Extending superconducting qubit lifetimes: What’s Next?

Journal Article · Thu Sep 30 00:00:00 EDT 2021 · Journal Club for Condensed Matter Physics

DOI:https://doi.org/10.36471/jccm_september_2021_01· OSTI ID:1866115

Girvin, Steven M. ^[1]

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1. Yale Univ., New Haven, CT (United States)

The coherence times of superconducting qubits have risen approximately five orders of magnitude since 1998 when the first such qubit was measured by Nakamura and collaborators. This is fantastic progress but decoherence is still a major issue preventing us from escaping the NISQ (noisy intermediate-scale quantum) era and moving into the era in which we achieve practical quantum advantage on economically and scientifically useful tasks. Most of the progress to date has been achieved through creation of new qubit designs whose quantum states are intrinsically less sensitive to environmental noise and such work continues. Somoroff et al. use a novel ‘fluxonium’ low-frequency qubit design that has for the first time achieved coherence times exceeding one millisecond

• Research Organization: Brookhaven National Laboratory (BNL), Upton, NY (United States)
• Sponsoring Organization: USDOE Office of Science (SC), Basic Energy Sciences (BES)
• Grant/Contract Number: SC0012704
• OSTI ID: 1866115
• Report Number(s): BNL-222966-2022-JAAM
• Journal Information: Journal Club for Condensed Matter Physics, Journal Name: Journal Club for Condensed Matter Physics Journal Issue: 09 Vol. 2021; ISSN 9999-0054
• Publisher: Simons Foundation - University of California Riverside
• Country of Publication: United States
• Language: English

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97 MATHEMATICS AND COMPUTING