Typed states for the displayed outbound observations.
Source: paper_references, paper_reference_links, observed 2026-08-14T12:55:58.661029Z
Paper Citation Record · LEDGER
As of 21 August 2026, this Paper Citation Record lists 65 of 65 outbound references and 0 inbound Pith citation observations for arXiv:1908.06304.
A citation records a reference. It does not transfer a finding from one paper to another.
Typed states for the displayed outbound observations.
Source: paper_references, paper_reference_links, observed 2026-08-14T12:55:58.661029Z
One-hop event checks from named stored sources.
Source: scholarly_work_events, retraction_status_cache, observed 2026-08-21T06:32:19.484+00:00
Pith citing papers itemized under the disclosed page cap.
Source: paper_references, paper_reference_links
A source-named dated measurement, never combined with another source.
Source: cited_works
65 of 65 outbound references displayed
External citation measurements
No source-named external measurement is stored.
Observation 4513180a-76aa-444c-b7d7-2d37cb2c3a6b · outbound
Enhanced stability, bistability, and exceptional points in saturable active photonic couplers The Nonlinear Coherent Coupler,
Reference 1
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation ca861c18-6239-4b45-a9a2-913ef661793b · outbound
Enhanced stability, bistability, and exceptional points in saturable active photonic couplers attractive
Reference 2
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation 65c78872-3b91-482d-9dca-4eacce7618b9 · outbound
Enhanced stability, bistability, and exceptional points in saturable active photonic couplers Unresolved cited work
Reference 3
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation 1988437a-1a55-4246-8396-5735b481aad3 · outbound
Enhanced stability, bistability, and exceptional points in saturable active photonic couplers Stability analysis of nonlinear coherent coupling,
Reference 4
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation 46ef360e-3e69-49e9-a6eb-f8a0137837ff · outbound
Enhanced stability, bistability, and exceptional points in saturable active photonic couplers Nonre- ciprocal Light Propagation in a Silicon Photonic Circuit,
Reference 5
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation 5d9f863b-aa9e-4435-97fa-7289a2a40c23 · outbound
Enhanced stability, bistability, and exceptional points in saturable active photonic couplers Experimental demonstration of a unidirectional reflectionless parity-time metamaterial at optical frequencies,
Reference 6
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation 96f1e18c-467a-4570-bef4-c866d3993950 · outbound
Enhanced stability, bistability, and exceptional points in saturable active photonic couplers Limitations of nonlinear optical isolators due to dynamic reciprocity,
Reference 7
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation 3411b557-5a3f-44a1-93c3-5e9ef4b130b5 · outbound
Enhanced stability, bistability, and exceptional points in saturable active photonic couplers What is - and what is not - an optical isolator,
Reference 8
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation 08384a65-d2f4-4f01-a9ef-059601114b6b · outbound
Enhanced stability, bistability, and exceptional points in saturable active photonic couplers Twin Core Nonlinear Couplers with Gain and Loss,
Reference 9
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation aaabd994-c370-43ed-b8a2-b8fc40ef6c54 · outbound
Enhanced stability, bistability, and exceptional points in saturable active photonic couplers Analysis of Optical Directional Couplers That Include Gain or Loss and Their Application to Semiconductor Slab Dielectric Guides,
Reference 10
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation 74b6a1f1-a299-4459-8299-142e6dbde591 · outbound
Enhanced stability, bistability, and exceptional points in saturable active photonic couplers Self-trapping on a dimer: Time-dependent solutions of a discrete nonlinear Schrodinger equation,
Reference 11
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation 9d63db09-1f73-43e2-aa96-d1182f59c380 · outbound
Enhanced stability, bistability, and exceptional points in saturable active photonic couplers Polarization dynamics in twisted fiber amplifiers: a non-Hermitian nonlinear dimer model,
Reference 12
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation 41af7034-3eb1-4c50-ac75-c78d7eefe403 · outbound
Enhanced stability, bistability, and exceptional points in saturable active photonic couplers The dawn of non- Hermitian optics,
Reference 13
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation d34056fe-f2b8-4400-8f9e-ff7e40552d22 · outbound
Enhanced stability, bistability, and exceptional points in saturable active photonic couplers Non-Hermitian evolution of two-level quantum systems,
Reference 14
