Papers
Live trends in quantum computing research, updated daily from arXiv.
Total Papers
28,891
This Month
551
Today
0
Research Volume
13,881 papers in 12 months (-10% vs prior quarter)
Research Focus Areas
Papers by research theme (12 months). Hover for details.
Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Optimize quantum simulation using a force-gradient integrator
Y. Zou, Yu-Jiao Bo, Ji-Chong Yang·Mar 10, 2021
Quantum simulation has shown great potential in many fields due to its powerful computational capabilities. However, the limited fidelity can lead to a severe limitation on the number of gate operations, which requires us to find optimized algorithms...
Quantum Algorithms in Cybernetics
Petar Nikolov·Mar 10, 2021
A new method for simulation of a binary homogeneous Markov process using a quantum computer was proposed. This new method allows using the distinguished properties of the quantum mechanical systems -- superposition, entanglement and probability calcu...
Fast Simulation of Bosonic Qubits via Gaussian Functions in Phase Space
J. Bourassa, N. Quesada, I. Tzitrin +6 more·Mar 9, 2021
Bosonic qubits are a promising route to building fault-tolerant quantum computers on a variety of physical platforms. Studying the performance of bosonic qubits under realistic gates and measurements is challenging with existing analytical and numeri...
A Quantum Algorithm for the Sensitivity Analysis of Business Risks
M. C. Braun, T. Decker, N. Hegemann +2 more·Mar 9, 2021
We present a novel use case for quantum computation: the sensitivity analysis for a risk model used at Deutsche B\"orse Group. Such an analysis is computationally too expensive to perform on classical computers. We show in detail how the risk model a...
NISQ Algorithm for Hamiltonian simulation via truncated Taylor series
J. Lau, T. Haug, L. Kwek +1 more·Mar 9, 2021
Simulating the dynamics of many-body quantum systems is believed to be one of the first fields that quantum computers can show a quantum advantage over classical computers. Noisy intermediate-scale quantum (NISQ) algorithms aim at effectively using ...
Hardware error correction for programmable photonics
S. Bandyopadhyay, R. Hamerly, D. Englund·Mar 8, 2021
Programmable photonic circuits of reconfigurable interferometers can be used to implement arbitrary operations on optical modes, facilitating a flexible platform for accelerating tasks in quantum simulation, signal processing, and artificial intellig...
Error Mitigation for Universal Gates on Encoded Qubits.
C. Piveteau, David Sutter, S. Bravyi +2 more·Mar 8, 2021
The Eastin-Knill theorem states that no quantum error-correcting code can have a universal set of transversal gates. For Calderbank-Shor-Steane codes that can implement Clifford gates transversally, it suffices to provide one additional non-Clifford ...
Stim: a fast stabilizer circuit simulator
C. Gidney·Mar 3, 2021
This paper presents “Stim", a fast simulator for quantum stabilizer circuits. The paper explains how Stim works and compares it to existing tools. With no foreknowledge, Stim can analyze a distance 100 surface code circuit (20 thousand qubits, 8 mill...
Scalable Hamiltonian learning for large-scale out-of-equilibrium quantum dynamics
Agnes Valenti, Guliuxin Jin, J. L'eonard +2 more·Mar 1, 2021
Large-scale quantum devices provide insights beyond the reach of classical simulations. However, for a reliable and verifiable quantum simulation, the building blocks of the quantum device require exquisite benchmarking. This benchmarking of large sc...
A hybrid quantum-classical Hamiltonian learning algorithm
Youle Wang, Guangxi Li, Xin Wang·Mar 1, 2021
This study develops a concrete near-term quantum algorithm for Hamiltonian learning and demonstrates its effectiveness. In particular, we show that learning the spectrum of Hamiltonians during the learning process could produce high-precision estimat...
Large-Scale Quantum Approximate Optimization via Divide-and-Conquer
Junde Li, M. Alam, Swaroop Ghosh·Feb 26, 2021
Quantum approximate optimization algorithm (QAOA) is a promising hybrid quantum-classical algorithm for solving combinatorial optimization problems. However, it cannot overcome qubit limitation for large-scale problems. Furthermore, the simulation ti...
Demonstration of a quantum advantage by a joint detection receiver for optical communication using quantum belief propagation on a trapped-ion device
Conor Delaney, K. Seshadreesan, I. MacCormack +3 more·Feb 25, 2021
Demonstrations of quantum advantage have largely focused on computational speedups and on quantum simulation of many-body physics, limited by fidelity and capability of current devices. Discriminating laser-pulse-modulated classical-communication code...
Benchmarking Quantum Coprocessors in an Application-Centric, Hardware-Agnostic, and Scalable Way
S. Martiel, T. Ayral, Cyril Allouche·Feb 25, 2021
Existing protocols for benchmarking current quantum coprocessors fail to meet the usual standards for assessing the performance of high-performance-computing platforms. After a synthetic review of these protocols—whether at the gate, circuit, or appl...
QNLP in Practice: Running Compositional Models of Meaning on a Quantum Computer
Robin Lorenz, A. Pearson, K. Meichanetzidis +2 more·Feb 25, 2021
Quantum Natural Language Processing (QNLP) deals with the design and implementation of NLP models intended to be run on quantum hardware. In this paper, we present results on the first NLP experiments conducted on Noisy Intermediate-Scale Quantum (NI...
Binary Subspace Chirps
Tefjol Pllaha, O. Tirkkonen, R. Calderbank·Feb 24, 2021
We describe in detail the interplay between binary symplectic geometry and notions from quantum computation, with the ultimate goal of constructing highly structured codebooks. The Binary Chirps (BCs) are Complex Grassmannian Lines in <inline-formula...
Imaginary Time Propagation on a Quantum Chip
F. Turro, A. Roggero, Valentina Amitrano +5 more·Feb 24, 2021
Evolution in imaginary time is a prominent technique for finding the ground state of quantum many-body systems, and the heart of a number of numerical methods that have been used with great success in quantum chemistry, condensed matter and nuclear p...
High-fidelity laser-free universal control of trapped ion qubits
R. Srinivas, S. Burd, H. Knaack +9 more·Feb 24, 2021
Universal control of multiple qubits—the ability to entangle qubits and to perform arbitrary individual qubit operations1—is a fundamental resource for quantum computing2, simulation3 and networking4. Qubits realized in trapped atomic ions have shown...
Probing quantum information propagation with out-of-time-ordered correlators
Jochen Braumuller, A. Karamlou, Y. Yanay +13 more·Feb 23, 2021
Interacting many-body quantum systems show a rich array of physical phenomena and dynamical properties, but are notoriously difficult to study: they are analytically challenging and exponentially hard to simulate on classical computers. Small-scale q...
Resource-efficient encoding algorithm for variational bosonic quantum simulations
Marco Majland, N. Zinner·Feb 23, 2021
Quantum algorithms are promising candidates for the enhancement of computational efficiency for a variety of computational tasks, allowing for the numerical study of physical systems intractable to classical computers. In the Noisy Intermediate Scale ...
Approximations in Transmon Simulation
Tyler Jones, Kaiah Steven, Xavier Poncini +2 more·Feb 19, 2021
Classical simulations of time-dependent quantum systems are widely used in quantum control research. In particular, these simulations are commonly used to host iterative optimal control algorithms. This is convenient for algorithms that are too onero...