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Orange QS contributes to the development of a novel hybrid qubit – the Kitmon

Orange Quantum Systems is part of a scientific consortium led by the TU Delft, that has received a Pathfinder grant from the European Innovation Council (EIC). The consortium aims to develop a novel hybrid qubit, the Kitmon. This qubit is expected to be better protected from the decoherence mechanisms that currently limit the mainstream use of qubits in quantum computing. The project was kicked off in November 2023 by consortium members from the TU Delft, IOM Materials Foundry at the Italian National Research Council (CNR), Institute of Science and Technology Austria (ISTA), Energiatudomanyi Kutatokozpont (EK), Spanish National Research Council (CSIC) and University of Augsburg.

 

The QuKiT consortium is led by TU Delft, with members IOM Materials Foundry at the Italian National Research Council (CNR), Institute of Science and Technology Austria (ISTA), Energiatudomanyi Kutatokozpont (EK), Spanish National Research Council (CSIC), University of Augsburg and Orange Quantum Systems.

 

The innovative approach lies in leveraging the sophisticated qubit control techniques already developed for conventional transmon qubits, while eliminating the most dominant sources of qubit errors. This can be potentially achieved in a hybrid system comprising a superconducting qubit coupled to a topologically protected Kitaev chain – hence the name Kitaev Transmon or ‘Kitmon’ for this new qubit type.

A collaborative effort of the members of the consortium will work towards achieving this ambitious goal. The starting point will be a state-of-the-art hybrid superconducting-semiconductor two-dimensional  platform developed by IOM. The TU Delft, ISTA, EK, CSIC and University of Augsburg will then realize the Kitaev chain and incorporate it into a Kitmon architecture. Finally, Orange QS will make sure that the Kitmon qubits can be controlled and tested with a well-integrated hardware/software system. The system will be capable of automated tuning of quantum dots and applying single-qubit and two-qubit gates. To enable the testing of Kitmon devices within the project, Orange QS will develop a custom Orange Rack.

The standard Orange QS products for R&D on quantum devices are currently fit for developing conventional superconducting qubits or cryogenic amplifiers. With this project, we investigate the necessary adjustments of the Quantum Diagnostics Libraries and the Orange Rack to hybrid qubits and pave the way towards products for testing semiconductor-based spin qubits.

More information can be found on the QuKiT project page.