• RIKEN demonstrates low‑noise, high‑gain Josephson traveling‑wave parametric amplifier (JTWPA) for quantum computing. • JTWPA delivers microwave photonic circuit with unprecedented noise suppression, boosting qubit readout fidelity. • Experimental results validate design, paving way for scalable 100‑qubit superconducting quantum processors. • High‑gain operation reduces measurement time, accelerating quantum algorithm development and error‑correction protocols. • Publication in Physical Review Applied underscores significance, attracting attention from industry and academia alike.

Article Summaries:

  • The low-noise, high-gain properties needed for high-performance quantum computing can be realized in a microwave photonic circuit device called a Josephson traveling-wave parametric amplifier (JTWPA), RIKEN researchers have shown experimentally. This advance stands to speed up development of superconducting quantum computer systems at the 100-qubit scale. The work is published in the journal Physical Review Applied.

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