Anti-Parity-Time Symmetric Optics via Flying Atoms

Abstract

The recently-developed notion of 'parity-time (PT) symmetry' in optical systems with a controlled gain-loss interplay has spawned an intriguing way of achieving optical behaviors that are presently unattainable with standard arrangements. In most experimental studies so far, however, the implementations rely highly on the advances of nanotechnologies and sophisticated fabrication techniques to synthesize solid-state materials. Here, we report the first experimental demonstration of optical anti-PT symmetry, a counterpart of conventional PT symmetry, in a warm atomic-vapor cell. By exploiting rapid coherence transport via flying atoms, our scheme illustrates essential features of anti-PT symmetry with an unprecedented precision on phase-transition threshold, and substantially reduces experimental complexity and cost. This result represents a significant advance in non-Hermitian optics by bridging a firm connection with the field of atomic, molecular and optical physics, where novel phenomena and applications in quantum and nonlinear optics aided by (anti-)PT symmetry could be anticipated.

References in corpus (9)

• Making Sense of Non-Hermitian Hamiltonians
• PT-symmetry breaking and laser-absorber modes in optical scattering systems
• Spawning rings of exceptional points out of Dirac cones
• $\mathcal{P}\mathcal{T}$-Symmetry-Breaking Chaos in Optomechanics
• A review of progress in the physics of open quantum systems: theory and experiment
• Invisibility and PT-symmetry
• PT-symmetric quantum mechanics
• Electromagnetically induced Talbot effect
• Coherence assisted resonance with sub-lifetime-limited linewidth

Cited by in corpus (166)

• Topological phases of non-Hermitian systems
• Symmetry and Topology in Non-Hermitian Physics
• Topological phase transition in non-Hermitian quasicrystals
• Observation of parity-time symmetry breaking in a single spin system
• Periodic Table for Topological Bands with Non-Hermitian Bernard-LeClair Symmetries
• Observation of coherent perfect absorption at an exceptional point
• Parity-time-symmetric quantum critical phenomena
• Topological unification of time-reversal and particle-hole symmetries in non-Hermitian physics
• Dynamically encircling an exceptional point in anti-PT-symmetric systems: asymmetric mode switching for symmetry-broken states
• Topological exceptional surfaces in non-Hermitian systems with parity-time and parity-particle-hole symmetries
• Entanglement Phase Transition Induced by the Non-Hermitian Skin Effect
• Unconventional Singularity in Anti-Parity-Time Symmetric Cavity Magnonics
• Anomalous helical edge states in a non-Hermitian Chern insulator
• Parity-time-symmetric topological superconductor
• Synthetic parity-time symmetry breaking in a single microcavity
• Breaking Anti-$\mathcal{P}\mathcal{T}$ Symmetry by Spinning a Resonator
• Anti-Parity-Time Symmetric Optical Four-Wave Mixing in Cold Atoms
• Exceptional Points in Random-Defect Phonon Lasers
• Nonunitary Scaling Theory of Non-Hermitian Localization
• Observation of anti-PT symmetry phase transition in the magnon-cavity-magnon coupled system
• $\mathcal{P}\mathcal{T}$-symmetric circuit-QED
• Parity-Time Symmetry in Non-Hermitian Complex Optical Media
• Observation of anti-parity-time-symmetry, phase transitions and exceptional points in an optical fibre
• Full-Counting Many-Particle Dynamics: Nonlocal and Chiral Propagation of Correlations
• Symmetry-protected zero-mode laser with a tunable spatial profile
• Boundary-dependent Self-dualities, Winding Numbers and Asymmetrical Localization in non-Hermitian Quasicrystals
• Quantum squeezing and sensing with pseudo anti-parity-time symmetry
• Observation of Exceptional Points in Thermal Atomic Ensembles
• Odd-time reversal $PT$ symmetry induced by anti-$PT$-symmetric medium
• Non-Hermitian Floquet topological superconductors with multiple Majorana edge modes
• Liouvillian exceptional points of any order in dissipative linear bosonic systems: Coherence functions and switching between $\mathcal{P}\mathcal{T}$ and anti-$\mathcal{P}\mathcal{T}$ symmetries
• Parity-time symmetry in optical microcavity systems
• Quantum correlations near the exceptional point
