Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Clifford Algebras, Quantum Neural Networks and Generalized Quantum Fourier Transform
M. Trindade, V.N.A. Lula-Rocha, S. Floquet +1 more·Jun 3, 2022
We propose models of quantum perceptrons and quantum neural networks based on Clifford algebras. These models are capable to capture geometric features of classical and quantum data as well as producing data entanglement. Due to their representations...
Error mitigation for quantum kernel based machine learning methods on IonQ and IBM quantum computers
S. Moradi, C. Brandner, Macauley Coggins +3 more·Jun 3, 2022
Kernel methods are the basis of most classical machine learning algorithms such as Gaussian Process (GP) and Support Vector Machine (SVM). Computing kernels using noisy intermediate scale quantum (NISQ) devices has attracted considerable attention du...
Ternary Unitary Quantum Lattice Models and Circuits in 2+1 Dimensions.
Richard M. Milbradt, Lisa Scheller, C. Assmus +1 more·Jun 3, 2022
We extend the concept of dual unitary quantum gates introduced in Phys. Rev. Lett. 123, 210601 (2019)PRLTAO0031-900710.1103/PhysRevLett.123.210601 to quantum lattice models in 2+1 dimensions, by introducing and studying ternary unitary four-particle ...
Probing finite-temperature observables in quantum simulators of spin systems with short-time dynamics
A. Schuckert, A. Bohrdt, E. Crane +1 more·Jun 3, 2022
Preparing finite temperature states in quantum simulators of spin systems, such as trapped ions or Rydberg atoms in optical tweezers, is challenging due to their almost perfect isolation from the environment. Here, we show how finite-temperature obse...
Limitations on quantum key repeaters for all key correlated states
Leonard Sikorski, Karol Horodecki, Łukasz Pawela·Jun 2, 2022
Quantum key repeater is the backbone of the future Quantum Internet. It is an open problem to determine, for an arbitrary mixed bipartite state shared between the stations of a quantum key repeater, how much key can be generated between its two end-n...
Simulating quantum circuits using tree tensor networks
Philipp Seitz, Ismael Medina, E. Cruz +2 more·Jun 2, 2022
We develop and analyze a method for simulating quantum circuits on classical computers by representing quantum states as rooted tree tensor networks. Our algorithm first determines a suitable, fixed tree structure adapted to the expected entanglement...
Ideal refocusing of an optically active spin qubit under strong hyperfine interactions
Leon Zaporski, Noah Shofer, J. Bodey +14 more·Jun 2, 2022
Optically active semiconductor quantum dots have so far suffered from nuclear inhomogeneity limiting all dynamical decoupling measurements to a few microseconds. Lattice-matched GaAs–AlGaAs quantum dots now enable decoupling schemes to achieve a 0.11...
Optimized Quantum Phase Estimation for Simulating Electronic States in Various Energy Regimes.
Christopher Kang, Nicholas P. Bauman, S. Krishnamoorthy +1 more·Jun 2, 2022
While quantum algorithms for simulations exhibit better asymptotic scaling than their classical counterparts, they currently cannot be accurately implemented on real-world devices. Instead, chemists and computer scientists rely on costly classical si...
Authentication of quantum key distribution with post-quantum cryptography and replay attacks
Liu-Jun Wang, You Zhou, Jianfeng Yin +1 more·Jun 2, 2022
With the development of quantum computers, traditional cryptographic systems are facing more and more serious security threats. Fortunately, quantum key distribution (QKD) and post-quantum cryptography (PQC) are two cryptographic mechanisms with quan...
Improving Quantum Computation by Optimized Qubit Routing
Friedrich Wagner, Andreas Bärmann, F. Liers +1 more·Jun 2, 2022
In this work we propose a high-quality decomposition approach for qubit routing by swap insertion. This optimization problem arises in the context of compiling quantum algorithms formulated in the circuit model of computation onto specific quantum ha...
Quantum support vector machine without iteration
Rui Zhang, Jian Wang, Nan Jiang +1 more·Jun 2, 2022
Quantum algorithms can enhance machine learning in different aspects. In 2014, Rebentrost $et~al.$ constructed a least squares quantum support vector machine (LS-QSVM), in which the Swap Test plays a crucial role in realizing the classification. Howe...
Quantum circuits for discrete graphical models
N. Piatkowski, Christa Zoufal·Jun 1, 2022
Graphical models are useful tools for describing structured high-dimensional probability distributions. The development of efficient algorithms for generating samples thereof remains an active research topic. In this work, we provide a quantum algori...
A technical note for a Shor's algorithm by phase estimation
G. Fleury, P. Lacomme·Jun 1, 2022
The objective of this paper concerns at first the motivation and the method of Shor's algorithm including an excursion into quantum mechanics and quantum computing introducing an algorithmic description of the method. The corner stone of the Shor's a...
Device-independent Quantum Fingerprinting for Large Scale Localization
A. Shokry, Maged A. Youssef·Jun 1, 2022
Although RF fingerprinting is one of the most commonly used techniques for localization, deploying it in a ubiquitous manner requires addressing the challenge of supporting a large number of heterogeneous devices and their variations. We present QHFP...
A Hybrid Quantum-Classical CFD Methodology with Benchmark HHL Solutions
L. Lapworth·Jun 1, 2022
There has been significant progress in the development of quantum algorithms for solving linear systems of equations with a growing body of applications to Computational Fluid Dynamics (CFD) and CFD-like problems. This work extends previous work by de...
Design and Simulation of an Autonomous Quantum Flying Robot Vehicle: An IBM Quantum Experience
Sudev Pradhan, Anshuman Padhi, B. Behera·Jun 1, 2022
The application of quantum computation and information in robotics has caught the attention of researchers off late. The field of robotics has always put its effort on the minimization of the space occupied by the robot, and on making the robot `smar...
Hard superconducting gap in germanium
A. Tosato, V. Levajac, Ji-Yin Wang +9 more·Jun 1, 2022
The co-integration of spin, superconducting, and topological systems is emerging as an exciting pathway for scalable and high-fidelity quantum information technology. High-mobility planar germanium is a front-runner semiconductor for building quantum...
Perspective on the Current State-of-the-Art of Quantum Computing for Drug Discovery Applications
N. S. Blunt, Joan Camps, O. Crawford +9 more·Jun 1, 2022
Computational chemistry is an essential tool in the pharmaceutical industry. Quantum computing is a fast evolving technology that promises to completely shift the computational capabilities in many areas of chemical research by bringing into reach cu...
Semiconductor Defect Detection by Hybrid Classical-Quantum Deep Learning
Yuanfu Yang, Min Sun·Jun 1, 2022
With the rapid development of artificial intelligence and autonomous driving technology, the demand for semiconductors is projected to rise substantially. However, the massive expansion of semiconductor manufacturing and the development of new techno...
Quantum relaxed row and column iteration methods based on block-encoding
Xiao-qi Liu, Jing Wang, Ming Li +3 more·Jun 1, 2022
Iteration method is commonly used in solving linear systems of equations. We present quantum algorithms for the relaxed row and column iteration methods by constructing unitary matrices in the iterative processes, which generalize row and column iter...