Indo – Finnish collaboration to speedup of quantum computations by many-qubit logic

A team of experts in Quantum Technology from India and Finland join hands to improve the fidelity of the multi-qubit gate operations through a joint project. The project aims to demonstrate a method to implement all possible quantum gates acting on three qubits of a trimon system with a very brief sequence of physical control pulses. The synthesis of such a general quantum gate is based on the so-called cosine-sine matrix decomposition.
Artistic impression of an on-chip microwave source controlling qubits. Source: Visual design by Aleksandr Kakinen (2021).
Artistic impression of an on-chip microwave source controlling qubits. Source: Visual design by Aleksandr Kakinen (2021).

The project Speedup of Quantum Computations by Many-Qubit Logic is a collaboration between Aalto University, CSC – IT Center for Science, Finland, the University of Oulu, the University of Helsinki, VTT, and the Quantum Measurement and Control Laboratory (QuMaC lab) at Tata Institute of Fundamental Research (TIFR)-India. The project is being developed by Professor Mikko Möttönen-  Aalto University. The research partners are experts in handling quantum gates in the libraries of Finnish Quantum Computer (CSC-IT), the theory of superconducting circuits (University of Oulu), quantum simulations and software (VTT) and fabrication of trimon devices and 3D microwave cavity (Professor R. Vijayaraghavan, TIFR). This collaboration will provide a platform to implement a universal quantum gate to a newly developed three-qubit processor and make an impact on academic research and industrial R&D. 

According to Professor Mikko Möttönen, “quantum computing has the potential to revolutionize information processing in the future. By exploiting quantum phenomena like superposition and entanglement, quantum computers can solve problems that will remain intractable on classical supercomputers. However, efficient universal quantum computing has remained a challenge since most of the state-of-art architectures rely on nearest-neighbor coupling in one or two dimensions. With this high-fidelity general multi-qubit gate, trimon could emerge as an efficient building block for near-term noisy intermediate-scale quantum (NISQ) computers”.  

The research is divided into four consecutive steps with the QuMaC lab starting the initiative for the fabrication of trimon devices. The research team will further the research via the characterization of three qubits in trimon, characterization of many-qubit gates, and the characterization of universal gates. The research team will also host workshops and postdoc visits for outreach and knowledge dissemination.  

Speedup of Quantum Computations by Many-Qubit Logic is seed-funded as part of the India Pilot initiative from the Finnish Ministry of Education and Culture. Aalto is coordinating the India Pilot Network FICORE (Finnish Indian Consortia for Research and Education) which involves 38  higher education institutions from Finland and India. 

  • Published:
  • Updated:
URL copied!