Quantum computing with superconducting qubits for quantum chemistry calculations
QTF Colloquium: Dr. Stefan Filipp (IBM Research, Zürich, Switzerland)
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Quantum computers hold the promise for outperforming conventional computers in certain types of problems such as the computation of energy spectra or the dynamics of molecular or condensed matter systems. An architecture based on fixed-frequency superconducting qubits is a particularly promising candidate to build a scalable quantum computing architecture because of its stability and the relatively long coherence times. In this talk I will present the platform and the methods that we use to calculate ground state energies of simple molecules. Variational algorithms with short circuit depth are employed which finish within the coherence time of the system. To further improve the accuracy of these results, we explore alternative methods to control qubit-qubit interactions based on parametrically driven flux-tunable couplers. These methods may enhance the efficiency of variational methods for quantum chemistry or optimization tasks with the prospect to carry out scientifically and commercially relevant computations soon.
The talk is part of the Quantum Technology Finland colloquium series.
