I am a big fan of your research work, especially your experiments on tunable couplers. I have some questions, specifically about tunable coupling architecture. You worked on suppressing photon shot noise to increase coherence times for a tunable coupler setup consisting of two transmons coupled to a superconducting island. Would it be possible to apply this idea to the currently implemented tunable coupler architecture proposed in 2018 by F. Yan?
Also, tunable coupler architecture has resulted in the implementation of high-fidelity two-qubit gates, which is not possible with static couplers. It has enabled realizing fidelity up to 99.85%, not counting the 99.9% fidelity gate result that was presented in the APS March meeting recently. Given this, how can we further improve on the coupling architecture? In what research directions do you see them being used in the future?
Finally, a general question pertaining to the field of superconducting circuits-based quantum computing. I would think one possibleresearch milestone achieved in the field in the coming years would be in Quantum Error Correction, given the recent paper by Google in regard to successfully implementing the five-distance surface code with their Sycamore qubit processing unit. What do you think are the big research goals in the field that would be achieved in the current decade and the next decade?
Looking forward to reading your replies, and thank you very much for the AMA.
numberandphase10 karma
Dear Prof. Houck,
I am a big fan of your research work, especially your experiments on tunable couplers. I have some questions, specifically about tunable coupling architecture. You worked on suppressing photon shot noise to increase coherence times for a tunable coupler setup consisting of two transmons coupled to a superconducting island. Would it be possible to apply this idea to the currently implemented tunable coupler architecture proposed in 2018 by F. Yan?
Also, tunable coupler architecture has resulted in the implementation of high-fidelity two-qubit gates, which is not possible with static couplers. It has enabled realizing fidelity up to 99.85%, not counting the 99.9% fidelity gate result that was presented in the APS March meeting recently. Given this, how can we further improve on the coupling architecture? In what research directions do you see them being used in the future?
Finally, a general question pertaining to the field of superconducting circuits-based quantum computing. I would think one possibleresearch milestone achieved in the field in the coming years would be in Quantum Error Correction, given the recent paper by Google in regard to successfully implementing the five-distance surface code with their Sycamore qubit processing unit. What do you think are the big research goals in the field that would be achieved in the current decade and the next decade?
Looking forward to reading your replies, and thank you very much for the AMA.
Best regards
numberandphase
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