Technical goal
QLASS has the goal of creating a new generation of 3D quantum photonic circuits (QPICs) combining the features of quantum dot based single photon sources, femtosecond laser writing for waveguides inscription in glass, and high-efficiency superconducting nanowire single photon detectors to generate, manipulate and detect single photons in a closed-loop system. Variational quantum algorithms will be developed to demonstrate the potential of high-performance integrated QPICs across various domains ranging from quantum chemistry to combinatorial optimization problems.
Work Packages
WP1
It aims at the fabrication of a low-loss and highly reconfigurable integrated 3D quantum photonic
processor based on femtosecond laser writing (FLW) fabrication technique, optimized glass
substrate composition, high-efficiency fiber-to-waveguide coupling and thermal shifters.
WP2
It aims at the development of an advanced single photon source system based on quantum-dot (QD) sources and efficient time-to-spatial demultiplexing, with high performance levels in terms of generation rate, photon purity and indistinguishability.
WP3
It aims at the development of high-efficiency superconducting nanowire single photon detectors (SNSPDs) tailored to detect the events resulting from quantum manipulation of single photons produced by the source.
WP4
It aims at the development of a closed loop control system based on coincidence measurements and thermal phase shifter driving. The integrated QPIC platform performance will be optimized on the basis of specific cost functions defined by the implemented variational quantum algorithm.
WP5
It aims at the development of variational quantum algorithms (VQAs) exploiting the features of the integrated QPIC platform and incorporating error mitigation techniques. Ground state properties computation for optimizing the performance of electric vehicles batteries will be used to demonstrate the potential of combining VQAs and the integrated QPIC platform.
WP6
It aims at the maximization of impact, public acceptance, and translation of QLASS’s results.
WP7
It aims at the coordination and oversight of the project to maximize its success chances and innovation.