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation c74ea9bf-cff4-4d9d-b605-e6a0a5426885 · outbound
Enhanced stability, bistability, and exceptional points in saturable active photonic couplers Parity-Time Symmetric Nonlocal Metasurfaces: All-Angle Negative Refraction and V olumetric Imaging,
Reference 15
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation 09d2fabf-1ff8-40e1-bcca-9fd27e95c95b · outbound
Enhanced stability, bistability, and exceptional points in saturable active photonic couplers Non-Hermitian nanophotonic and plasmonic waveguides,
Reference 16
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation 2881a371-eaa7-4804-b318-4abe4afcba74 · outbound
Enhanced stability, bistability, and exceptional points in saturable active photonic couplers Switching using PT symmetry in plasmonic systems: positive role of the losses,
Reference 17
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation 9bc5daa8-5fd5-4372-b9a8-5c4746f030e0 · outbound
Enhanced stability, bistability, and exceptional points in saturable active photonic couplers Optical PT-Symmetric Counterparts of Ordinary Metals,
Reference 18
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation 937db44c-b5b4-419b-869d-4f6cc4e68a7f · outbound
Enhanced stability, bistability, and exceptional points in saturable active photonic couplers Single-mode laser by parity-time symmetry breaking,
Reference 19
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation c2f49c39-7d6b-4bb1-ada6-f8b31805cf62 · outbound
Enhanced stability, bistability, and exceptional points in saturable active photonic couplers An invisible acoustic sensor based on parity-time symmetry,
Reference 20
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation 31a2889f-26de-419c-ac73-3c56e4c93f75 · outbound
Enhanced stability, bistability, and exceptional points in saturable active photonic couplers PT-symmetric laser absorber,
Reference 21
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation 6bbc3571-015b-47ca-a790-6da57f4a7a0d · outbound
Enhanced stability, bistability, and exceptional points in saturable active photonic couplers Parity-time- symmetric microring lasers,
Reference 22
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation 2021ba93-c986-4aba-bb5a-783b94c82bb4 · outbound
Enhanced stability, bistability, and exceptional points in saturable active photonic couplers Parity–time-symmetric whispering-gallery microcavities,
Reference 23
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation 45131618-b570-4fff-906a-a9cfd15730c4 · outbound
Enhanced stability, bistability, and exceptional points in saturable active photonic couplers Non-Hermitian photonics based on parity–time symmetry,
Reference 24
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation 3fa02f67-07a3-4b4d-b50a-b144393d8c11 · outbound
Enhanced stability, bistability, and exceptional points in saturable active photonic couplers Unidirectional nonlinear PT- symmetric optical structures,
Reference 25
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation 73491390-6aba-4210-96b0-6021e48ee291 · outbound
Enhanced stability, bistability, and exceptional points in saturable active photonic couplers Nonlinear switching and solitons in PT-symmetric photonic systems,
Reference 26
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation 82224599-8b8d-438b-bf31-9ec0a5b557df · outbound
Enhanced stability, bistability, and exceptional points in saturable active photonic couplers Blow-up regimes in the PT-symmetric coupler and the actively coupled dimer,
Reference 27
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation 3d2cb48b-69e0-4e45-8208-4b2f2a9f7b27 · outbound
Enhanced stability, bistability, and exceptional points in saturable active photonic couplers Nonlinear waves in PT-symmetric systems,
Reference 28
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation 16e2a506-0c49-4bdd-b906-995a12eb0cf1 · outbound
Enhanced stability, bistability, and exceptional points in saturable active photonic couplers Stability through asymmetry: Modulationally stable nonlinear supermodes of asymmetric non-Hermitian optical couplers,
Reference 29
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation b4568e87-cecc-4421-9b28-6fcc61c171f4 · outbound
Enhanced stability, bistability, and exceptional points in saturable active photonic couplers Integrable non- linear parity-time-symmetric optical oscillator,
Reference 30
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation 79716f24-e2c4-488a-81cd-94c644be521d · outbound
Enhanced stability, bistability, and exceptional points in saturable active photonic couplers Controllable Asymmetric Phase-Locked States of the Funda- mental Active Photonic Dimer,
Reference 31
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation 34d1b211-0e74-4750-9772-877b0a9e6ff5 · outbound
