Papers
Live trends in quantum computing research, updated daily from arXiv.
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15,384 papers in 12 months (-8% vs prior quarter)
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Hardware platform mentions in abstracts — Photonic leads
Quantum Maps Between CPTP and HPTP
Ningping Cao, Maxwell Fitzsimmons, Z. Mann +2 more·Aug 3, 2023
For an open quantum system to evolve under CPTP maps, assumptions are made on the initial correlations between the system and the environment. Hermitian-preserving trace-preserving (HPTP) maps are considered as the local dynamic maps beyond CPTP. In ...
Correcting biased noise using Gottesman-Kitaev-Preskill repetition code with noisy ancilla
Zhifei Li, D. Su·Aug 3, 2023
Concatenation of a bosonic code with a qubit code is one of the promising ways to achieve fault-tolerant quantum computation. As one of the most important bosonic codes, Gottesman-Kitaev-Preskill (GKP) code is proposed to correct small displacement e...
Benchmarking Adaptative Variational Quantum Algorithms on QUBO Instances
G. Turati, Maurizio Ferrari Dacrema, P. Cremonesi·Aug 3, 2023
In recent years, Variational Quantum Algorithms (VQAs) have emerged as a promising approach for solving optimization problems on quantum computers in the NISQ era. However, one limitation of VQAs is their reliance on fixed-structure circuits, which m...
Minimal qubit representations of Hamiltonians via conserved charges
Lane G. Gunderman, Andrew Jena, Luca Dellantonio·Aug 3, 2023
In the last years, we have been witnessing a tremendous push to demonstrate that quantum computers can solve classically intractable problems. This effort, initially focused on the hardware, progressively included the simplification of the models to ...
Measurement-induced criticality is tomographically optimal
A. Akhtar, Hong-ye Hu, Yi-Zhuang You·Aug 3, 2023
We develop a classical shadow tomography protocol utilizing the randomized measurement scheme based on hybrid quantum circuits, which consist of layers of two-qubit random unitary gates mixed with single-qubit random projective measurements. Unlike c...
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...
Performance Analysis of Satellite-Based QKD Protocols
Muskan, Ramniwas Meena, Subhashish Banerjee·Aug 2, 2023
Satellite-based free-space quantum key distribution (QKD) provides a practical framework for achieving secure global communication beyond the limitations of optical fibers. In this work, the quantum bit error rate (QBER) and secure key rate of four r...
qRLS: quantum relaxation for linear systems in finite element analysis
O. M. Raisuddin, Suvranu De·Aug 2, 2023
Quantum linear system algorithms (QLSAs) for gate-based quantum computing can provide exponential speedups for solving linear systems but face challenges when applied to finite element problems due to the growth of the condition number with problem s...
Differential evolution VQE for crypto-currency arbitrage. Quantum optimization with many local minima
Ginés Carrascal, B. Roman, Alberto A. Del Barrio +1 more·Aug 2, 2023
Crypto-currency markets are known to exhibit inefficiencies, which presents opportunities for profitable cyclic transactions or arbitrage, where one currency is traded for another in a way that results in a net gain without incurring any risk. Quantu...
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...
Fast Equivalence Checking of Quantum Circuits of Clifford Gates
D. Thanos, T. Coopmans, A. Laarman·Aug 2, 2023
Checking whether two quantum circuits are equivalent is important for the design and optimization of quantum-computer applications with real-world devices. We consider quantum circuits consisting of Clifford gates, a practically-relevant subset of al...
Software Architecture Challenges in Integrating Hybrid Classical-Quantum Systems
V. Stirbu, T. Mikkonen·Aug 2, 2023
The emergence of quantum computing proposes a revolutionary paradigm that can radically transform numerous scientific and industrial application domains. The ability of quantum computers to scale computations exponentially imply better performance an...
Neural-network-encoded variational quantum algorithms
Jiaqi Miao, Chang-Yu Hsieh, Shenmin Zhang·Aug 2, 2023
We introduce a general framework called neural network (NN) encoded variational quantum algorithms (VQAs), or NN-VQA for short, to address the challenges of implementing VQAs on noisy intermediate-scale quantum (NISQ) computers. Specifically, NN-VQA ...
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...
Multi-time quantum process tomography on a superconducting qubit
Christina Giarmatzi, Tyler Jones, Alexei Gilchrist +3 more·Aug 1, 2023
Current quantum technologies are at the cusp of becoming useful, but still face formidable obstacles such as noise. Noise severely limits the ability to scale quantum devices to the point that they would offer an advantage over classical devices. To ...
Semisupervised Anomaly Detection using Support Vector Regression with Quantum Kernel
Kilian Tscharke, Sebastian Issel, Pascal Debus·Aug 1, 2023
Anomaly detection, an important task in data analysis, involves identifying observations or events that deviate in some way from the rest of the data. Machine learning techniques have shown success in automating this process by detecting hidden patte...
Determining the ability for universal quantum computing: Testing controllability via dimensional expressivity
Fernando Gago-Encinas, T. Hartung, D. Reich +2 more·Aug 1, 2023
Operator controllability refers to the ability to implement an arbitrary unitary in SU(N) and is a prerequisite for universal quantum computing. Controllability tests can be used in the design of quantum devices to reduce the number of external contr...
Quantum error correction with an Ising machine under circuit-level noise
J. Fujisaki, Kazunori Maruyama, H. Oshima +4 more·Aug 1, 2023
Efficient decoding to estimate error locations from outcomes of syndrome measurement is the prerequisite for quantum error correction. Decoding in presence of circuit-level noise including measurement errors should be considered in case of actual qua...
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...
Scalable quantum measurement error mitigation via conditional independence and transfer learning
Chang-Woo Lee, D. Park·Aug 1, 2023
Mitigating measurement errors in quantum systems without relying on quantum error correction is of critical importance for the practical development of quantum technology. Deep learning-based quantum measurement error mitigation (QMEM) has exhibited ...