Papers
Live trends in quantum computing research, updated daily from arXiv.
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13,526 papers in 12 months (-19% vs prior quarter)
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Hardware platform mentions in abstracts — Photonic leads
Decision Diagrams for Symbolic Verification of Quantum Circuits
Xin Hong, Wei-Jia Huang, W. Chien +5 more·Aug 1, 2023
With the rapid development of quantum computing, automatic verification of quantum circuits becomes more and more important. While several decision diagrams (DDs) have been introduced in quantum circuit simulation and verification, none of them suppo...
Molecular Symmetry in VQE: A Dual Approach for Trapped-Ion Simulations of Benzene
J. Goings, Luning Zhao, J. Jakowski +2 more·Aug 1, 2023
Understanding complex chemical systems—such as biomolecules, catalysts, and novel materials—is a central goal of quantum simulations. Near-term strategies hinge on the use of variational quantum eigensolver (VQE) algorithms combined with a suitable a...
Quantum state tomography with locally purified density operators and local measurements
Yuchen Guo, Shuo Yang·Jul 31, 2023
Understanding quantum systems is of significant importance for assessing the performance of quantum hardware and software, as well as exploring quantum control and quantum sensing. An efficient representation of quantum states enables realizing quant...
Simulating photon counting from dynamic quantum emitters by exploiting zero-photon measurements
S. Wein·Jul 31, 2023
Many applications of quantum optics demand delicate quantum properties of light carefully tailored to accomplish a specific task. To this end, numerical simulations of quantum light sources are vital for designing, characterizing, and optimizing quan...
An entanglement-aware quantum computer simulation algorithm
M. Oliva·Jul 31, 2023
The advent of quantum computers promises exponential speed ups in the execution of various computational tasks. While their capabilities are hindered by quantum decoherence, they can be exactly simulated on classical hardware at the cost of an expone...
Quantum simulation of Pauli channels and dynamical maps: Algorithm and implementation
Tomas Basile, C. Pineda·Jul 31, 2023
Pauli channels are fundamental in the context of quantum computing as they model the simplest kind of noise in quantum devices. We propose a quantum algorithm for simulating Pauli channels and extend it to encompass Pauli dynamical maps (parametrized...
Simulation of quantum computation with magic states via Jordan-Wigner transformations
Michael Zurel, Lawrence Z. Cohen, Robert Raussendorf·Jul 29, 2023
Negativity in certain quasiprobability representations is a necessary condition for a quantum computational advantage. Here we define a quasiprobability representation exhibiting this property with respect to quantum computations in the magic state m...
Two-Qubit Gate Set Tomography with Fewer Circuits
K. Rudinger, Corey I. Ostrove, Stefan K. Seritan +4 more·Jul 28, 2023
Gate set tomography (GST) is a self-consistent and highly accurate method for the tomographic reconstruction of a quantum information processor's quantum logic operations, including gates, state preparations, and measurements. However, GST's experime...
Quantum Computer Simulations at Warp Speed: Assessing the Impact of GPU Acceleration: A Case Study with IBM Qiskit Aer, Nvidia Thrust & cuQuantum
Jennifer Faj, Ivy Bo Peng, Jacob Wahlgren +1 more·Jul 27, 2023
Quantum computer simulators are crucial for the development of quantum computing. This work investigates GPU and multi-GPU systems' suitability and performance impact on a widely used simulation tool – the state vector simulator Qiskit Aer. In partic...
Factory-based fault-tolerant preparation of quantum polar codes encoding one logical qubit
Ashutosh Goswami, M. Mhalla, Valentin Savin·Jul 27, 2023
A fault-tolerant way to prepare logical code-states of Q1 codes, i.e., quantum polar codes encoding one qubit, has been recently proposed. The fault tolerance therein is guaranteed by an error detection gadget, where if an error is detected during th...
Simulation of quantum algorithms using classical probabilistic bits and circuits
D. Yavuz, A. Yadav·Jul 26, 2023
We discuss a new approach to simulate quantum algorithms using classical probabilistic bits and circuits. Each qubit (a two-level quantum system) is initially mapped to a vector in an eight dimensional probability space (equivalently, to a classical ...
Compressed Gate Characterization for Quantum Devices with Time-Correlated Noise
M. Gullans, M. Caranti, A. Mills +1 more·Jul 26, 2023
As quantum devices make steady progress towards intermediate scale and fault-tolerant quantum computing, it is essential to develop rigorous and efficient measurement protocols that account for known sources of noise. Most existing quantum characteri...
Reconstructing thermal quantum quench dynamics from pure states
Jason Saroni, Henry Lamm, P. Orth +1 more·Jul 26, 2023
Simulating the nonequilibrium dynamics of thermal states is a fundamental problem across scales from high energy to condensed matter physics. Quantum computers may provide a way to solve this problem efficiently. Preparing a thermal state on a quantu...
Single-flux-quantum-based qubit control with tunable driving strength
Kuang 匡 Liu 刘, Y. Wang 王, Bo 波 Ji 季 +3 more·Jul 26, 2023
Single-flux-quantum (SFQ) circuits have great potential in building cryogenic quantum-classical interfaces for scaling up superconducting quantum processors. SFQ-based quantum gates have been designed and realized. However, current control schemes ar...
Calculating the Single-Particle Many-body Green's Functions via the Quantum Singular Value Transform Algorithm
Alexis Ralli, G. Greene‐Diniz, D. M. Ramo +1 more·Jul 25, 2023
The Quantum Singular Value Transformation (QSVT) is a technique that provides a unified framework for describing many of the quantum algorithms discovered to date. We implement a noise-free simulation of the technique to investigate how it can be use...
Improved precision scaling for simulating coupled quantum-classical dynamics
Sophia Simon, Raffaele Santagati, Matthias Degroote +3 more·Jul 24, 2023
We present a super-polynomial improvement in the precision scaling of quantum simulations for coupled classical-quantum systems in this paper. Such systems are found, for example, in molecular dynamics simulations within the Born-Oppenheimer approxim...
Improved Digital Quantum Simulation by Non-Unitary Channels
W. Gong, Y. Kharkov, Minh C. Tran +2 more·Jul 24, 2023
Simulating quantum systems is one of the most promising avenues to harness the computational power of quantum computers. However, hardware errors in noisy near-term devices remain a major obstacle for applications. Ideas based on the randomization of...
Single entanglement connection architecture between multi-layer bipartite hardware efficient ansatz
Shikun Zhang, Zheng Qin, Yang Zhou +3 more·Jul 23, 2023
Variational quantum algorithms are among the most promising algorithms to achieve quantum advantages in the noisy intermediate-scale quantum (NISQ) era. One important challenge in implementing such algorithms is to construct an effective parameterize...
A new basis for Hamiltonian SU(2) simulations
C. Bauer, Irian D'Andrea, M. Freytsis +1 more·Jul 21, 2023
Due to rapidly improving quantum computing hardware, Hamiltonian simulations of relativistic lattice field theories have seen a resurgence of attention. This computational tool requires turning the formally infinite-dimensional Hilbert space of the f...
Connecting quantum cities: simulation of a satellite-based quantum network
Raja Yehia, M. Schiavon, Valentina Marulanda Acosta +4 more·Jul 21, 2023
We present and analyze an architecture for a European-scale quantum network using satellite links to connect Quantum Cities, which are metropolitan quantum networks with minimal hardware requirements for the end users. Using NetSquid, a quantum netwo...