Enhanced stability, bistability, and exceptional points in saturable active photonic couplers The Asymmetric Active Coupler: Stable Nonlinear Supermodes and Directed Transport,
Reference 32
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation f288df7d-1913-4173-9ee6-8d12be755889 · outbound
Enhanced stability, bistability, and exceptional points in saturable active photonic couplers Topological Control of Synchronization Patterns: Trading Symmetry for Stability,
Reference 33
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation c2241281-c390-4c14-a38a-ca27ccc3aeff · outbound
Enhanced stability, bistability, and exceptional points in saturable active photonic couplers Parity-time symmetry in coherently coupled vertical cavity laser arrays,
Reference 34
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation beefec50-d9ed-41ca-ab0e-75795c42d823 · outbound
Enhanced stability, bistability, and exceptional points in saturable active photonic couplers Soliton dynamics in symmetric and non-symmetric complex potentials,
Reference 35
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation 9472f6c9-9d2d-4589-a597-54a8c1139d82 · outbound
Enhanced stability, bistability, and exceptional points in saturable active photonic couplers Continuous families of solitary waves in non-symmetric complex potentials: A Melnikov theory approach,
Reference 36
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation 01239f65-affb-4a4a-9bbe-995b61cc594c · outbound
Enhanced stability, bistability, and exceptional points in saturable active photonic couplers The effect of nonlinear gain on the stability of evanescently coupled semiconductor laser arrays,
Reference 37
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation a04e7e0e-85d7-4fa3-a03d-7103cf88c0a8 · outbound
Enhanced stability, bistability, and exceptional points in saturable active photonic couplers staggering
Reference 38
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation f832dbdb-1efe-44a0-9744-9ae30b34eaa8 · outbound
Enhanced stability, bistability, and exceptional points in saturable active photonic couplers Dynamic power balance for nonlinear waves in unbalanced gain and loss landscapes,
Reference 39
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation 57c8c9f4-8943-48d3-b9eb-e41c6ee6463a · outbound
Enhanced stability, bistability, and exceptional points in saturable active photonic couplers Optical Cavity Effects in ZnO Nanowire Lasers and Waveguides,
Reference 40
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation 595873b3-78ae-4174-b44b-9d2e0761d174 · outbound
Enhanced stability, bistability, and exceptional points in saturable active photonic couplers Ultra-fast photonic crystal/quantum dot all-optical switch for future photonic networks,
Reference 41
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation d8f7d4c1-895b-4081-beac-bec8e287c5d9 · outbound
Enhanced stability, bistability, and exceptional points in saturable active photonic couplers Optical Bistability in a Nonlinear Directional Coupler,
Reference 42
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation 06ec349d-a4c6-4022-b73b-5576caee2882 · outbound
Enhanced stability, bistability, and exceptional points in saturable active photonic couplers Optical bistability with film- coupled metasurfaces,
Reference 43
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation c5187f0a-a4bb-4160-80f9-6800c29ae0df · outbound
Enhanced stability, bistability, and exceptional points in saturable active photonic couplers Bistability in two simple symmetrically coupled oscillators with symmetry-broken amplitude- and phase-locking,
Reference 44
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation ab6ff425-8feb-4ff8-8f9c-5d497ce40e8e · outbound
Enhanced stability, bistability, and exceptional points in saturable active photonic couplers Unresolved cited work
Reference 45
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation 3902ab84-c254-4248-8fe6-48139e5b4f65 · outbound
Enhanced stability, bistability, and exceptional points in saturable active photonic couplers Periodic orbits, basins of attraction and chaotic beats in two coupled Kerr oscillators,
Reference 46
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation 1deae2f4-99fa-4876-b23c-8650bc7f4923 · outbound
Enhanced stability, bistability, and exceptional points in saturable active photonic couplers Basins of Attraction of a Nonlinear Nanomechanical Resonator,
Reference 47
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation c7ed827b-0b78-406a-a2ee-21aaf501eef4 · outbound
Enhanced stability, bistability, and exceptional points in saturable active photonic couplers The physics of exceptional points,
Reference 48
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation 5bbb2e3b-ef42-45f5-843a-df89d87f6888 · outbound
