Papers
Live trends in quantum computing research, updated daily from arXiv.
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Quantum-enhanced symmetric cryptanalysis for S-AES
A. Moiseevskiy·Apr 11, 2023
Advanced Encryption Standard is one of the most widely used and important symmetric ciphers for today. It well known, that it can be subjected to the quantum Grover's attack that twice reduces its key strength. But full AES attack requires hundreds o...
Sublinear Scaling in Non-Markovian Open Quantum Systems Simulations
M. Cygorek, Jonathan Keeling, B. Lovett +1 more·Apr 11, 2023
While several numerical techniques are available for predicting the dynamics of non-Markovian open quantum systems, most struggle with simulations for very long memory and propagation times, e.g., due to superlinear scaling with the number of time st...
Multinucleon structure and dynamics via quantum computing
W. Du, J. Vary·Apr 10, 2023
We propose a framework for computing the structure and dynamics for second-quantized many-nucleon Hamiltonians on quantum computers. We develop an oracle-based Hamiltonian input model that computes the many-nucleon states and nonzero Hamiltonian matr...
Operating with Quantum Integers: An Efficient 'Multiples of' Oracle
Javier Sanchez-Rivero, Daniel Talav'an, J. García-Alonso +2 more·Apr 10, 2023
Quantum algorithms are a very promising field. However, creating and manipulating these kind of algorithms is a very complex task, specially for software engineers used to work at higher abstraction levels. The work presented here is part of a broade...
Permutation invariant encodings for quantum machine learning with point cloud data
J. Heredge, C. Hill, L. Hollenberg +1 more·Apr 7, 2023
Quantum computing offers a potentially powerful new method for performing machine learning. However, several quantum machine learning techniques have been shown to exhibit poor generalisation as the number of qubits increases. We address this issue b...
Parallel circuit implementation of variational quantum algorithms
Michele Cattelan, S. Yarkoni, Wolfgang Lechner·Apr 6, 2023
We present a framework to split quantum circuits of variational quantum algorithms (VQAs) to allow for parallel training and execution to solve problems larger than the number of available qubits in a quantum device. We apply this method to combinato...
Quantum and Classical Spin-Network Algorithms for q-Deformed Kogut-Susskind Gauge Theories.
T. Zache, D. González-Cuadra, P. Zoller·Apr 5, 2023
Treating the infinite-dimensional Hilbert space of non-Abelian gauge theories is an outstanding challenge for classical and quantum simulations. Here, we employ q-deformed Kogut-Susskind lattice gauge theories, obtained by deforming the defining symm...
Entanglement Distillation Based on Polarization and Frequency Hyperentanglement
Dan Xu, Changjia Chen, B. Kirby +1 more·Apr 4, 2023
Entanglement distillation has many applications in quantum information processing and is an important tool for improving the quality and efficiency of quantum communication, cryptography, computing, and simulation. We propose an entanglement distilla...
Quantum Algorithms for Charged Particle Track Reconstruction in the LUXE Experiment
Arianna Crippa, L. Funcke, T. Hartung +8 more·Apr 4, 2023
The LUXE experiment is a new experiment in planning in Hamburg, which will study quantum electrodynamics at the strong-field frontier. LUXE intends to measure the positron production rate in this unprecedented regime using, among others, a silicon tr...
Simulating the quantum Fourier transform, Grover's algorithm, and the quantum counting algorithm with limited entanglement using tensor networks
Marcel Niedermeier, J. Lado, C. Flindt·Apr 4, 2023
Quantum algorithms reformulate computational problems as quantum evolutions in a large Hilbert space. Most quantum algorithms assume that the time evolution is perfectly unitary and that the full Hilbert space is available. However, in practice, the ...
Quantum Thermal State Preparation
Chi-Fang Chen, M. Kastoryano, F. Brandão +1 more·Mar 31, 2023
Preparing ground states and thermal states is essential for simulating quantum systems on quantum computers. Despite the hope for practical quantum advantage in quantum simulation, popular state preparation approaches have been challenged. Monte Carl...
Fault Tolerant Non-Clifford State Preparation for Arbitrary Rotations
Hyeongrak Choi, F. Chong, D. Englund +1 more·Mar 30, 2023
Quantum error correction is an essential component for practical quantum computing on noisy quantum hardware. However, logical operations on error-corrected qubits require a significant resource overhead, especially for high-precision and high-fideli...
Context-aware fidelity estimation
D. Debroy, É. Genois, J. Gross +6 more·Mar 30, 2023
We present Context Aware Fidelity Estimation (CAFE), a framework for benchmarking quantum operations that offers several practical advantages over existing methods such as Randomized Benchmarking (RB) and Cross-Entropy Benchmarking (XEB). In CAFE, a ...
Potential quantum advantage for simulation of fluid dynamics
Xiangyu Li, Xiaolong Yin, N. Wiebe +4 more·Mar 29, 2023
Numerical simulation of turbulent fluid dynamics needs to either parametrize turbulence—which introduces large uncertainties—or explicitly resolve the smallest scales—which is prohibitively expensive. Here, we provide evidence through analytic bounds...
Quantum Deep Hedging
El Amine Cherrat, S. Raj, Iordanis Kerenidis +12 more·Mar 29, 2023
Quantum machine learning has the potential for a transformative impact across industry sectors and in particular in finance. In our work we look at the problem of hedging where deep reinforcement learning offers a powerful framework for real markets....
Computation of Green's function by local variational quantum compilation
S. Kanasugi, S. Tsutsui, Yuya O. Nakagawa +3 more·Mar 28, 2023
Computation of the Green's function is crucial to study the properties of quantum many-body systems such as strongly correlated systems. Although the high-precision calculation of the Green's function is a notoriously challenging task on classical co...
Is there a Moore's law for quantum computing?
Olivier Ezratty·Mar 27, 2023
There is a common wisdom according to which many technologies can progress according to some exponential law like the empirical Moore's law that was validated for over half a century with the growth of transistors number in chipsets. As a still in th...
Interpolation-based decoding of folded variants of linearized and skew Reed–Solomon codes
Felicitas Hörmann, H. Bartz·Mar 27, 2023
The sum-rank metric is a hybrid between the Hamming metric and the rank metric and suitable for error correction in multishot network coding and distributed storage as well as for the design of quantum-resistant cryptosystems. In this work, we consid...
Stable computation of entanglement entropy for two-dimensional interacting fermion systems
Gaopei Pan, Yuan Da Liao, Weilun Jiang +3 more·Mar 25, 2023
There is no doubt that the information hidden in entanglement entropy (EE), for example, the $n$-th order R\'enyi EE, i.e., $S^{A}_n=\frac{1}{1-n}\ln \Tr (\rho_A^n)$ where $\rho_A=\mathrm{Tr}_{\overline{A}}\rho$ is the reduced density matrix, can be ...
Partially Fault-Tolerant Quantum Computing Architecture with Error-Corrected Clifford Gates and Space-Time Efficient Analog Rotations
Yutaro Akahoshi, Kazunori Maruyama, H. Oshima +2 more·Mar 23, 2023
Quantum computers are expected to bring drastic acceleration to several computing tasks against classical computers. Noisy intermediate-scale quantum (NISQ) devices, which have tens to hundreds of noisy physical qubits, are gradually becoming availab...