Analytical formulas are presented for planar capacitors used in transmon design. Tapering of the wire connecting to the Josephson junction is shown to significantly lower its loss.
The complexity of qubit control places size constraints on the control system. When working to understand quantum systems engineering, there are many constraints to building a scalable quantum computer. Here I discuss a constraint on the qubit control system from an information point of view, showing that the large amount of information needed for the
Information Constraints for Scalable Control in a Quantum Computer Read More »
Why 100 Ohm-cm wafers are needed to eliminate substrate dissipation at low-temperature.
High Resistivity Silicon Read More »
The promise of quantum computers is that certain computational tasks might be executed exponentially faster on a quantum processor than on a classical processor1 . A fundamental challenge is to build a high-fdelity processor capable of running quantum algorithms in an exponentially large computational space. Here we report the use of a processor with programmable
Quantum supremacy using a programmable superconducting processor Read More »
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