetric Waveguides
• Unidirectional Nonlinear PT-symmetric Optical Structures
• Refractive Index Enhancement with Vanishing Absorption in an Atomic Vapor

Cited by in corpus (21)

• Anti-Parity-Time Symmetric Optics via Flying Atoms
• Observation of Parity-Time Symmetry in Optically Induced Atomic Lattices
• Continuous and discrete Schrodinger systems with PT-symmetric nonlinearities
• Parity-Time Symmetry in Non-Hermitian Complex Optical Media
• Spatial solitons and stability in self-focusing and defocusing Kerr nonlinear media with generalized PT-symmetric Scarff-II potentials
• Photonic Floquet Topological Insulator in an Atomic Ensemble
• Parity-time symmetry in optical microcavity systems
• Parity-time symmetry breaking in magnetic systems
• Parity-time-symmetric optical lattice with alternating gain and loss atomic configurations
• Unidirectional and controllable higher-order diffraction by a Rydberg electromagnetically induced grating
• New classes of solutions in the Coupled PT Symmetric Nonlocal Nonlinear Schrodinger Equations with Four Wave Mixing
• Collisional Dynamics of Solitons in the Coupled PT symmetric Nonlocal nonlinear Schrodinger equations
• Nonlinear Topological Edge States in a non-Hermitian Array of Optical Waveguides Embedded in an Atomic Gas
• Experimental Observation of Partial Parity-Time Symmetry and Its Phase Transition with a Laser-Driven Cesium Atomic Gas
• Shock-induced $\mathcal{P}\mathcal{T}$-symmetric potentials in gas-filled photonic crystal fibers
• Eigenstates Transition Without Undergoing an Adiabatic Process
• Systems that become $\mathcal{P}\mathcal{T}$ symmetric through interaction
• Two-way enhancement of sensitivity by tailoring higher-order exceptional points
• Lopsided optical diffraction in loop electromagnetically induced grating
• Controlling of blow-up responses by a nonlinear $\mathcal{P}\mathcal{T}$ symmetric coupling
• Three-level Λ-type atomic systems with a Pseudo-Hermitian PT-symmetric Hamiltonian