2017/05/01 by Ravi Naik, R. K. Naik, Nelson L. C. Leung +14 · 135 citations
Computer Science · Physics and Astronomy · #Computer science #Electrical engineering #Physics #Quantum #Quantum Computing Algorithms and Architecture #Quantum Information and Cryptography #Quantum and electron transport phenomena #Quantum circuit #Quantum computer #Quantum entanglement #Quantum error correction #Quantum information #Quantum mechanics #Qubit #Topology (electrical circuits) #Transmon #cond-mat.mes-hall #cond-mat.supr-con #quant-ph
paper · pdf · doi:10.1038/s41467-017-02046-6
published in Nature Communications 8(1), 1904 (Nature Portfolio) · 7 pages, 5 figures, supplementary information ancillary file, 21 pages
arxiv created 2017/05/01 · openalex publication_date 2017/11/28 · arxiv updated 2017/12/08 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/06
Qubit connectivity is an important property of a quantum processor, with an ideal processor having random access-the ability of arbitrary qubit pairs to interact directly. This a challenge with superconducting circuits, as state-of-the-art architectures rely on only nearest-neighbor coupling. Here, we implement a random access superconducting quantum information processor, demonstrating universal operations on a nine-qubit memory, with a Josephson junction transmon circuit serving as the central processor. The quantum memory uses the eigenmodes of a linear array of coupled superconducting resonators. We selectively stimulate vacuum Rabi oscillations between the transmon and individual eigenmodes through parametric flux modulation of the transmon frequency. Utilizing these oscillations, we perform a universal set of quantum gates on 38 arbitrary pairs of modes and prepare multimode entangled states, all using only two control lines. We thus achieve hardware-efficient random access multi-qubit control in an architecture compatible with long-lived microwave cavity-based quantum memories.