On-chip quantum states generation by incoherent light.

ABSTRACT: On-chip quantum sources based on nonlinear processes are pivotal components in integrated photonics, driving significant advancements in quantum information technologies over recent decades. Usually, the pump coherence has been considered to be crucial for ensuring the quality of generated states, therefore incoherent light is rarely used in quantum information processing. In this work, we explore and reveal the constructive influence of pumped temporal incoherence on the quantum properties of photon sources. Taking silicon waveguides as nonlinear media, we theoretically show that temporal incoherence of light can improve pump utilization efficiency, resulting in higher source brightness in a spontaneous four-wave mixing process. Compared with coherent lasers, the frequency-uncorrelated ch

SUBMITTER: Song YW 

PROVIDER: S-EPMC12748943 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature