Photon-Noise-Tolerant Dispersive Readout of a Superconducting Qubit Using a Nonlinear Purcell Filter

Photon-Noise-Tolerant Dispersive Readout of a Superconducting Qubit Using a Nonlinear Purcell Filter

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Residual noise photons in a readout resonator become a major source of dephasing for a superconducting qubit when the resonator is optimized for a fast, high-fidelity dispersive readout. Here, we propose and demonstrate a nonlinear Purcell filter that suppresses such an undesirable dephasing process...

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Bibliographic Details
Main Authors: Yoshiki Sunada, Kenshi Yuki, Zhiling Wang, Takeaki Miyamura, Jesper Ilves, Kohei Matsuura, Peter A. Spring, Shuhei Tamate, Shingo Kono, Yasunobu Nakamura
Format: Article
Language:English
Published: American Physical Society 2024-01-01
Series:PRX Quantum
Online Access:http://doi.org/10.1103/PRXQuantum.5.010307

Internet

http://doi.org/10.1103/PRXQuantum.5.010307

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