• Sideband cooling of nearly degenerate micromechanical oscillators in a multimode optomechanical system
• Dynamical characterization of non-Hermitian Floquet topological phases in one-dimension
• Non-reciprocity and quantum correlations of light transport in hot atoms via reservoir engineering
• Experimental Demonstration of Controllable PT and anti-PT Coupling in a non-Hermitian Metamaterial
• Experimental observation of information flow in the anti-$\mathcal{P}\mathcal{T}$-symmetric system
• Anderson localization and topological phase transitions in non-Hermitian Aubry-André-Harper models with p-wave pairing
• Emergent entanglement phase transitions in non-Hermitian Aubry-André-Harper chains
• Hot atomic vapors for nonlinear and quantum optics
• Exceptional entanglement phenomena: non-Hermiticity meeting non-classicality
• Symmetry-Protected Scattering in Non-Hermitian Linear Systems
• Environmentally-induced exceptional points in elastodynamics
• Scattering by finite periodic $\mathcal{P}\mathcal{T}$-symmetric structures
• Symmetry and topological classification of Floquet non-Hermitian systems
• Generating high-order quantum exceptional points in synthetic dimensions
• Anyonic-parity-time symmetry in complex-coupled lasers
• Ring Structure in the Complex Plane: A Fingerprint of non-Hermitian Mobility Edge
• Nonreciprocal slow or fast light in anti-$\mathcal{P}\mathcal{T}$-symmetric optomechanics
• Non-Hermitian phase transition and eigenstate localization induced by asymmetric coupling
• Generation of long-lived $W$ states via reservoir engineering in dissipatively coupled systems
• Localization, quantum resonances and ratchet acceleration in a periodically-kicked $\mathcal{P}\mathcal{T}$-symmetric quantum rotator
• Experimental simulation of the Parity-Time-symmetric dynamics using photonics qubits
• Experimental demonstration of coherence flow in $\mathcal{P}\mathcal{T}$- and anti-$\mathcal{P}\mathcal{T}$-symmetric systems
• Anti-$\mathcal{P}\mathcal{T}$-symmetric Kerr gyroscope
• On-chip mechanical exceptional points based on an optomechanical zipper cavity
• Symmetry-protected exceptional and nodal points in non-Hermitian systems
• Non-Hermitian Waveguide Cavity QED with Tunable Atomic Mirrors
• Bound states and photon emission in non-Hermitian nanophotonics
• $\mathcal{P}\mathcal{T}$ symmetry and anti-symmetry by anti-Hermitian wave coupling and nonlinear optical interactions
• Hyperparametric oscillation via bound states in the continuum
• Activating non-Hermitian skin modes by parity-time symmetry breaking
• Non-Hermitian magnon-photon interference in an atomic ensemble
• Nonlinear Topological Edge States in a non-Hermitian Array of Optical Waveguides Embedded in an Atomic Gas
• Information retrieval and eigenstates coalescence in a non-Hermitian quantum system with anti-$\mathcal{P}\mathcal{T}$ symmetry
• Pseudo-chirality: a manifestation of Noether's theorem in non-Hermitian systems
• Two-qubit entanglement generation through non-Hermitian Hamiltonians induced by repeated measurements on an ancilla
• Experimental Liouvillian exceptional points in a quantum system without Hamiltonian singularities
• Tuning of the Hanle effect from EIT to EIA using spatially separated probe and control beams
• Shortcuts to adiabaticity with general two-level non-Hermitian systems
• Entanglement Dynamics in Anti-$\mathcal{P}\mathcal{T}$-Symmetric Systems
• Pseudo-Hermiticity protects the energy-difference conservation in the scattering
• Statics and Dynamics of non-Hermitian Many-Body Localization
• Energy-level-attraction and heating-resistant-cooling of mechanical resonators with exceptional points
• Asymmetric transfer matrix analysis of Lyapunov exponents in one-dimensional non-reciprocal quasicrystals
• Realizing exceptional points by Floquet dissipative couplings in thermal atoms
• Chiral state transfer under dephasing
• Fractional Quantum Zeno Effect Emerging from Non-Hermitian Physics
• Quantum Fisher Information Perspective on Sensing in Anti-PT Symmetric Systems
• Anti-PT-symmetry-enhanced interconversion between microwave and optical fields
• Photonic quantum simulations of coupled $PT$-symmetric Hamiltonians
• Anti-parity-time symmetry hidden in a damping linear resonator
• Measuring Zak phase in room-temperature atoms
