A superconducting quantum memory with tens of milliseconds coherence time

Ofir Milul, Barkay Guttel, Uri Goldblatt, Sergey Hazanov, Lalit M Joshi, Daniel Chausovsky, Nitzan Kahn, Engin Çiftyürek, Fabien Lafont, Serge Rosenblum

Research output: Contribution to journalArticle


Storing quantum information for an extended period of time is essential for running quantum algorithms with low errors. Currently, superconducting quantum memories have coherence times of a few milliseconds, and surpassing this performance has remained an outstanding challenge. In this work, we report a qubit encoded in a novel superconducting cavity with a coherence time of 34 ms, an improvement of over an order of magnitude compared to previous demonstrations. We use this long-lived quantum memory to store a Schrödinger cat state with a record size of 1024 photons, indicating the cavity's potential for bosonic quantum error correction.
Original languageEnglish
Number of pages6
StateIn preparation - 13 Feb 2023


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