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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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
A Proposed Quantum Hamiltonian Encoding Framework for Time Evolution Operator Design of Potential Energy Function
M. R. Laskar, K. Dasgupta, A. Bhattacharya·Aug 12, 2023
The exploration of potential energy operators in quantum systems holds paramount significance, offering profound insights into atomic behaviour, defining interactions, and enabling precise prediction of molecular dynamics. By embracing the Born-Oppen...
Fault Tolerant Quantum Error Mitigation
Alvin Gonzales, Anjala M. Babu, Ji Liu +2 more·Aug 10, 2023
Typically, fault-tolerant operations and code concatenation are reserved for quantum error correction due to their resource overhead. Here, we show that fault tolerant operations have a large impact on the performance of symmetry based error mitigati...
Universal imaginary-time critical dynamics on a quantum computer
Shenmin Zhang, Shuai Yin·Aug 10, 2023
Quantum computers promise a highly efficient approach to investigate quantum phase transitions, which describe abrupt changes between different ground states of many-body systems. At quantum critical points, the divergent correlation length and entan...
Benchmarking a trapped-ion quantum computer with 30 qubits
Jwo-Sy Chen, E. Nielsen, M. Ebert +8 more·Aug 9, 2023
Quantum computers are rapidly becoming more capable, with dramatic increases in both qubit count \cite{kim2023evidence} and quality \cite{moses2023race}. Among different hardware approaches, trapped-ion quantum processors are a leading technology for...
Large-Scale Simulation of Shor’s Quantum Factoring Algorithm
D. Willsch, M. Willsch, F. Jin +2 more·Aug 9, 2023
Shor’s factoring algorithm is one of the most anticipated applications of quantum computing. However, the limited capabilities of today’s quantum computers only permit a study of Shor’s algorithm for very small numbers. Here, we show how large GPU-ba...
Fuzzy gauge theory for quantum computers
A. Alexandru, P. Bedaque, A. Carosso +3 more·Aug 9, 2023
Continuous gauge theories, because of their bosonic degrees of freedom, have an infinite-dimensional local Hilbert space. Encoding these degrees of freedom on qubit-based hardware demands some sort of ``qubitization'' scheme, where one approximates t...
Fast and converged classical simulations of evidence for the utility of quantum computing before fault tolerance
Tomislav Begušić, Johnnie Gray, G. Chan·Aug 9, 2023
A recent quantum simulation of observables of the kicked Ising model on 127 qubits implemented circuits that exceed the capabilities of exact classical simulation. We show that several approximate classical methods, based on sparse Pauli dynamics and...
High-Photon-Loss Threshold Quantum Computing Using GHZ-State Measurements.
B. Pankovich, A. Kan, Kwok Ho Wan +5 more·Aug 8, 2023
We propose fault-tolerant architectures based on performing projective measurements in the Greenberger-Horne-Zeilinger (GHZ) basis on constant-sized, entangled resource states. We present linear-optical constructions of the architectures, where the G...
Scalable Circuits for Preparing Ground States on Digital Quantum Computers: The Schwinger Model Vacuum on 100 Qubits
R. Farrell, Marc Illa, Anthony N. Ciavarella +1 more·Aug 8, 2023
The vacuum of the lattice Schwinger model is prepared on up to 100 qubits of IBM's Eagle-processor quantum computers. A new algorithm to prepare the ground state of a gapped translationally-invariant system on a quantum computer is presented, which w...
Wavefunction branching: when you can't tell pure states from mixed states
Jordan K. Taylor, I. McCulloch·Aug 8, 2023
We propose a definition of wavefunction "branchings": quantum superpositions which can't be feasibly distinguished from the corresponding mixed state, even under time evolution. Our definition is largely independent of interpretations, requiring only...
Efficient techniques to GPU Accelerations of Multi-Shot Quantum Computing Simulations
J. Doi, H. Horii, Christopher Wood·Aug 7, 2023
Quantum computers are becoming practical for computing numerous applications. However, simulating quantum computing on classical computers is still demanding yet useful because current quantum computers are limited because of computer resources, hard...
Hamiltonian dynamics on digital quantum computers without discretization error
Etienne Granet, Henrik Dreyer·Aug 7, 2023
We introduce an algorithm to compute expectation values of time-evolved observables on digital quantum computers that requires only bounded average circuit depth to reach arbitrary precision, i.e. produces an unbiased estimator with finite average de...
Simulation of IBM's kicked Ising experiment with Projected Entangled Pair Operator
H. Liao, Kang L. Wang, Zongzheng Zhou +2 more·Aug 6, 2023
We perform classical simulations of the 127-qubit kicked Ising model, which was recently emulated using a quantum circuit with error mitigation [Nature 618, 500 (2023)]. Our approach is based on the projected entangled pair operator (PEPO) in the Hei...
Switching Time Optimization for Binary Quantum Optimal Control
Xinyu Fei, L. Brady, Jeffrey Larson +2 more·Aug 6, 2023
Quantum optimal control is a technique for controlling the evolution of a quantum system and has been applied to a wide range of problems in quantum physics. We study a binary quantum control optimization problem, where control decisions are binary-v...
Q-Pandora Unboxed: Characterizing Resilience of Quantum Error Correction Codes Under Biased Noise
Avimita Chatterjee, Subrata Das, Swaroop Ghosh·Aug 5, 2023
Quantum error correction codes (QECCs) are essential for reliable quantum computing as they protect quantum states against noise and errors. Limited research has explored the resilience of QECCs to biased noise, critical for selecting optimal codes. ...
M{\o}ller-Plesset Perturbation Theory Calculations on Quantum Devices
Junxu Li, Xingyu Gao, M. Sajjan +3 more·Aug 3, 2023
Accurate electronic structure calculations might be one of the most anticipated applications of quantum computing.The recent landscape of quantum simulations within the Hartree-Fock approximation raises the prospect of substantial theory and hardware...
Dissipative Dynamics of Graph-State Stabilizers with Superconducting Qubits.
Liran Shirizly, G. Misguich, H. Landa·Aug 3, 2023
We study experimentally and numerically the noisy evolution of multipartite entangled states, focusing on superconducting qubit devices accessible via the cloud. We find that a valid modeling of the dynamics requires one to properly account for coher...
cuQuantum SDK: A High-Performance Library for Accelerating Quantum Science
H. Bayraktar, A. Charara, David Clark +19 more·Aug 3, 2023
We present the NVIDIA cuQuantum SDK [1], a state-of-the-art library of composable primitives for GPU-accelerated quantum circuit simulations. As the size of quantum devices continues to increase, making their classical simulation progressively more d...
Dissipative mean-field theory of IBM utility experiment
E. Torre, Mor M. Roses·Aug 2, 2023
In spite of remarkable recent advances, quantum computers still lack useful applications. A promising direction for such utility is offered by the simulation of the dynamics of many-body quantum systems, which cannot be efficiently computed classical...
Lie-algebraic classical simulations for quantum computing
Matthew L. Goh, Martín Larocca, L. Cincio +2 more·Aug 2, 2023
The classical simulation of quantum dynamics plays an important role in our understanding of quantum complexity, and in the development of quantum technologies. Efficient techniques such as those based on the Gottesman-Knill theorem for Clifford circ...