Quantum two-phase estimation inside a photonic integrated device
Abstract
Quantum Metrology aims at exploiting quantum resources to enhance the performances in measuring physical quantities. Photonic implementation easily allows the experimental investigation of these tasks. This work presents a photonic device able to demonstrate quantum simultaneous estimation of optical phases, surpassing results achieving by classical strategies. The chip realizes a reconfigurable threemode interferometer, fabricated by using the advanced femtosecond laser writing technique. The high degree of tunability is given by the presence of optical phase shifters, which makes the device useful both for investigating multiparameter quantum metrology, and for studying how machine learning techniques can improve the learning process.
Event details
- Event
- tc4-2020