Simple yet Accurate Stochastic Approach to the Quantum Phase Noise of Nanolasers
arXiv:2412.14347 · doi:10.1103/PhysRevLett.134.213804
Abstract
Nanolasers operating at low power levels are strongly affected by intrinsic quantum noise, influencing both intensity fluctuations and laser coherence. Starting from semiclassical rate equations and making a simple hypothesis for the phase of the laser field, a simple stochastic model for the laser quantum noise is suggested. The model is shown to agree quantitatively with quantum master equations for microscopic lasers with a small number of emitters and with classical Langevin equations for macroscopic systems. In contrast, neither quantum master equations nor classical Langevin equations adequately address the mesoscopic regime. The stochastic approach is used to calculate the linewidth throughout the transition to lasing, where the linewidth changes from being dominated by the particlelike nature of photons below threshold to the wavelike nature above threshold, where it is strongly influenced by index fluctuations enhancing the linewidth.
References in corpus (11)
- Electro-Optic Modulation of Single Photons
- Photon Shot Noise Dephasing in the Strong-Dispersive Limit of Circuit QED
- QuantumCumulants.jl: A Julia framework for generalized mean-field equations in open quantum systems
- Stochastic Simulator for modeling the transition to lasing
- Electrically-driven Photonic Crystal Lasers with Ultra-low Threshold
- Creating large Fock states and massively squeezed states in optics using systems with nonlinear bound states in the continuum
- Semiconductor Laser Linewidth Theory Revisited
- Thermal, quantum anti-bunching and lasing thresholds from single emitters to macroscopic devices
- Quantum Langevin approach for superradiant nanolasers
- Quantum density matrix theory for a laser without adiabatic elimination of the population inversion: transition to lasing in the class-B limit
- A stochastic approach to the quantum noise of a single-emitter nanolaser