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

doi:10.48550/arxiv.2302.06442

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A superconducting quantum memory with tens of milliseconds coherence time

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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 and Serge Rosenblum

ArXiv.org

13/Feb/2023

DOI: https://doi.org/10.48550/arxiv.2302.06442

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Preprint (Author's original)CC BY-NC-ND V4.0, Open Access

Abstract

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.

Physics - Quantum Physics

Details

Title: A superconducting quantum memory with tens of milliseconds coherence time
Creators: Ofir Milul - 972WIS_INST___90
Barkay Guttel - 972WIS_INST___90
Uri Goldblatt - 972WIS_INST___90
Sergey Hazanov - 972WIS_INST___90
Lalit M Joshi - 972WIS_INST___90
Daniel Chausovsky - 972WIS_INST___90
Nitzan Kahn - 972WIS_INST___90
Engin Çiftyürek - 972WIS_INST___90
Fabien Lafont - 972WIS_INST___90
Serge Rosenblum - 972WIS_INST___90
Resource Type: Preprint
Publication Details: ArXiv.org
Number of pages: 6
Language: English
DOI: https://doi.org/10.48550/arxiv.2302.06442
Grant note: We thank Benny Pasmantirer, Michael Rappaport, Haim Sade, and Zeng Hui for their contributions in designing the niobium cavity. The cavity was manufactured by RI Research Instruments GmbH under the supervision of Peter vom Stein. We acknowledge input from David Schuster and Andrew Oriani on cavity etching methods, and comments on the manuscript from Philippe Campagne-Ibarcq and Shay Hacohen-Gourgy. We acknowledge financial support by the Israel Science Foundation and the European Research Council starting investigator grant Q-CIRC 134847. S.R. is the incumbent of the Rabbi Dr. Roger Herst Career Development Chair.
Record Identifier: 993431084203596

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