• Scattering properties of anti-parity-time symmetric non-Hermitian system
• Coupling-induced nonunitary and unitary scattering in anti-PT-symmetric non-Hermitian systems
• Conserved quantities, exceptional points, and antilinear symmetries in non-Hermitian systems
• Spatial multiplexing of squeezed light by coherence diffusion
• Experimental Observation of Partial Parity-Time Symmetry and Its Phase Transition with a Laser-Driven Cesium Atomic Gas
• Quantum simulation of a general anti-PT-symmetric Hamiltonian with a trapped ion qubit
• Topological atomic spinwave lattices by dissipative couplings
• Measuring topological invariants for higher-order exceptional points in quantum three-mode systems
• Pseudo-Hermitian Hamiltonians Generating Waveguide Mode Evolution
• Exceptional point induced lasing dynamics in a non-Hermitian system
• Scattering of an alkali atomic beam on anti-spin-relaxation-coatings
• Fundamental transfer matrix for electromagnetic waves, scattering by a planar collection of point scatterers, and anti-PT-symmetry
• Detecting topological exceptional points in a parity-time symmetric system with cold atoms
• Searching for exceptional points and inspecting non-contractivity of trace distance in (anti-)$\mathcal{P}\mathcal{T}-$symmetric systems
• Wide-range-tunable Dirac-cone band structure in a chiral-time-symmetric non-Hermitian system
• Connecting active and passive $\mathcal{P}\mathcal{T}$-symmetric Floquet modulation models
• Physics of PT-Symmetric Quantum Systems at Finite Temperature
• Imaginary gap-closed points and dynamics in a class of dissipative systems
• Enhancing the sensitivity of nonlinearity sensors through homodyne detection in dissipatively coupled systems
• Entanglement Emerges from Dissipation-Structured Quantum Self-Organization
• Eigenstates Transition Without Undergoing an Adiabatic Process
• Oscillation death in coupled counter-rotating identical nonlinear oscillators
• Single-mode magnon-polariton lasing and amplification controlled by dissipative coupling
• Effective non-Hermitian physics for degenerate ground states of a nonHermitian Ising model with $\mathcal{R}\mathcal{T}$ symmetry
• Liouvillian and Hamiltonian exceptional points of atomic vapors: The spectral signatures of quantum jumps
• Enhancement of synthetic magnetic field induced nonreciprocity via bound states in continuum in dissipatively coupled systems
• Quantum Metrology with Higher-order Exceptional Points in Atom-cavity Magnonics
• Rapidly-oscillating scatteringless non-Hermitian potentials and the absence of Kapitza stabilization
• Analysis of Dirac exceptional points and their isospectral Hermitian counterparts
• Tunable Aharonov-Bohm cages through anti-$\mathcal{P}\mathcal{T}$-symmetric imaginary couplings
• Non-Markovian anti-parity-time symmetric systems: theory and experiment
• Waveguide QED with dissipative light-matter couplings
• Anyonic $\mathcal{P}\mathcal{T}$ symmetry, drifting potentials and non-Hermitian delocalization
• Non-Hermiticity in quantum nonlinear optics through symplectic transformations
• Enhanced sensing of optomechanically induced nonlinearity by linewidth suppression and optical bistability in cavity-waveguide systems
• Diamond Configuration for Non-reciprocal Transmission
• Dynamical evolution of an effective two-level system with PT symmetry
• $\mathcal{P}\mathcal{T}$-symmetric quantum Rabi model: Solutions and exceptional points
• Chiral states in coupled-lasers lattice by on-site complex potential
• Parity-Time Symmetry and Exceptional points: A Tutorial
• Single-Cavity Bi-Color Laser Enabled by Optical Anti-Parity-Time Symmetry
• Nonadiabatic transitions in non-Hermitian $\mathcal{P}\mathcal{T}$-symmetric two-level systems
• The Effect of non-Hermiticity on Adiabatic Elimination
• Symmetry-driven Phononic Metamaterials
• Universal scaling at a pre-thermal dark state
• Manipulating Spectral Windings and Skin Modes through Nonconservative Couplings
• Topological eigenvalues braiding and quantum state transfer near a third-order exceptional point
• Lopsided optical diffraction in loop electromagnetically induced grating
• Imaginary spin-orbital coupling in parity-time symmetric systems with momentum-dependent gain and loss
• How do CPT-like symmetries shape the stability of geophysical flows?
