Addressing infrastructure requirements for the coherent control of large superconducting quantum systems
ORAL
Abstract
Superconducting-qubit systems are a promising platform for the implementation of error-corrected, fault-tolerant quantum computers, for which the surface code is a prominent approach. We consider an architecture where a repeatable tile of flux-tunable qubits, coupled through capacitive tunable couplers, is repeated to create lattices of qubits that can be controlled with minimal footprint and overhead, in a way amenable to the implementation of the surface code. Focusing on problems arising from the need to extend such platforms to relevant system sizes, while ensuring their coherent control, we propose various methods for the enhancement of control infrastructure required for 3D-integrated qubit designs. We do so at various levels of abstraction, from the qubit chip to the control software required for system calibration, including cryogenic package assemblies, signal delivery and room-temperature control electronics. Preliminary characterization of these will be presented.
*This work is supported in part by the U.S. Department of Energy, Office of Science, National Quantum Information Science Research Centers, Quantum Systems Accelerator; by the Defense Advanced Research Projects Agency under the Quantum Benchmarking contract; and by the U.S. Department of Energy under Air Force Contract No. FA8702-15-D-0001. The views and conclusions contained herein are those of the authors and should not be interpreted as necessarily representing the official policies or endorsements, either expressed or implied, of the U.S. Government.
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Presenters
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Miguel S. Moreira
- Massachusetts Institute of Technology