Abstract

The implementation of quantum operations in photonic devices plays a major role towards quantum computing as light is a logical choice when low decoherence and stability is demanded [1]. Interestingly, waveguide architectures fabricated using the femtosecond laser-writing approach [2] are particularly useful for polarization-encoded on-chip quantum optics [3]. Beside the ability of realizing complex three-dimentional networks the modulation of polarization states yet remained challenging. Extending the approach of a precise tuning of the birefringence in laser-written waveguides by employing particular line defects close to the waveguide [4] we demonstrate an arbitrary wave plate operation on chip including Hadamard and Pauli-X gate operations for polarization-encoded qubits.

© 2015 IEEE