Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Recipes for the digital quantum simulation of lattice spin systems
G. Burkard·Sep 16, 2022
<jats:p>We describe methods to construct digital quantum simulation algorithms for quantum spin systems on a regular lattice with local interactions. In addition to tools such as the Trotter-Suzuki expansion and graph coloring, we also discuss the ef...
Vanishing 2-Qubit Gates with Non-Simplification ZX-Rules
R. Krueger·Sep 14, 2022
Traditional quantum circuit optimization is performed directly at the circuit level. Alternatively, a quantum circuit can be translated to a ZX-diagram which can be simplified using the rules of the ZX-calculus, after which a simplified circuit can b...
Quantum algorithm for ground state energy estimation using circuit depth with exponentially improved dependence on precision
Guoming Wang, Daniel Stilck Francca, Ruizhe Zhang +2 more·Sep 14, 2022
A milestone in the field of quantum computing will be solving problems in quantum chemistry and materials faster than state-of-the-art classical methods. The current understanding is that achieving quantum advantage in this area will require some deg...
Post-selection-free preparation of high-quality physical qubits
Ben Barber, Neil I. Gillespie, J. Taylor·Sep 12, 2022
Rapidly improving gate fidelities for coherent operations mean that errors in state preparation and measurement (SPAM) may become a dominant source of error for fault-tolerant operation of quantum computers. This is particularly acute in superconduct...
BQA: a high-performance quantum circuits scheduling strategy based on heuristic search
Xin-miao Chen, Shi Wang, Yong-jin Ye +2 more·Sep 8, 2022
Quantum computing is currently a research hotspot in both academia and industry. The inherent parallelism of quantum computers and the resulting powerful computing power will bring new solutions to many problems that are difficult for classical compu...
Quantum computing teaching with CoSpaces
F. Sisini, Igor Ciminelli, F. Bovino·Sep 7, 2022
The first prototypes of quantum computers sparked interest in quantum computing and the basic principles of quantum mechanics. The education project on the physical bases of quantum computing is part of this context, based on the experimental descrip...
Prog-QAOA: Framework for resource-efficient quantum optimization through classical programs
Bence Bak'o, A. Glos, Özlem Salehi +1 more·Sep 7, 2022
Current state-of-the-art quantum optimization algorithms require representing the original problem as a binary optimization problem, which is then converted into an equivalent cost Hamiltonian suitable for the quantum device. Implementing each term o...
Synthesizing efficient circuits for Hamiltonian simulation
Priyanka Mukhopadhyay, N. Wiebe, Hong Zhang·Sep 7, 2022
We provide an approach for compiling quantum simulation circuits that appear in Trotter, qDRIFT and multi-product formulas to Clifford and non-Clifford operations that can reduce the number of non-Clifford operations. The total number of gates, espec...
A quantum segmentation algorithm based on local adaptive threshold for NEQR image
Lu Wang, Wenjie Liu·Sep 6, 2022
The classical image segmentation algorithm based on local adaptive threshold can effectively segment images with uneven illumination, but with the increase of the image data, the real-time problem gradually emerges. In this paper, a quantum segmentat...
Hardware-Conscious Optimization of the Quantum Toffoli Gate
M. Bowman, P. Gokhale, Jeffrey Larson +2 more·Sep 6, 2022
While quantum computing holds great potential in combinatorial optimization, electronic structure calculation, and number theory, the current era of quantum computing is limited by noisy hardware. Many quantum compilation approaches can mitigate the ...
Initial-State Dependent Optimization of Controlled Gate Operations with Quantum Computer
Wonho Jang, K. Terashi, M. Saito +5 more·Sep 6, 2022
There is no unique way to encode a quantum algorithm into a quantum circuit. With limited qubit counts, connectivity, and coherence times, a quantum circuit optimization is essential to make the best use of near-term quantum devices. We introduce a n...
The Compression Optimality of Asymmetric Numeral Systems
J. Pieprzyk, J. Duda, M. Pawlowski +3 more·Sep 6, 2022
Source coding has a rich and long history. However, a recent explosion of multimedia Internet applications (such as teleconferencing and video streaming, for instance) renews interest in fast compression that also squeezes out as much redundancy as p...
OneQ: A Compilation Framework for Photonic One-Way Quantum Computation
Hezi Zhang, Anbang Wu, Yuke Wang +4 more·Sep 4, 2022
In this paper, we propose OneQ, the first optimizing compilation framework for one-way quantum computation towards realistic photonic quantum architectures. Unlike previous compilation efforts for solid-state qubit technologies, our innovative framew...
Shuttling an Electron Spin through a Silicon Quantum Dot Array
A. Zwerver, S. Amitonov, S. L. de Snoo +5 more·Sep 2, 2022
Coherent links between qubits separated by tens of micrometers are expected to facilitate scalable quantum computing architectures for spin qubits in electrically-defined quantum dots. These links create space for classical on-chip control electronic...
Relating the multi-angle quantum approximate optimization algorithm and continuous-time quantum walks on dynamic graphs
R. Herrman·Sep 1, 2022
In this work, we show that ma-QAOA is equivalent to a restriction of continuous-time quantum walks on dynamic graphs. We then show it is universal for computation by finding the appropriate $B$ and $C$ operators and angles that implement the universa...
Reducing Runtime Overhead via Use-Based Migration in Neutral Atom Quantum Architectures
Andrew Litteken, Jonathan M. Baker, F. Chong·Sep 1, 2022
Neutral atoms are a promising choice for scalable quantum computing architectures. Features such as long distance interactions and native multiqubit gates offer reductions in communication costs and operation count. However, the trapped atoms used as...
Advanced Quantum Poisson Solver in the NISQ era
Walter Robson, K. Saha, Connor Howington +2 more·Sep 1, 2022
The Poisson equation has many applications across the broad areas of science and engineering. Most quantum algorithms for the Poisson solver presented so far, either suffer from lack of accuracy and/or are limited to very small sizes of the problem, ...
Variational Quantum Circuits for Multi-Qubit Gate Automata
Arunava Majumder, D. Lewis, Akshaya Jayashankar +2 more·Aug 31, 2022
Implementing quantum operations in the form of natural Hamiltonian dynamics is desirable, since they almost require no external control or feedback. In this work, we propose a NISQ-friendly quantum-classical hybrid approach to designing a time-indepe...
Timing Constraints Due to Real-Time Graph-Traversal Algorithms on Incomplete Cluster States in Photonic Measurement-Based Quantum Computing
J. Scott, K. Balram·Aug 31, 2022
Understanding the computational overheads imposed by classical control systems on quantum computing platforms becomes critically important as these quantum machines grow in scale and complexity. In this work, we calculate the overheads imposed by the...
Cycle index polynomials and generalized quantum separability tests
Zachary P. Bradshaw, Margarite L. LaBorde, M. Wilde·Aug 31, 2022
The mixedness of one share of a pure bipartite state determines whether the overall state is a separable, unentangled one. Here we consider quantum computational tests of mixedness, and we derive an exact expression of the acceptance probability of s...