Superconducting cavity qubit with tens of milliseconds single-photon coherence time

Autor:	Milul, Ofir, Guttel, Barkay, Goldblatt, Uri, Hazanov, Sergey, Joshi, Lalit M., Chausovsky, Daniel, Kahn, Nitzan, Çiftyürek, Engin, Lafont, Fabien, Rosenblum, Serge
Rok vydání:	2023
Předmět:	Quantum Physics
Zdroj:	PRX Quantum 4, 030336 (2023)
Druh dokumentu:	Working Paper
DOI:	10.1103/PRXQuantum.4.030336
Popis:	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 Schr\"odinger cat state with a record size of 1024 photons, indicating the cavity's potential for bosonic quantum error correction. Comment: 16 pages, 11 figures, including supplementary information
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2302.06442 Zobrazit plný text záznamu View this record from Arxiv