Papers
Live trends in quantum computing research, updated daily from arXiv.
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15,383 papers in 12 months (-8% vs prior quarter)
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Hungarian Qubit Assignment for Optimized Mapping of Quantum Circuits on Multi-Core Architectures
Pau Escofet, Anabel Ovide, C. G. Almudéver +2 more·Jul 1, 2023
Modular quantum computing architectures offer a promising alternative to monolithic designs for overcoming the scaling limitations of current quantum computers. To achieve scalability beyond small prototypes, quantum architectures are expected to ado...
Fault-Tolerant Code-Switching Protocols for Near-Term Quantum Processors
Friederike Butt, Sascha Heußen, M. Rispler +1 more·Jun 30, 2023
Topological color codes are widely acknowledged as promising candidates for fault-tolerant quantum computing. Neither a two-dimensional nor a three-dimensional topology, however, can provide a universal gate set {, , }, with the gate missing in the t...
Improved parameter targeting in 3D-integrated superconducting circuits through a polymer spacer process
G. Norris, L. Michaud, D. Pahl +4 more·Jun 30, 2023
Three-dimensional device integration facilitates the construction of superconducting quantum information processors with more than several tens of qubits by distributing elements such as control wires, qubits, and resonators between multiple layers. ...
Tailoring quantum error correction to spin qubits
Bence Het'enyi, James R. Wootton·Jun 30, 2023
Spin qubits in semiconductor structures bring the promise of large-scale 2D integration, with the possibility to incorporate the control electronics on the same chip. In order to perform error correction on this platform, the characteristic features ...
Classical benchmarking of zero noise extrapolation beyond the exactly-verifiable regime
Sajant Anand, K. Temme, A. Kandala +1 more·Jun 30, 2023
In a recent work a quantum error mitigation protocol was applied to the expectation values obtained from circuits on the IBM Eagle quantum processor with up $127$ - qubits with up to $60 \; - \; \mbox{CNOT}$ layers. To benchmark the efficacy of this ...
Clifford Group and Unitary Designs under Symmetry
Yosuke Mitsuhashi, N. Yoshioka·Jun 30, 2023
We have generalized the well-known statement that the Clifford group is a unitary 3-design into symmetric cases by extending the notion of unitary design. Concretely, we have proven that a symmetric Clifford group is a symmetric unitary 3-design if a...
Partial Syndrome Measurement for Hypergraph Product Codes
Noah F. Berthusen, D. Gottesman·Jun 29, 2023
Hypergraph product codes are a promising avenue to achieving fault-tolerant quantum computation with constant overhead. When embedding these and other constant-rate qLDPC codes into 2D, a significant number of nonlocal connections are required, posin...
Demonstrating Bayesian quantum phase estimation with quantum error detection
Kentaro Yamamoto, Samuel Duffield, Y. Kikuchi +1 more·Jun 29, 2023
Quantum phase estimation (QPE) serves as a building block of many different quantum algorithms and finds important applications in computational chemistry problems. Despite the rapid development of quantum hardware, experimental demonstration of QPE ...
Control of an Environmental Spin Defect beyond the Coherence Limit of a Central Spin
Alexander Ungar, P. Cappellaro, Alexandre Cooper +1 more·Jun 29, 2023
Electronic spin defects in the environment of an optically-active spin can be used to increase the size and hence the performance of solid-state quantum registers, especially for applications in quantum metrology and quantum communication. Previous w...
Universal Quantum Optimization with Cold Atoms in an Optical Cavity.
Meng Ye, Ye Tian, Jian Lin +6 more·Jun 29, 2023
Cold atoms in an optical cavity have been widely used for quantum simulations of many-body physics, where the quantum control capability has been advancing rapidly in recent years. Here, we show the atom cavity system is universal for quantum optimiz...
Superselection rules, quantum error correction, and quantum chromodynamics
N. Bao, ChunJun Cao, A. Chatwin-Davies +2 more·Jun 29, 2023
We investigate the relationship between superselection rules and quantum error correcting codes. We demonstrate that the existence of a superselection rule implies the Knill-Laflamme condition in quantum error correction. As an example, we examine th...
Quantum data learning for quantum simulations in high-energy physics
Lento Nagano, Alexander Miessen, Tamiya Onodera +3 more·Jun 29, 2023
Quantum machine learning with parametrised quantum circuits has attracted significant attention over the past years as an early application for the era of noisy quantum processors. However, the possibility of achieving concrete advantages over classi...
Tunable coupler to fully decouple and maximally localize superconducting qubits
Lukas Heunisch, C. Eichler, M. Hartmann·Jun 29, 2023
Enhancing the capabilities of superconducting quantum hardware, requires higher gate fidelities and lower crosstalk, particularly in larger scale devices, in which qubits are coupled to multiple neighbors. Progress towards both of these objectives wo...
Modeling the performance of early fault-tolerant quantum algorithms
Qiyao Liang, Yiqing Zhou, Archismita Dalal +1 more·Jun 29, 2023
Progress in fault-tolerant quantum computation (FTQC) has driven the pursuit of practical applications with early fault-tolerant quantum computers (EFTQC). These devices, limited in their qubit counts and fault-tolerance capabilities, require algorit...
Greedy gradient-free adaptive variational quantum algorithms on a noisy intermediate scale quantum computer
C'esar Feniou, M. Hassan, Baptiste Claudon +4 more·Jun 29, 2023
Hybrid quantum-classical adaptive Variational Quantum Eigensolvers (VQE) hold the potential to outperform classical computing for simulating many-body quantum systems. However, practical implementations on current quantum processing units (QPUs) are ...
Si/SiGe QuBus for single electron information-processing devices with memory and micron-scale connectivity function
R. Xue, Max Beer, Inga Seidler +6 more·Jun 28, 2023
The connectivity within single carrier information-processing devices requires transport and storage of single charge quanta. Single electrons have been adiabatically transported while confined to a moving quantum dot in short, all-electrical Si/SiGe...
The SpinBus architecture for scaling spin qubits with electron shuttling
Matthias Künne, Alexander Willmes, Max Oberländer +10 more·Jun 28, 2023
Quantum processor architectures must enable scaling to large qubit numbers while providing two-dimensional qubit connectivity and exquisite operation fidelities. For microwave-controlled semiconductor spin qubits, dense arrays have made considerable ...
Parallel multi-two-qubit swap gate via quantum nondemolition interaction of orbital-angular-momentum light and an atomic ensemble
E. N. Bashmakova, E. A. Vashukevich, T. Golubeva·Jun 28, 2023
Nowadays quantum SWAP gate has become an integral part of quantum computing, so investigation of methods of its realization seems to be an important practical problem for various quantum-optical and information applications. In the present paper we p...
Exponential separations between classical and quantum learners
Casper Gyurik, V. Dunjko·Jun 28, 2023
Despite significant effort, the quantum machine learning community has only demonstrated quantum learning advantages for artificial cryptography-inspired datasets when dealing with classical data. In this paper we address the challenge of finding lea...
Increasing the Measured Effective Quantum Volume with Zero Noise Extrapolation
Elijah Pelofske, Vincent Russo, Ryan Larose +5 more·Jun 28, 2023
Quantum volume is a full-stack benchmark for near-term quantum computers. It quantifies the largest size of a square circuit which can be executed on the target device with reasonable fidelity. Error mitigation is a set of techniques intended to remo...