Speeding up quantum computations by many-qubit logic
Quantum computing holds the promise of revolutionizing information processing by leveraging quantum phenomena like superposition and entanglement. However, realizing this potential requires overcoming numerous challenges. Traditional architectures often face limitations in terms of qubit connectivity and gate fidelity, hindering the efficient implementation of quantum algorithms. The solution may lie in trimon, a three-qubit quantum processor developed by researchers at the Tata Institute of Fundamental Research (TIFR) in Mumbai, India. This innovative device offers enhanced qubit-qubit coupling and access to native three-qubit gates, promising significant advancements in quantum computing.
The collaboration is a joint effort between Prof. Rajamani Vijayaraghavan - Tata Institute of Fundamental Research (TIFR), Mumbai, and Prof. Mikko Möttönen-Aalto University. According to Prof. Möttönen the PI of the project, "we believe that trimon could emerge as an efficient building block for near-term noisy intermediate-scale quantum (NISQ) computers. We are confident that our research will significantly advance the field of superconducting circuits and pave the way for practical quantum computing solutions". Basic characterization of the trimon device revealed promising results. This lays the foundation for implementing multi-qubit gates with high fidelity. Furthermore, theoretical studies conducted in collaboration with Finnish partners have explored the multimode nature of the unimon qubit, presenting exciting prospects for future quantum processors.
The project's implementation is structured into several tasks, including the fabrication of second-generation trimon devices and the characterization of many-qubit gates. Advanced techniques such as state tomography and randomized benchmarking will be employed to assess gate fidelity and performance. In addition, universal three qubit gates will be implemented to understand efficient quantum algorithms. The team plans to disseminate their findings through high-impact scientific publications and workshops/webinars aimed at fostering collaboration between Finnish and Indian researchers.
Speeding up 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.