Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Hidden orders and phase transitions for the fully packed quantum loop model on the triangular lattice
Xiaoxue Ran, Zheng Yan, Yancheng Wang +5 more·May 9, 2022
By using the sweeping cluster quantum Monte Carlo algorithm, the authors reveal the complete ground-state phase diagram of the triangular-lattice fully packed quantum loop model. They discover a hidden vison plaquette phase between the known lattice ...
On recovering block cipher secret keys in the cold boot attack setting
Gustavo Banegas, Ricardo Villanueva-Polanco·May 9, 2022
This paper presents a general strategy to recover a block cipher secret key in the cold boot attack setting. More precisely, we propose a key-recovery method that combines key enumeration algorithms and Grover’s quantum algorithm to recover a block c...
Robust, fast and high-fidelity composite single-qubit gates for superconducting transmon qubits
Hristo G. Tonchev, B. Torosov, N. Vitanov·May 9, 2022
We introduce a novel quantum control method for superconducting transmon qubits that substantially outperforms conventional techniques in precision and robustness against coherent errors. Our approach leverages composite pulses (CP) to effectively mi...
Towards Feature Selection for Ranking and Classification Exploiting Quantum Annealers
Maurizio Ferrari Dacrema, Fabio Moroni, Riccardo Nembrini +3 more·May 9, 2022
Feature selection is a common step in many ranking, classification, or prediction tasks and serves many purposes. By removing redundant or noisy features, the accuracy of ranking or classification can be improved and the computational cost of the sub...
Supply chain logistics with quantum and classical annealing algorithms
Sean J. Weinberg, F. Sanches, T. Ide +2 more·May 9, 2022
Noisy intermediate-scale quantum (NISQ) hardware is almost universally incompatible with full-scale optimization problems of practical importance which can have many variables and unwieldy objective functions. As a consequence, there is a growing bod...
Are Quantum Computers Practical Yet? A Case for Feature Selection in Recommender Systems using Tensor Networks
Artyom Nikitin, A. Chertkov, R. Ballester-Ripoll +2 more·May 9, 2022
Collaborative filtering models generally perform better than content-based filtering models and do not require careful feature engineering. However, in the cold-start scenario collaborative information may be scarce or even unavailable, whereas the c...
Pre-Distribution of Entanglements in Quantum Networks
Mohammad Ghaderibaneh, Himanshu Gupta, C. Ramakrishnan +1 more·May 9, 2022
Quantum network communication is challenging, as the No-Cloning theorem in quantum regime makes many classical techniques inapplicable. For long-distance communication, the only viable approach is teleportation of quantum states, which requires a pri...
Quantum neural network autoencoder and classifier applied to an industrial case study
Stefano Mangini, A. Marruzzo, M. Piantanida +3 more·May 9, 2022
Quantum computing technologies are in the process of moving from academic research to real industrial applications, with the first hints of quantum advantage demonstrated in recent months. In these early practical uses of quantum computers, it is rel...
Co-Designed Architectures for Modular Superconducting Quantum Computers
Evan McKinney, M. Xia, Chao Zhou +3 more·May 9, 2022
Noisy, Intermediate Scale Quantum (NISQ) computers have reached the point where they can show the potential for quantum advantage over classical computing. Unfortunately, NISQ machines introduce sufficient noise that even for moderate size quantum ci...
Pauli String Partitioning Algorithm with the Ising Model for Simultaneous Measurements
·May 9, 2022
We propose an efficient algorithm for partitioning Pauli strings into subgroups, which can be simultaneously measured in a single quantum circuit. Our partitioning algorithm drastically reduces the total number of measurements in a variational quantu...
Sketching the Best Approximate Quantum Compiling Problem
Liam Madden, A. Akhriev, Andrea Simonetto·May 9, 2022
This paper considers the problem of quantum compilation from an optimization perspective by fixing a circuit structure of CNOTs and rotation gates then optimizing over the rotation angles. We solve the optimization problem classically and consider al...
Variational quantum attacks threaten advanced encryption standard based symmetric cryptography
Zeguo Wang, Shijie Wei, G. Long +1 more·May 7, 2022
We propose a variational quantum attack algorithm (VQAA) for classical advanced encryption standard (AES)-like symmetric cryptography, as exemplified by the simplified-data encryption standard (S-DES). In the VQAA, the known ciphertext is encoded as ...
A Gradient‐Cost Multiobjective Alternate Framework for Variational Quantum Eigensolver with Variable Ansatz
Ze-Tong Li, Fan-Xu Meng, Han-qin Zeng +3 more·May 6, 2022
Variational quantum eigensolver (VQE), aiming at determining the ground state energy of a quantum system described by a Hamiltonian on noisy intermediate scale quantum (NISQ) devices. However, the accuracy and trainability of the current VQE algorith...
Variational quantum algorithm for unconstrained black box binary optimization: Application to feature selection
Christa Zoufal, R. Mishmash, Nitin Sharma +6 more·May 6, 2022
We introduce a variational quantum algorithm to solve unconstrained black box binary optimization problems, i.e., problems in which the objective function is given as black box. This is in contrast to the typical setting of quantum algorithms for opt...
Coupled dynamics of spin qubits in optical dipole microtraps: Application to the error analysis of a Rydberg-blockade gate
L. Gerasimov, R. Yusupov, A. D. Moiseevsky +6 more·May 6, 2022
Single atoms in dipole microtraps or optical tweezers have recently become a promising platform for quantum computing and simulation. Here we report a detailed theoretical analysis of the physics underlying an implementation of a Rydberg two-qubit ga...
Analysis of Multiple Overlapping Paths algorithms for Secure Key Exchange in Large-Scale Quantum Networks
M. Stepniak, J. Mielczarek·May 6, 2022
Quantum networks open the way to an unprecedented level of communication security. However, due to physical limitations on the distances of quantum links, current implementations of quantum networks are unavoidably equipped with trusted nodes. As a c...
Optimal compression of quantum many-body time evolution operators into brickwall circuits
M. Tepaske, D. Hahn, D. J. Luitz·May 6, 2022
Near term quantum computers suffer from a degree of decoherence which is prohibitive for high fidelity simulations with deep circuits. An economical use of circuit depth is therefore paramount. For digital quantum simulation of quantum many-body syst...
Tunable directional photon scattering from a pair of superconducting qubits
E. Redchenko, A. Poshakinskiy, R. Sett +3 more·May 6, 2022
The ability to control the direction of scattered light is crucial to provide flexibility and scalability for a wide range of on-chip applications, such as integrated photonics, quantum information processing, and nonlinear optics. Tunable directiona...
Comparison between the Iterative Local Search and Exhaustive Search methods applied to QAOA in Max-Cut and Ising Spin Model problems
Brian García Sarmina·May 6, 2022
A comparison is made between Exhaustive Search (ES) and Iterative Local Search (ILS). Such comparison was made using the Quantum Approximation Optimization Algorithm (QAOA). QAOA has been extensively researched due to its this potential to be impleme...
An exact quantum order finding algorithm and its applications
Muhammad Imran·May 6, 2022
We present an efficient exact quantum algorithm for order finding problem when a multiple $m$ of the order $r$ is known. The algorithm consists of two main ingredients. The first ingredient is the exact quantum Fourier transform proposed by Mosca and...