• On-chip optical isolator and nonreciprocal parity-time symmetry induced by stimulated Brillouin scattering
• Scattering of Spin-$\frac{1}{2}$ Particles from a $\mathcal{P}\mathcal{T}$-symmetric Complex Potential
• Dynamic Control of Coupling Regimes in Oscillator Systems via Tunable Open Channels
• Collectively induced transparency and absorption in waveguide QED with Bragg atom arrays
• Behavior of solitary waves of coupled nonlinear Schrödinger equations subjected to complex external periodic potentials with anti-$\mathcal{P}\mathcal{T}$ symmetry
• Local preservation of no-signaling in multiparty PT-symmetric evolutions
• Conserved quantities in non-Hermitian systems via vectorization method
• Controlling quasi-parametric amplifications: From multiple PT-symmetry phase transitions to non-Hermitian sensing
• Stability of time-periodic $\mathcal{P}\mathcal{T}$ and anti-$\mathcal{P}\mathcal{T}$-symmetric Hamiltonians with different periodicities
• Non-adiabatic transitions in parabolic and super-parabolic $\mathcal{P}\mathcal{T}$-symmetric non-Hermitian systems
• Witnessing criticality in non-Hermitian systems via entropic uncertainty relation
• Manipulating spectral transitions and photonic transmission in a non-Hermitian optical system through nanoparticle perturbations
• Observation of Perfect Absorption in Hyperfine Levels of Molecular Spins with Hermitian Subspaces
• Exceptional Point Superradiant Lasing with Ultranarrow Linewidth
• $\mathcal{P}\mathcal{T}$-symmetric two-photon quantum Rabi models
• Talbot effect in nonparaxial self-accelerating beams with electromagnetically induced transparency
• Anti-$\mathcal{P}\mathcal{T}$-symmetric Qubit: Decoherence and Entanglement Entropy
• Dynamical non-Hermitian systems: Fingerprints and pure dephasing induced protection effect
• Non-Hermitian Higher-Order Dirac Semimetals
• Balancing gain and loss in symmetrised multi-well potentials
• $\mathcal{P}\mathcal{T}$-Symmetry Enhanced Berezinskii-Kosterlitz-Thouless Superfluidity
• Rabi oscillations at the exceptional point in anti-parity-time symmetric diffusive systems
• Development of an electrodynamic balance to study single levitated particles exposed to alkali-metal vapor
• The Role of Exceptional Points and Transmission Peak Degeneracies in Non-Hermitian Sensing
• Complex time method for quantum dynamics when an exceptional point is encircled in the parameter space
• Bound states and decay dynamics in $N$-level Friedrichs model with factorizable interactions
• Enhancement of quantum sensing in a dissipatively coupled two-mode system
• High-sensitivity bio-sensor based on the real-splitting indirectly coupled Anti-Parity time symmetric WGMs
• Physical relevance of time-independent scattering calculations in non-Hermitian systems: The role of time-growing bound states
• Anomalous Point-Gap Interactions Unveil the Mirage Bath
• Higher-order exceptional lines in a non-Hermitian JaynesCummings triangle
• Broadband quasi-PT Symmetry Sustained by Inhomogeneous Broadening of the Spectral Line