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    Superconducting qubit that lasts for over 1 millisecond is primed for industrial scaling

    November 7, 2025, Categories  Physics, Technology/Electronics

    Princeton's new quantum chip built for scale
    A Princeton team has reported their new qubit lasts for over 1 millisecond, three times longer than the best ever reported in a lab setting, and nearly fifteen times longer than the industry standard for large-scale processors. Credit: Princeton University; Office of Communications; Matt Raspanti (2025)

    In a major step toward practical quantum computers, Princeton engineers have built a superconducting qubit that lasts three times longer than today’s best versions.

    “The real challenge, the thing that stops us from having useful quantum computers today, is that you build a qubit and the information just doesn’t last very long,” said Andrew Houck, Princeton’s dean of engineering and co-principal investigator. “This is the next big jump forward.”

    In an article in the journal Nature,...

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    Resurrecting Niobium for Quantum Science

    February 29, 2024, Categories  Uncategorized

    The Josephson junction is the information-processing heart of the superconducting qubit. Pictured here is the niobium Josephson junction engineered by David Schuster of Stanford University and his team. Their junction design has resurrected niobium as a viable option as a core qubit material.
    The Josephson junction is the information-processing heart of the superconducting qubit. Pictured here is the niobium Josephson junction engineered by David Schuster of Stanford University and his team. Their junction design has resurrected niobium as a viable option as a core qubit material. (Image by Alexander Anferov/the University of Chicago’s Pritzker Nanofabrication Facility.)

    Expanding possibilities for superconducting qubits. For years, niobium was considered an underperformer when it came to superconducting qubits. Now scientists supported by Q-NEXT have found a way to engineer a high-performing niobium-based qubit and so take advantage of niobium’s superior qualities.

    When it comes to quantum technology, niobium is making a comeback...

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