Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Adaptive measurement filter: efficient strategy for optimal estimation of quantum Markov chains
Alfred Godley, M. Guţă·Apr 19, 2022
Continuous-time measurements are instrumental for a multitude of tasks in quantum engineering and quantum control, including the estimation of dynamical parameters of open quantum systems monitored through the environment. However, such measurements ...
Electronic DC-SQUID Emulator
J. Cochran, IV C.S.Guzmán, E. Stiers +1 more·Apr 19, 2022
Pulsed readout of Direct Current (DC) Superconducting Quantum Interference Device (SQUID) is crucial for experiments which need to be performed at millikelvin temperatures, such as the readout of superconducting and electron spin based qubits. Pulsed...
Two-level quantum walkers on directed graphs. II. Application to quantum random access memory
Ryo Asaka, K. Sakai, Ryoko Yahagi·Apr 19, 2022
This is the second paper in a series of two. Using a multi-particle continuous-time quantum walk with two internal states, which has been formulated in the first paper (arXiv:2112.08119), we physically implement a quantum random access memory (qRAM)....
Training Variational Quantum Circuits with CoVaR: Covariance Root Finding with Classical Shadows
Gregory Boyd, Bálint Koczor·Apr 18, 2022
Exploiting near-term quantum computers and achieving practical value is a considerable and exciting challenge. Most prominent candidates as variational algorithms typically aim to find the ground state of a Hamiltonian by minimising a single classica...
Numerical computation of the equilibrium-reduced density matrix for strongly coupled open quantum systems
Tyler Chen, Yu-Chen Cheng·Apr 18, 2022
We describe a numerical algorithm for approximating the equilibrium-reduced density matrix and the effective (mean force) Hamiltonian for a set of system spins coupled strongly to a set of bath spins when the total system (system + bath) is held in c...
Quantum Many-Body Systems in Thermal Equilibrium
Álvaro M. Alhambra·Apr 18, 2022
The thermal or equilibrium ensemble is one of the most ubiquitous states of matter. For models comprised of many locally interacting quantum particles, it describes a wide range of physical situations, relevant to condensed matter physics, high energ...
Near-Optimal Fidelity in Quantum Circuits through Incorporating Efficient Real-time Error Based Heuristics in Compiler Mappings
Md. Nurul Muttakin·Apr 18, 2022
To run a quantum program in the real device, the compiler maps the logical qubits to physical qubits. This is the most crucial step of compiling a quantum circuit. Because the fidelity of a quantum circuit depends heavily on this mapping process. How...
Universal terminal for mobile edge-quantum computing
M. Khazali·Apr 18, 2022
To bring the quantum computing capacities to the personal edge devices, the optimum approach is to have simple non-error corrected personal devices that offload the computational tasks to scalable quantum computers via edge servers with cryogenic com...
Optimizing Tensor Network Contraction Using Reinforcement Learning
E. Meirom, Haggai Maron, Shie Mannor +1 more·Apr 18, 2022
Quantum Computing (QC) stands to revolutionize computing, but is currently still limited. To develop and test quantum algorithms today, quantum circuits are often simulated on classical computers. Simulating a complex quantum circuit requires computi...
PiouCrypt: Decentralized Lattice-based Method for Visual Symmetric Cryptography
Navid Abapour, M. Ebadpour·Apr 17, 2022
In recent years, establishing secure visual communications has turned into one of the essential problems for security engineers and researchers. However, only limited novel solutions are provided for image encryption, and limiting the visual cryptogr...
Reducing the Depth of Quantum FLT-Based Inversion Circuit
Harashta Tatimma Larasati, D. Putranto, Rini Wisnu Wardhani +1 more·Apr 16, 2022
Works on quantum computing and cryptanalysis has increased significantly in the past few years. Various constructions of quantum arithmetic circuits, as one of the essential components in the field, has also been proposed. However, there has only bee...
Establishing trust in quantum computations
Timothy Proctor, Stefan Seritan, Erik Nielsen +4 more·Apr 15, 2022
Quantum computing hardware has grown sufficiently complex that it often can no longer be simulated by classical computers, but its computational power remains limited by errors. These errors corrupt the results of quantum algorithms, and it is no lon...
Quantum Control of Hole Spin Qubits in Double Quantum Dots
D. Fernández-Fernández, Y. Ban, G. Platero·Apr 15, 2022
Hole spin qubits in semiconductor quantum dots (QDs) are promising candidates for quantum information processing due to their weak hyperfine coupling to nuclear spins, and to the strong spin-orbit coupling which allows for rapid operation time. We pr...
Accelerating Noisy VQE Optimization with Gaussian Processes
Juliane Mueller, W. Lavrijsen, Costin Iancu +1 more·Apr 15, 2022
Hybrid variational quantum algorithms, which combine a classical optimizer with evaluations on a quantum chip, are the most promising candidates to show quantum advantage on current noisy, intermediate-scale quantum (NISQ) devices. The classical opti...
A formally certified end-to-end implementation of Shor’s factorization algorithm
Yuxiang Peng, Kesha Hietala, Runzhou Tao +4 more·Apr 14, 2022
Significance While hardware errors have garnered significant attention as the major obstacle to quantum computing, the error due to human factors in the implementation is less recognized. This paper identifies human programming errors as another impo...
Character Varieties and Algebraic Surfaces for the Topology of Quantum Computing
M. Planat, Marcelo M. Amaral, F. Fang +3 more·Apr 14, 2022
It is shown that the representation theory of some finitely presented groups thanks to their SL2(C) character variety is related to algebraic surfaces. We make use of the Enriques–Kodaira classification of algebraic surfaces and related topological t...
Experimental quantum state discrimination using the optimal fixed rate of inconclusive outcomes strategy
Santiago G'omez, E. G'omez, O. Jim'enez +3 more·Apr 14, 2022
The problem of non-orthogonal state discrimination underlies crucial quantum information tasks, such as cryptography and computing protocols. Therefore, it is decisive to find optimal scenarios for discrimination among quantum states. We experimental...
Tight Bounds for Quantum State Certification with Incoherent Measurements
Sitan Chen, Brice Huang, Jungshian Li +1 more·Apr 14, 2022
We consider the problem of quantum state certification, where we are given the description of a mixed state $\sigma\in\mathbb{C}^{d\times d},n$ copies of a mixed state $\rho\in\mathbb{C}^{d\times d}$, and $\varepsilon\gt 0$, and we are asked to deter...
Efficient and practical quantum compiler towards multi-qubit systems with deep reinforcement learning
Qiuhao Chen, Yuxuan Du, Yuliang Jiao +3 more·Apr 14, 2022
Efficient quantum compiling is essential for complex quantum algorithms realization. The Solovay–Kitaev (S–K) theorem offers a theoretical lower bound on the required operations for approaching any unitary operator. However, it is still an open quest...
NEQRX: Efficient Quantum Image Encryption with Reduced Circuit Complexity
Rakesh Saini, B. K. Behera, S. Al-kuwari +1 more·Apr 14, 2022
Cryptography plays an important role in ensuring data security and authentication within information processing systems. As the prevalence of digital imagery continues to grow, safeguarding this form of data becomes increasingly crucial. However, exi...