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TT: Fachverband Tiefe Temperaturen
TT 105: Focus Session: Mesoscopic Superconductivity and Quantum Circuits
TT 105.7: Talk
Friday, March 16, 2018, 12:35–12:50, H 0104
Quantum Chemistry with Superconducting Qubits — •Nikolaj Moll1, Stefan Filipp1, Andreas Fuhrer1, Jay M. Gambetta2, Antonio Mezzacapo2, and Kristan Temme2 — 1IBM Research – Zurich, Säumerstrasse 4, CH-8803 Rüschlikon, Switzerland — 2IBM T.J. Watson Research Center, Yorktown Heights, NY 10598, USA
Recent advances in the field of quantum computing have boosted the hope that one day we might be able to solve complex problems using quantum computers. Already smaller quantum processors with a couple of hundred physical qubits with no error correction will be available soon. Solving problems in quantum chemistry could benefit from such processors: Chemical systems could then be simulated and their properties, including correlation functions and reaction rates calculated. To calculate the ground states of chemical systems the quantum optimization based on the variational principle is especially suited. In this method, part of the computational load is transferred to the classical computer, while the complex trial wavefunctions are generated using entangling gates and single qubit rotations on the quantum processor. The advantage is that the calculation of the total energy can now be done efficiently using trial function of short depth and ideally run in much shorter time than the coherence time of the quantum processor.