128 Identical Quantum Sources Integrated on a Single Silica Chip
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 in femtosecond-laser direct writing, to yield 128 uniform quantum sources integrated in a single chip. …