Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Dissipative entanglement generation between two driven qubits in circuit quantum electrodynamics
Sebasti'an Luciano Gallardo, D. Domínguez, M. J. S'anchez·Nov 16, 2021
An entangled state generation protocol for a system of two qubits driven with an ac signal and coupled through a resonator is introduced. We explain the mechanism of entanglement generation in terms of an interplay between unitary Landau-Zener-Stücke...
Fidelity-Guaranteed Entanglement Routing in Quantum Networks
Jian Li, Ming-jian Wang, Kaiping Xue +4 more·Nov 15, 2021
Entanglement routing establishes remote entanglement connection between two arbitrary nodes, which is one of the most important functions in quantum networks. The existing routing mechanisms mainly improve the robustness and throughput facing the fai...
Robust Preparation of Wigner-Negative States with Optimized SNAP-Displacement Sequences
M. Kudra, Mikael Kervinen, Ingrid Strandberg +10 more·Nov 15, 2021
Hosting non-classical states of light in three-dimensional microwave cavities has emerged as a promising paradigm for continuous-variable quantum information processing. Here we experimentally demonstrate high-fidelity generation of a range of Wigner...
A Quantum Natural Language Processing Approach to Musical Intelligence
E. Miranda, Richie Yeung, A. Pearson +2 more·Nov 10, 2021
There has been tremendous progress in Artificial Intelligence (AI) for music, in particular for musical composition and access to large databases for commercialisation through the Internet. We are interested in further advancing this field, focusing ...
Multiqubit entanglement and quantum phase gates with epsilon-near-zero plasmonic waveguides
Ying Li, C. Argyropoulos·Nov 9, 2021
Multiqubit entanglement is extremely important to perform truly secure quantum optical communication and computing operations. However, the efficient generation of long-range entanglement over extended time periods between multiple qubits randomly di...
Demonstration of long-range correlations via susceptibility measurements in a one-dimensional superconducting Josephson spin chain
D. Tennant, X. Dai, Antonio J. Martinez +20 more·Nov 8, 2021
Spin chains have long been considered an effective medium for long-range interactions, entanglement generation, and quantum state transfer. In this work, we explore the properties of a spin chain implemented with superconducting flux circuits, design...
Quantum machine learning for chemistry and physics.
M. Sajjan, Junxu Li, R. Selvarajan +5 more·Nov 1, 2021
Machine learning (ML) has emerged as a formidable force for identifying hidden but pertinent patterns within a given data set with the objective of subsequent generation of automated predictive behavior. In recent years, it is safe to conclude that M...
Redefining the Quantum Supremacy Baseline With a New Generation Sunway Supercomputer
Xin Liu, Chu Guo, Yong Liu +11 more·Nov 1, 2021
A major milestone in the era of noisy intermediate scale quantum computers is \textit{quantum supremacy} [Nature \textbf{574}, 505 (2019)] claimed on the Sycamore quantum processor of $53$ qubits, which can perform a random circuit sampling task with...
Small-world complex network generation on a digital quantum processor
E. Jones, Logan E. Hillberry, Matthew T. Jones +9 more·Oct 30, 2021
Quantum cellular automata (QCA) evolve qubits in a quantum circuit depending only on the states of their neighborhoods and model how rich physical complexity can emerge from a simple set of underlying dynamical rules. The inability of classical compu...
Holographic spacetime, black holes and quantum error correcting codes: a review
Tanay Kibe, Prabha Mandayam, A. Mukhopadhyay·Oct 27, 2021
This article reviews the progress in our understanding of the reconstruction of the bulk spacetime in the holographic correspondence from the dual field theory including an account of how these developments have led to the reproduction of the Page cu...
Fragmented imaginary-time evolution for early-stage quantum signal processors
T. L. Silva, M. M. Taddei, S. Carrazza +1 more·Oct 25, 2021
Simulating quantum imaginary-time evolution (QITE) is a significant promise of quantum computation. However, the known algorithms are either probabilistic (repeat until success) with unpractically small success probabilities or coherent (quantum ampl...
Efficient Decoding of Surface Code Syndromes for Error Correction in Quantum Computing
Debasmita Bhoumik, Pinaki Sen, Ritajit Majumdar +3 more·Oct 21, 2021
Errors in surface code have typically been decoded by Minimum Weight Perfect Matching (MWPM) based method. Recently, neural-network-based Machine Learning (ML) techniques have been employed for this purpose. Here we propose a two-level (low and high)...
Detecting Entanglement-Generating Circuits in Cloud-Based Quantum Computing
J. Seong, J. Bae·Oct 20, 2021
Entanglement, a direct consequence of elementary quantum gates such as controlled-NOT or Toffoli gates, is a key resource that leads to quantum advantages. In this work, we establish the framework of certifying entanglement generation in cloud-based ...
FPGA-based electronic system for the control and readout of superconducting quantum processors.
Yuchen Yang, Z. Shen, Xing Zhu +6 more·Oct 15, 2021
Electronic systems for qubit control and measurement serve as a bridge between quantum programming language and quantum information processors. With the rapid development of superconducting quantum circuit technology, synchronization in a large-scale...
Automatic generation of Grover quantum oracles for arbitrary data structures
Raphael Seidel, Colin Kai-Uwe Becker, Sebastian Bock +3 more·Oct 14, 2021
The steadily growing research interest in quantum computing—together with the accompanying technological advances in the realization of quantum hardware—fuels the development of meaningful real-world applications, as well as implementations for well-...
Nearly Optimal Quantum Algorithm for Generating the Ground State of a Free Quantum Field Theory
Mohsen Bagherimehrab, Y. Sanders, D. Berry +2 more·Oct 12, 2021
We devise a quasilinear quantum algorithm for generating an approximation for the ground state of a quantum field theory (QFT). Our quantum algorithm delivers a super-quadratic speedup over the state-of-the-art quantum algorithm for ground-state gene...
Lossy compression of statistical data using quantum annealer
B. Yoon, Nga T. T. Nguyen, Chia-Cheng Chang +1 more·Oct 5, 2021
We present a new lossy compression algorithm for statistical floating-point data through a representation learning with binary variables. The algorithm finds a set of basis vectors and their binary coefficients that precisely reconstruct the original...
Coarse-grained intermolecular interactions on quantum processors
L. W. Anderson, M. Kiffner, P. Barkoutsos +3 more·Oct 3, 2021
Variational quantum algorithms (VQAs) are increasingly being applied in simulations of strongly-bound (covalently bonded) systems using full molecular orbital basis representations. The application of quantum computers to the weakly-bound intermolecu...
Adapting Quantum Approximation Optimization Algorithm (QAOA) for Unit Commitment
S. Koretsky, P. Gokhale, Jonathan M. Baker +8 more·Oct 1, 2021
In the present Noisy Intermediate-Scale Quantum (NISQ), hybrid algorithms that leverage classical resources to reduce quantum costs are particularly appealing. We formulate and apply such a hybrid quantum-classical algorithm to a power system optimiz...
Pseudo Quantum Random Number Generator with Quantum Permutation Pad
Randy Kuang, Dafu Lou, Alex He +2 more·Oct 1, 2021
Cryptographic random number generation is critical for any quantum-safe encryption. Based on the natural uncertainty of some quantum processes, a variety of quantum random number generators, or QRNGs, have been created with physical quantum processes...