128 Identical Quantum Sources Integrated on a Single Silica Chip

Integrated photon sources play a key role in quantum information science, but source nonuniformity prevents all circuit elements from being connected coherently. The authors address this longstanding challenge via birefringence engineering and nonlinear interaction locking femtosecond-laser direct writing, to yield 128 uniform integrated single chip. These are tunable different pumping regimes, for applications at large scale high dimension both discrete- continuous-variable approaches. This demonstrated scalability uniformity of will enable large-scale all-on-chip processors real-world applications.