Demonstration of quantum volume 64 on a superconducting quantum computing system

By P. Jurcevic, Ali Javadi-Abhari, Lev S. Bishop, I. Lauer, D. Bogorin, M. Brink, L. Capelluto, Oktay Günlük, Toshinari Itoko, Naoki Kanazawa and 21 more. Quantum Science and Technology, 2020

501 citations recorded by the source corpus.

We improve the quality of quantum circuits on superconducting quantum computing systems, as measured by the quantum volume (QV), with a combination of dynamical decoupling, compiler optimizations, shorter two-qubit gates, and excited state promoted readout. This result shows that the path to larger QV systems requires the simultaneous increase of coherence, control gate fidelities, measurement fidelities, and smarter software which takes into account hardware details, thereby demonstrating the need to continue to co-design the software and hardware stack for the foreseeable future.

Subfields: Artificial Intelligence, Atomic and Molecular Physics, and Optics

View Paper: https://www.semanticscholar.org/paper/1ddb24103c5089fd2bdfc05af41c69f39cfacc88

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In Artificial Intelligence

In Atomic and Molecular Physics, and Optics

Citations in the corpus

Quantum error mitigation (2022, background): “…to see reports of experiments demonstrating high-quality control over multiple qubits [see e.g. Asavanant et al. (2019); Ebadi et al. (2021); Jurcevic et al. (2021); Madjarov et al. (2020); and Xue et al. (2022)], some even reaching beyond 50 qubits [see e.g. Arute et al. (2019) and Wu et…”
Dynamical decoupling for superconducting qubits: A performance survey (2022, background): “For example, DD pulses have been inserted into idle spaces to improve circuit performance [43, 45, 47, 90, 91].”
Quantum simulation and computing with Rydberg-interacting qubits (2020, background): “≈ 10 (Sec III), similar to the latest reported demonstrations with SC quantum circuits 10,73 and trapped ions 19,74–76 .”
Probabilistic error cancellation with sparse Pauli–Lindblad models on noisy quantum processors (2022, methodology): “Coherence — Processor ibm hanoi had a quantum volume of 64 [40] and average energy-relaxation T 1 and Hanh echo T E 2 times of 151 µ s and 107 µ s, respectively.”
Quantum optimal control in quantum technologies. Strategic report on current status, visions and goals for research in Europe (2022, methodology): “Based on these methods, gates can be calibrated across a complete quantum processor to reach high quantum volumes [314, 549].”
Materials challenges and opportunities for quantum computing hardware (2021, background): “Record fidelities include a single-qubit gate fidelity of 99.97% ( 47 ), readout fidelity of 99.8% ( 47 ), de and two-qubit gate fidelity of 99.5% ( 47 ).”
Suppression of Crosstalk in Superconducting Qubits Using Dynamical Decoupling (2021, background): “[30] Petar Jurcevic, Ali Javadi-Abhari, Lev S Bishop, Isaac Lauer, Daniela F Bogorin, Markus Brink, Lauren Capelluto, Oktay Günlük, Toshinari Itoko, Naoki Kanazawa, Abhinav Kandala, George A Keefe, Kevin Krsulich, William Landers, Eric P Lewandowski, Douglas T McClure, Giacomo Nannicini, Adinath Nar”
Noise-induced barren plateaus in variational quantum algorithms (2020, background): “At time of writing this holds the record for the largest quantum volume measured on an IBM Quantum device, which was demonstrated on a line of 6 qubits [80].”
High-fidelity parallel entangling gates on a neutral-atom quantum computer (2023, methodology): “They demonstrate the functionality of these gates by preparing and measuring Bell states in parallel with up to 10 atom pairs.”