Created the largest quantum-photonic processor to date

Quantum computers will advance computing far beyond what modern computers are capable of.

But this potential is yet to comeimplement. In an attempt to demonstrate quantum supremacy, researchers working as part of the EU-funded PHOQUSING project are developing a hybrid computing system. It is based on advanced integrated photonics, which combines classical and quantum processes.

The goal of the project is to develop a quantum machine forsampling that will bring Europe to the forefront of photonic quantum computing. To this end, a partner of the PHOQUSING project in the Netherlands, QuiX Quantum, has created the largest quantum photonic processor compatible with quantum dots. These are nanometer-sized semiconductor crystals that emit light of various colors when illuminated with ultraviolet light. The processor is the central component of a quantum sampling machine.

Processor developed by researchgroup, is a 20-mode silicon nitride photonic chip of “record size.” It is optimized for use in the near-infrared wavelength range. It has 20 input modes with 190 unit cells and 380 custom elements.

The processor also has the most complex photonic chip in the world.available today. In addition to the large number of modes, the key characteristics of the quantum photonic processor are low optical loss (2.9 decibels per mode) and high accuracy (99.5% for permutation matrices and 97.4% for random Haar matrices). The turnkey processor also provides high quantum interference visibility (98%).

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