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Random access quantum information processors using multimode circuit quantum electrodynamics

Journal Article · · Nature Communications
 [1];  [2];  [2];  [3];  [2];  [2];  [4];  [3];  [2]
  1. Univ. of Chicago, IL (United States). James Franck Inst. and Dept. of Physics; DOE/OSTI
  2. Univ. of Chicago, IL (United States). James Franck Inst. and Dept. of Physics
  3. Northwestern Univ., Evanston, IL (United States). Dept. of Physics and Astronomy
  4. IBM, Yorktown Heights, NY (United States). Thomas J. Watson Research Center

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.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States). Center for Nanoscale Materials (CNM)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); US Army Research Office (ARO); National Science Foundation (NSF); Packard Foundation
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1624062
Journal Information:
Nature Communications, Journal Name: Nature Communications Journal Issue: 1 Vol. 8; ISSN 2041-1723
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English

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Cited By (27)

Coupling a Superconducting Quantum Circuit to a Phononic Crystal Defect Cavity journal July 2018
Flux control of superconducting qubits at dynamical sweet spots preprint January 2019
Quantum electrodynamics in a topological waveguide text January 2020
Deterministic bidirectional communication and remote entanglement generation between superconducting qubits journal February 2019
Quantum control of an oscillator using a stimulated Josephson nonlinearity journal November 2019
Creation and control of multi-phonon Fock states in a bulk acoustic-wave resonator journal November 2018
Interacting Floquet polaritons journal July 2019
Compact 3D quantum memory journal May 2018
Microwave dual-mode resonators for coherent spin-photon coupling journal November 2018
A quantum engineer's guide to superconducting qubits journal June 2019
Superconducting circuit quantum computing with nanomechanical resonators as storage journal September 2018
Demonstration of a parametrically activated entangling gate protected from flux noise journal January 2020
Perfect Quantum State Transfer in a Superconducting Qubit Chain with Parametrically Tunable Couplings journal November 2018
Nonadiabatic Geometric Quantum Computation with Parametrically Tunable Coupling journal November 2018
Mode Structure in Superconducting Metamaterial Transmission-Line Resonators journal May 2019
Suppression of Qubit Crosstalk in a Tunable Coupling Superconducting Circuit journal November 2019
Landau-Zener-Stückelberg Interference in a Multimode Electromechanical System in the Quantum Regime journal December 2019
Hardware-Efficient Quantum Random Access Memory with Hybrid Quantum Acoustic Systems journal December 2019
Interacting Qubit-Photon Bound States with Superconducting Circuits journal February 2019
Resolving Phonon Fock States in a Multimode Cavity with a Double-Slit Qubit journal June 2019
Creation and control of multi-phonon Fock states in a bulk acoustic wave resonator text January 2018
Microwave dual-mode resonators for coherent spin-photon coupling text January 2018
Interacting Floquet polaritons preprint January 2018
Suppression of Qubit Crosstalk in a Tunable Coupling Superconducting Circuit text January 2018
Mode Structure in Superconducting Metamaterial Transmission Line Resonators text January 2018
Demonstration of a Parametrically-Activated Entangling Gate Protected from Flux Noise text January 2019
Resolving Phonon Fock States in a Multimode Cavity with a Double-Slit Qubit text January 2019

Figures / Tables (5)


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