42 concepts.
Search across quantum nanophotonics, from Maxwell equations to entangled photons.
01 · Chapter 1Diffraction and the nanoscaleA propagating far-field wave cannot freely resolve arbitrary subwavelength detail.02 · Chapter 1Maxwell equations in matterNanophotonics starts with electromagnetic boundary-value problems in structured media.03 · Chapter 1Waveguides and effective indexGuided modes propagate with phase constants determined by geometry and materials.04 · Chapter 1Evanescent fields and near-field opticsEvanescent waves carry subwavelength structure but decay away from an interface.05 · Chapter 1Optical mode volumeSmall mode volumes concentrate the electric field per photon.06 · Chapter 1Quality factor and photon lifetimeThe quality factor quantifies stored optical energy relative to energy loss.07 · Chapter 1Dispersion and group velocityWaveguide dispersion controls pulse propagation and light–matter interaction time.08 · Chapter 1Photonic crystals and band gapsPeriodic refractive-index structures reshape allowed electromagnetic modes.09 · Chapter 2Quantization of a cavity modeA single optical mode behaves as a quantum harmonic oscillator.10 · Chapter 2Fock states and coherent statesNumber states and coherent states have different photon statistics.11 · Chapter 2Second-order coherencePhoton correlations reveal bunching, antibunching and nonclassical emission.12 · Chapter 2Two-level quantum emittersA localized quantum emitter can absorb and radiate one excitation at a time.13 · Chapter 2Vacuum fluctuations and spontaneous emissionSpontaneous emission is governed by emitter coupling to available electromagnetic vacuum modes.14 · Chapter 2Jaynes–Cummings interactionA two-level emitter coherently exchanges excitations with one quantized cavity mode.15 · Chapter 2Purcell enhancementA resonant environment changes spontaneous-emission rates.16 · Chapter 2Strong coupling and polaritonsCoherent light–matter exchange can produce hybrid photon–emitter excitations.17 · Chapter 2Input–output theoryOpen quantum optical devices must account for driving, leakage and detected output fields.18 · Chapter 2Master equations and decoherenceLindblad evolution models Markovian loss and dephasing in open quantum systems.19 · Chapter 3Plasmonic nanoparticlesCollective conduction-electron motion creates intense nanoscale optical near fields.20 · Chapter 3Surface plasmon polaritonsMetal–dielectric interfaces support bound electromagnetic surface waves.21 · Chapter 3Mie resonances and dielectric nanoantennasHigh-index dielectric particles support electric and magnetic multipolar resonances.22 · Chapter 3Metasurfaces and phase controlSubwavelength patterned surfaces tailor wavefront phase, amplitude and polarization.23 · Chapter 3Photonic integrated circuitsOn-chip waveguides, couplers and phase shifters implement scalable optical networks.24 · Chapter 3Ring resonators and frequency combsResonant circulating modes provide spectral filtering and nonlinear enhancement.25 · Chapter 4Quantum dots as single-photon sourcesConfined electronic states can emit antibunched photons on demand.26 · Chapter 4Color centers and solid-state spinsPoint defects can combine optical transitions with long-lived spin degrees of freedom.27 · Chapter 4Single-photon indistinguishabilityIdentical wavepackets are essential for high-visibility two-photon interference.28 · Chapter 4Hong–Ou–Mandel interferenceTwo indistinguishable photons entering a balanced beamsplitter leave together.29 · Chapter 4Spontaneous parametric down-conversionA second-order nonlinear medium can convert a pump photon into correlated signal and idler photons.30 · Chapter 4Spontaneous four-wave mixingThird-order nonlinearities generate photon pairs in fibers and integrated waveguides.31 · Chapter 4Entangled photon pairsPhotonic polarization, path, time-bin or frequency modes can share nonseparable states.32 · Chapter 4Linear optical quantum computingSingle photons, interferometers and measurements support photonic quantum information processing.33 · Chapter 5Photon-number resolving detectorsPhoton detection maps optical states into electronic measurement outcomes.34 · Chapter 5Quantum sensing with nanophotonicsNanostructures can enhance optical interaction with weak environmental signals.35 · Chapter 5Topological nanophotonicsEngineered photonic bands can host interface modes linked to bulk band invariants.36 · Chapter 5Chiral quantum opticsDirectional guided-mode coupling makes photon emission depend on emitter spin or polarization.37 · Chapter 5Near-field energy transferClosely spaced emitters can exchange excitation through dipole–dipole coupling.38 · Chapter 5Quantum nonlinear opticsAt the single-photon level, sufficiently strong interactions can alter transmission statistics.39 · Chapter 6Fabrication and disorderNanometre-scale fabrication errors modify optical spectra, loss and emitter coupling.40 · Chapter 6Numerical methods: FDTD and FEMComputational electromagnetics predicts nanophotonic resonances and field patterns.41 · Chapter 6Quantum-optical simulation workflowCouple classical mode design to a quantum open-system model.42 · Chapter 6Research roadmap and reproducibilityCredible nanophotonics research connects hypotheses, physical models and measurable observables.