Papers
Live trends in quantum computing research, updated daily from arXiv.
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15,531 papers in 12 months (-3% vs prior quarter)
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Simple, Reliable, and Noise-Resilient Continuous-Variable Quantum State Tomography with Convex Optimization
Ingrid Strandberg·Feb 23, 2022
Precise reconstruction of unknown quantum states from measurement data, a process commonly called quantum state tomography, is a crucial component in the development of quantum information processing technologies. Many different tomography methods hav...
Completely Quantum Neural Networks
Steve Abel, J. C. Criado, M. Spannowsky·Feb 23, 2022
Artificial neural networks are at the heart of modern deep learning algorithms. We describe how to embed and train a general neural network in a quantum annealer without introducing any classical el-ement in training. To implement the network on a sta...
A gentle introduction to Quantum Natural Language Processing
Shervin Le Du, Senaida Hernández-Santana, G. Scarpa·Feb 23, 2022
The main goal of this master's thesis is to introduce Quantum Natural Language Processing (QNLP) in a way understandable by both the NLP engineer and the quantum computing practitioner. QNLP is a recent application of quantum computing that aims at r...
Performance of Planar Floquet Codes with Majorana-Based Qubits
A. Paetznick, Christina Knapp, Nicolas Delfosse +4 more·Feb 23, 2022
Quantum error correction is crucial for any quantum computing platform to achieve truly scalable quantum computation. The surface code and its variants have been considered the most promising quantum error correction scheme due to their high threshol...
Optimal (controlled) quantum state preparation and improved unitary synthesis by quantum circuits with any number of ancillary qubits
Pei Yuan, Shengyu Zhang·Feb 23, 2022
<jats:p>As a cornerstone for many quantum linear algebraic and quantum machine learning algorithms, controlled quantum state preparation (CQSP) aims to provide the transformation of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow c...
A Modified MWPM Decoding Algorithm for Quantum Surface Codes Over Depolarizing Channels
Yaping Yuan, Chung-Chin Lu·Feb 23, 2022
A quantum surface code is a quantum topological stabilizer code whose stabilizers and qubits are geometrically related. Due to their special structures, surface codes have great potential to be implemented in large-scale quantum computing systems. In...
A QUBO formulation for the Tree Containment problem
Michael J. Dinneen, Pankaj S. Ghodla, S. Linz·Feb 22, 2022
Phylogenetic (evolutionary) trees and networks are leaf-labeled graphs that are widely used to represent the evolutionary relationships between entities such as species, languages, cancer cells, and viruses. To reconstruct and analyze phylogenetic ne...
Tensor-network discriminator architecture for classification of quantum data on quantum computers
M. Wall, P. Titum, G. Quiroz +2 more·Feb 22, 2022
We demonstrate the use of matrix product state (MPS) models for discriminating quantum data on quantum computers using holographic algorithms, focusing on classifying a translationally invariant quantum state based on $L$ qubits of quantum data extra...
Quantum walk in a reinforced free-energy landscape: Quantum annealing with reinforcement
A. Ramezanpour·Feb 22, 2022
Providing an optimal path to a quantum annealing algorithm is key to finding good approximate solutions to computationally hard optimization problems. Reinforcement is one of the strategies that can be used to circumvent the exponentially small energy...
Automatic Test Pattern Generation for Robust Quantum Circuit Testing
Kean Chen, M. Ying·Feb 22, 2022
Quantum circuit testing is essential for detecting potential faults in realistic quantum devices, while the testing process itself also suffers from the inexactness and unreliability of quantum operations. This article alleviates the issue by proposi...
Applying Grover's Algorithm to Hash Functions: A Software Perspective
Richard Preston·Feb 22, 2022
Quantum software frameworks provide software engineers with the tools to study quantum algorithms as applied to practical problems. We implement classical hash functions MD5, SHA-1, SHA-2, and SHA-3 as quantum oracles to study the computational resou...
Universal Classical Optical Computing Inspired by Quantum Information Process
Yifan Sun, Qian Li, Ling‐Jun Kong +2 more·Feb 22, 2022
Quantum computing has attracted much attention in recent decades, since it is believed to solve certain problems substantially faster than traditional computing methods. Theoretically, such an advance can be obtained by networks of the quantum operat...
An LLVM-based C++ Compiler Toolchain for Variational Hybrid Quantum-Classical Algorithms and Quantum Accelerators
Pradnya Khalate, Xin-Chuan Wu, S. Premaratne +6 more·Feb 22, 2022
Variational algorithms are a representative class of quantum computing workloads that combine quantum and classical computing. This paper presents an LLVM-based C++ compiler toolchain to efficiently execute variational hybrid quantum-classical algori...
A Framework for Distributed Quantum Queries in the CONGEST Model
Joran van Apeldoorn, Tijn de Vos·Feb 22, 2022
The Quantum CONGEST model is a variant of the CONGEST model, where messages consist of O(log(n)) qubits. In this paper, we give a general framework for implementing quantum query algorithms efficiently in a Quantum CONGEST network, using the concept ...
Improved Variational Quantum Eigensolver Via Quasidynamical Evolution
M. Jattana, F. Jin, H. Raedt +1 more·Feb 21, 2022
The variational quantum eigensolver (VQE) is a hybrid quantum-classical algorithm designed for current and near-term quantum devices. Despite its initial success, there is a lack of understanding involving several of its key aspects. There are proble...
Towards Quantum Gates with Wide Operating Margins
R. Epstein·Feb 21, 2022
Scaling up quantum computing hardware is hindered by the narrow operating margins of current quantum components. Here, we introduce a composite qubit and gate scheme that achieves wide margins by use of transistor-like nonlinearities to suppress the ...
Probing quantum devices with radio-frequency reflectometry
F. Vigneau, F. Fedele, A. Chatterjee +5 more·Feb 21, 2022
Many important phenomena in quantum devices are dynamic, meaning that they cannot be studied using time-averaged measurements alone. Experiments that measure such transient effects are collectively known as fast readout. One of the most useful techni...
Ancilla-free continuous-variable SWAP test
Tyler J. Volkoff, Yiğit Subaşı·Feb 20, 2022
We propose a continuous-variable (CV) SWAP test that requires no ancilla register, thereby generalizing the ancilla-free SWAP test for qubits. In this ancilla-free CV SWAP test, the computational basis measurement is replaced by photon number-resolvi...
Quantum Computing of Schwarzschild-de Sitter Black Holes and Kantowski-Sachs Cosmology
Amy Joseph, Tristen White, V. Chandra +1 more·Feb 20, 2022
The quantum mechanics of Schwarzschild-de Sitter black holes is of great recent interest because of their peculiar thermodynamic properties as well as their realization in modern dark energy cosmology which indicates the presence of a small positive ...
Quantum Circuits for the Preparation of Spin Eigenfunctions on Quantum Computers
A. Carbone, D. Galli, M. Motta +1 more·Feb 19, 2022
The application of quantum algorithms to the study of many-particle quantum systems requires the ability to prepare wave functions that are relevant in the behavior of the system under study. Hamiltonian symmetries are important instruments used to c...