Papers
Live trends in quantum computing research, updated daily from arXiv.
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13,509 papers in 12 months (-19% vs prior quarter)
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Pauli channels can be estimated from syndrome measurements in quantum error correction
Thomas Wagner, H. Kampermann, D. Bruß +1 more·Jul 29, 2021
The performance of quantum error correction can be significantly improved if detailed information about the noise is available, allowing to optimize both codes and decoders. It has been proposed to estimate error rates from the syndrome measurements ...
Quantum state preparation protocol for encoding classical data into the amplitudes of a quantum information processing register's wave function
S. Ashhab·Jul 29, 2021
We present a protocol for encoding N real numbers stored in N memory registers into the amplitudes of the quantum superposition that describes the state of log2N qubits. This task is one of the main steps in quantum machine learning algorithms applie...
Improved quantum error correction using soft information
C. Pattison, M. Beverland, M. Silva +1 more·Jul 28, 2021
The typical model for measurement noise in quantum error correction is to randomly flip the binary measurement outcome. In experiments, measurements yield much richer information - e.g., continuous current values, discrete photon counts - which is th...
Trade off-free entanglement stabilization in a superconducting qutrit-qubit system
Tristan Brown, Emery Doucet, D. Ristè +7 more·Jul 28, 2021
Quantum reservoir engineering is a powerful framework for autonomous quantum state preparation and error correction. However, traditional approaches to reservoir engineering are hindered by unavoidable coherent leakage out of the target state, which ...
Strong Coupling Optomechanics Mediated by a Qubit in the Dispersive Regime
Ahmad Shafiei Aporvari, D. Vitali·Jul 27, 2021
Cavity optomechanics represents a flexible platform for the implementation of quantum technologies, useful in particular for the realization of quantum interfaces, quantum sensors and quantum information processing. However, the dispersive, radiation...
Clustering and enhanced classification using a hybrid quantum autoencoder
Maiyuren Srikumar, C. Hill, L. Hollenberg·Jul 26, 2021
Quantum machine learning (QML) is a rapidly growing area of research at the intersection of classical machine learning and quantum information theory. One area of considerable interest is the use of QML to learn information contained within quantum s...
Endless fun in high dimensions—A quantum card game
Lea Kopf, M. Hiekkamäki, S. Prabhakar +1 more·Jul 26, 2021
Quantum technologies enable new ways to distribute and process information. The enormous progress over the recent decades has led to an urgent need for new educational programs to train professionals to work in this field. Here, we present a card gam...
Experimental demonstration of continuous quantum error correction
W. Livingston, M. Blok, E. Flurin +3 more·Jul 23, 2021
The storage and processing of quantum information are susceptible to external noise, resulting in computational errors. A powerful method to suppress these effects is quantum error correction. Typically, quantum error correction is executed in discre...
Cross-platform comparison of arbitrary quantum states
Ze-Pei Cian, D. Zhu, C. Noel +14 more·Jul 23, 2021
As we approach the era of quantum advantage, when quantum computers (QCs) can outperform any classical computer on particular tasks, there remains the difficult challenge of how to validate their performance. While algorithmic success can be easily v...
RGB image classification with quantum convolutional ansatz
Yu Jing, Yang Yang, Chonghang Wu +4 more·Jul 23, 2021
With the rapid growth of qubit numbers and coherence times in quantum hardware technology, implementing shallow neural networks on the so-called Noisy Intermediate-Scale Quantum (NISQ) devices has attracted a lot of interest. Many quantum (convolutio...
Certification of quantum states with hidden structure of their bitstrings
O. M. Sotnikov, I. A. Iakovlev, A. Iliasov +3 more·Jul 21, 2021
The rapid development of quantum computing technologies already made it possible to manipulate a collective state of several dozens of qubits, which poses a strong demand on efficient methods for characterization and verification of large-scale quant...
Single‐Photon Nonreciprocity with an Integrated Magneto‐Optical Isolator
S. Ren, Wei Yan, Lantian Feng +10 more·Jul 20, 2021
Nonreciprocal photonic devices are essential components of classical optical information processing. It is interesting and important to investigate their feasibility in the quantum world. In this work, a single‐photon non‐reciprocal dynamical transmi...
Quantum Noise Sensing by Generating Fake Noise
Paolo Braccia, L. Banchi, F. Caruso·Jul 19, 2021
Noisy-Intermediate-Scale-Quantum (NISQ) devices are nowadays starting to become available to the final user, hence potentially allowing to show the quantum speedups predicted by the quantum information theory. However, before implementing any quantum...
Best Subset Selection: Statistical Computing Meets Quantum Computing.
Wenxuan Zhong, Y. Ke, Ye Wang +3 more·Jul 18, 2021
With the rapid development of quantum computers, quantum algorithms have been studied extensively. However, quantum algorithms tackling statistical problems are still lacking. In this paper, we propose a novel non-oracular quantum adaptive search (QA...
Floquet prethermal phase protected by U(1) symmetry on a superconducting quantum processor
C. Ying, Qi Guo, Shaowei Li +22 more·Jul 15, 2021
Periodically driven systems, or Floquet systems, exhibit many novel dynamics and interesting outof-equilibrium phases of matter. Those phases arising with the quantum systems’ symmetries, such as global U(1) symmetry, can even show dynamical stabilit...
Designing Kerr Interactions for Quantum Information Processing via Counterrotating Terms of Asymmetric Josephson-Junction Loops
Timo Hillmann, Fernando Quijandr'ia·Jul 14, 2021
Continuous-variable systems realized in high-coherence microwave cavities are a promising platform for quantum information processing. While strong dynamic nonlinear interactions are desired to implement fast and high-fidelity quantum operations, sta...
Exciton-polariton dynamics of the single site-controlled quantum dot-nanocavity in the coexisting strong-weak coupling regime
Jiahui Huang, Wei Liu, M. Sarihan +6 more·Jul 14, 2021
Deterministic positioning single site-controlled high symmetric InGaAs quantum dots (QDs) in (111)B-oriented GaAs photonic crystal cavities with nanometer-scale accuracy provides an idea component for building integrated quantum photonic circuits. Ho...
Implementable hybrid quantum ant colony optimization algorithm
Mikel Garcia de Andoin, J. Echanobe·Jul 8, 2021
We propose a new hybrid quantum algorithm based on the classical Ant Colony Optimization algorithm to produce approximate solutions for NP-hard problems, in particular optimization problems. First, we discuss some previously proposed Quantum Ant Colo...
Optical reconstruction of the collective density matrix of a qutrit
Marek Kopciuch, S. Pustelny·Jul 8, 2021
Reconstruction of a quantum state is of prime importance for quantum-information science. Specifically, means of efficient determination of a state of atoms of room-temperature vapor may enable applications in quantum computations and cryptography. T...
Identification of Desired Pixels in an Image Using Grover's Quantum Search Algorithm
B. Iqbal, Harkirat Singh·Jul 7, 2021
Quantum Information Theory promises to speed up computation so is observed in real quantum computers as proved to its classical counterpart. This revolutionizes every field linked directly or indirectly with computation. Grover algorithm in quantum i...