Enhanced stability, bistability, and exceptional points in saturable active photonic couplers Enhanced sensitivity at higher-order exceptional points,
Reference 49
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation 669274a6-9511-420d-8459-8c12689bf409 · outbound
Enhanced stability, bistability, and exceptional points in saturable active photonic couplers Dynamics for encircling an exceptional point in a nonlinear non-Hermitian system,
Reference 50
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation 1851132a-7098-43b9-b61c-e50bc2f4c456 · outbound
Enhanced stability, bistability, and exceptional points in saturable active photonic couplers Coupled-mode theory for optical waveguides: an overview,
Reference 51
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation 675bc47a-37f9-4e58-a00f-20194ef5f024 · outbound
Enhanced stability, bistability, and exceptional points in saturable active photonic couplers Bistable metamaterial for switching and cascading elastic vibrations,
Reference 52
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation 35d9bf64-898c-4349-abcc-b157909b6dc7 · outbound
Enhanced stability, bistability, and exceptional points in saturable active photonic couplers Radiative Bistability and Thermal Memory,
Reference 53
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation 9b33e348-28fa-48e3-b582-8257a620edbb · outbound
Enhanced stability, bistability, and exceptional points in saturable active photonic couplers In-memory computing on a photonic platform,
Reference 54
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation 8cde5262-2db6-469f-bfd4-4a779a68f56a · outbound
Enhanced stability, bistability, and exceptional points in saturable active photonic couplers Atom–light interactions in photonic crystals,
Reference 55
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation 3d0d0008-d9a2-4f90-84a3-c04acf79dd84 · outbound
Enhanced stability, bistability, and exceptional points in saturable active photonic couplers Complicated basins in external-cavity semicon- ductor lasers,
Reference 56
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation 2e471f8e-4114-421b-b5de-3e4e0f97926e · outbound
Enhanced stability, bistability, and exceptional points in saturable active photonic couplers Exceptional points in optics and photonics,
Reference 57
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation ddd1f026-7f0d-47c4-a6b9-bd03603c3acd · outbound
Enhanced stability, bistability, and exceptional points in saturable active photonic couplers Visualization of Branch Points in PT-Symmetric Waveg- uides,
Reference 58
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation dad58ee1-5429-41ec-bdba-b98808a79115 · outbound
Enhanced stability, bistability, and exceptional points in saturable active photonic couplers Exceptional points enhance sensing in an optical microcavity,
Reference 59
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation de294497-965e-4c08-8bcb-63c6e1e8f264 · outbound
Enhanced stability, bistability, and exceptional points in saturable active photonic couplers Enhanced sensitivity operation of an optical gyroscope near an exceptional point
Reference 60
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation 149ba1e5-1f4a-4f63-94db-61dc51c345c0 · outbound
Enhanced stability, bistability, and exceptional points in saturable active photonic couplers Exceptional points and asymmetric mode conversion in quasi-guided dual-mode optical waveguides,
Reference 61
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation 4b5b8105-94a8-4631-9fbd-ea22066eea6e · outbound
Enhanced stability, bistability, and exceptional points in saturable active photonic couplers Spectral Signatures of Exceptional Points and Bifurcations in the Fundamental Active Photonic Dimer,
Reference 62
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation e878ae18-bbac-497f-a0ed-518f504950f8 · outbound
Enhanced stability, bistability, and exceptional points in saturable active photonic couplers Exceptional Points in Two Dissimilar Coupled Diode Lasers,
Reference 63
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation 0dc5a90f-5b5d-4d86-abda-cefc38e58a66 · outbound
Enhanced stability, bistability, and exceptional points in saturable active photonic couplers Dynamically En- circling Exceptional Points: Exact Evolution and Polarization State Conversion,
Reference 64
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
Observation 00b55cad-1429-442b-848f-57c7c11ada0c · outbound
Enhanced stability, bistability, and exceptional points in saturable active photonic couplers Exceptional points-based optical amplifiers
Reference 65
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-21T06:32:19.484+00:00.
No inbound Pith citation observations are available.