Papers
Live trends in quantum computing research, updated daily from arXiv.
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13,645 papers in 12 months (-16% vs prior quarter)
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Variational Quantum Simulation of Valence-Bond Solids
D. Huerga·Jan 7, 2022
We introduce a hybrid quantum-classical variational algorithm to simulate ground-state phase diagrams of frustrated quantum spin models in the thermodynamic limit. The method is based on a cluster-Gutzwiller ansatz where the wave function of the clus...
Benchmarking characterization methods for noisy quantum circuits
Megan L. Dahlhauser, T. Humble·Jan 6, 2022
Effective methods for characterizing the noise in quantum computing devices are essential for programming and debugging circuit performance. Existing approaches vary in the information obtained as well as the amount of quantum and classical resources...
Quantum capsule networks
Zidu Liu, Pei-Xin Shen, Weikang Li +2 more·Jan 5, 2022
Capsule networks (CapsNets), which incorporate the paradigms of connectionism and symbolism, have brought fresh insights into artificial intelligence (AI). The capsule, as the building block of CapsNets, is a group of neurons represented by a vector ...
Quantum integration of elementary particle processes
Gabriele Agliardi, M. Grossi, M. Pellen +1 more·Jan 5, 2022
We apply quantum integration to elementary particle-physics processes. In particular, we look at scattering processes such as ${\rm e}^+{\rm e}^- \to q \bar q$ and ${\rm e}^+{\rm e}^- \to q \bar q' {\rm W}$. The corresponding probability distribution...
Efficient Quantum Feature Extraction for CNN-based Learning
Tong Dou, Guofeng Zhang, W. Cui·Jan 4, 2022
Recent work has begun to explore the potential of parametrized quantum circuits (PQCs) as general function approximators. In this work, we propose a quantum-classical deep network structure to enhance classical CNN model discriminability. The convolu...
An approach to interfacing the brain with quantum computers: practical steps and caveats
E. Miranda, S. Venkatesh, J. Martín-Guerrero +3 more·Jan 4, 2022
We report on the first proof-of-concept system demonstrating how one can control a qubit with mental activity. We developed a method to encode neural correlates of mental activity as instructions for a quantum computer. Brain signals are detected uti...
Superconformal Quantum Mechanics on a Quantum Computer
Yuan Feng, M. McGuigan, Tristen White·Jan 3, 2022
We investigate superconformal quantum mechanics (SCQM) on a quantum computer. We study the ground state of the mass deformed SCQM on a quantum computed using the Variational Quantum Eigensolver (VQE) using a one boson and one boson one fermion Hilber...
Qubit Assignment Using Time Reversal
E. Peters, P. Shyamsundar, A. Li +1 more·Jan 3, 2022
As the number of qubits available on noisy quantum computers grows, it will become necessary to efficiently select a subset of physical qubits to use in a quantum computation. For any given quantum program and device there are many ways to assign phy...
Physical publicly verifiable randomness from pulsars
J. Dawson, G. Hobbs, Yansong Gao +28 more·Jan 1, 2022
We demonstrate how radio pulsars can be used as random number generators. Specifically, we focus on publicly verifiable randomness (PVR), in which the same sequence of trusted and verifiable random numbers is obtained by multiple parties. PVR is a cr...
Quantum Simulation of Hawking Radiation Using VQE Algorithm on IBM Quantum Computer
Ritu Dhaulakhandi, B. K. Behera·Dec 31, 2021
Quantum computers have an exponential speed-up advantage over classical computers. One of the most prominent utilities of quantum computers is their ability to study complex quantum systems in various fields using quantum computational algorithms. Qu...
Quantum computational study of chloride attack on chloromethane for chemical accuracy and quantum noise effects with UCCSD and k-UpCCGSD ansatzes
Hocheol Lim, Hyeon-Nae Jeon, J. Rhee +2 more·Dec 31, 2021
Quantum computing is expected to play an important role in solving the problem of huge computational costs in various applications by utilizing the collective properties of quantum states, including superposition, interference, and entanglement, to p...
Numerical simulations of noisy quantum circuits for computational chemistry
Jerimiah Wright, Meenambika Gowrishankar, Daniel Claudino +4 more·Dec 31, 2021
The opportunities afforded by near-term quantum computers to calculate the ground-state properties of small molecules depend on the structure of the computational ansatz as well as the errors induced by device noise. Here we investigate the behavior ...
Quantum simulation of fermionic systems using hybrid digital–analog quantum computing approach
N. Guseynov, W. Pogosov·Dec 30, 2021
We consider a hybrid digital–analog quantum computing approach, which allows implementing any quantum algorithm without standard two-qubit gates. This approach is based on the always-on interaction between qubits, which can provide an alternative to ...
Automatic quantum circuit encoding of a given arbitrary quantum state
T. Shirakawa, H. Ueda, S. Yunoki·Dec 29, 2021
We introduce an quantum-classical hybrid algorithm, named automatic quantum circuit encoding (AQCE), that is designed to encode an arbitrary quantum state |Ψ〉 onto an optimal quantum circuit Ĉ composed of a finite set of single- and two-qubit quantu...
Preparing thermal states on noiseless and noisy programmable quantum processors
O. Shtanko, R. Movassagh·Dec 29, 2021
Nature is governed by precise physical laws, which can inspire the discovery of new computer-run simulation algorithms. Thermal states are the most ubiquitous for they are the equilibrium states of matter. Simulating thermal states of quantum matter ...
Digital Quantum Simulation of the Schwinger Model and Symmetry Protection with Trapped Ions
N. Nguyen, Minh C. Tran, Yingyue Zhu +4 more·Dec 28, 2021
Tracking the dynamics of physical systems in real time is a prime application of digital quantum computers. Using a trapped-ion system with up to six qubits, we simulate the real-time dynamics of a lattice gauge theory in 1+1 dimensions, i.e., the la...
A full circuit-based quantum algorithm for excited-states in quantum chemistry
Jingwei Wen, Zheng-an Wang, Chi-Tong Chen +7 more·Dec 28, 2021
Utilizing quantum computer to investigate quantum chemistry is an important research field nowadays. In addition to the ground-state problems that have been widely studied, the determination of excited-states plays a crucial role in the prediction an...
Quantum simulation in the semi-classical regime
Shi Jin, Xiantao Li, Nana Liu·Dec 25, 2021
<jats:p>Solving the time-dependent Schrödinger equation is an important application area for quantum algorithms. We consider Schrödinger's equation in the semi-classical regime. Here the solutions exhibit strong multiple-scale behavior due to a small...
The Quantum Trellis: A classical algorithm for sampling the parton shower with interference effects
S. Macaluso, Kyle Cranmer·Dec 23, 2021
Simulations of high-energy particle collisions, such as those used at the Large Hadron Collider, are based on quantum field theory; however, many approximations are made in practice. For example, the simulation of the parton shower, which gives rise ...
Quantum dynamics simulations beyond the coherence time on noisy intermediate-scale quantum hardware by variational Trotter compression
Noah F. Berthusen, T. V. Trevisan, T. Iadecola +1 more·Dec 23, 2021
We demonstrate a post-quench dynamics simulation of a Heisenberg model on present-day IBM quantum hardware that extends beyond the coherence time of the device. This is achieved using a hybrid quantum-classical algorithm that propagates a state using...