Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Adaptive variational simulation for open quantum systems
Huo Chen, N. Gomes, Siyuan Niu +1 more·May 11, 2023
Emerging quantum hardware provides new possibilities for quantum simulation. While much of the research has focused on simulating closed quantum systems, the real-world quantum systems are mostly open. Therefore, it is essential to develop quantum al...
Parallelizing Quantum-Classical Workloads: Profiling the Impact of Splitting Techniques
Tuhin Khare, Ritajit Majumdar, Rajiv Sangle +3 more·May 11, 2023
Quantum computers are the next evolution of computing hardware. Quantum devices are being exposed through the same familiar cloud platforms used for classical computers, and enabling seamless execution of hybrid applications that combine quantum and ...
Effectiveness of quantum annealing for continuous-variable optimization
S. Arai, Hiroki Oshiyama, H. Nishimori·May 11, 2023
The application of quantum annealing to the optimization of continuous-variable functions is a relatively unexplored area of research. We test the performance of quantum annealing applied to a one-dimensional continuous-variable function with a rugge...
Lifting Topological Codes: Three-Dimensional Subsystem Codes from Two-Dimensional Anyon Models
Jacob C. Bridgeman, Aleksander Kubica, M. Vasmer·May 10, 2023
Topological subsystem codes in three spatial dimensions allow for quantum error correction with no time overhead, even in the presence of measurement noise. The physical origins of this single-shot property remain elusive, in part due to the scarcity...
Quantum Approximate Optimization Algorithm with Cat Qubits
Pontus Vikstaal, Laura Garc'ia-'Alvarez, S. Puri +1 more·May 9, 2023
The Quantum Approximate Optimization Algorithm (QAOA) -- one of the leading algorithms for applications on intermediate-scale quantum processors -- is designed to provide approximate solutions to combinatorial optimization problems with shallow quant...
Modular Cluster Circuits for the Variational Quantum Eigensolver.
S. E. Ghasempouri, G. Dueck, Stijn De Baerdemacker·May 8, 2023
The variational quantum eigensolver algorithm recently became a popular method to compute the quantum chemical properties of molecules on noisy intermediate scale quantum (NISQ) devices. In order to avoid noise accumulation from the NISQ device in th...
Operational Markovianization in randomized benchmarking
Pedro Figueroa Romero, Miha Papič, Adrian Auer +3 more·May 8, 2023
A crucial task to obtain optimal and reliable quantum devices is to quantify their overall performance. The average fidelity of quantum gates is a particular figure of merit that can be estimated efficiently by randomized benchmarking (RB). However, ...
A sharp phase transition in linear cross-entropy benchmarking
Brayden Ware, A. Deshpande, D. Hangleiter +4 more·May 8, 2023
Demonstrations of quantum computational advantage and benchmarks of quantum processors via quantum random circuit sampling are based on evaluating the linear cross-entropy benchmark (XEB). A key question in the theory of XEB is whether it approximate...
Fully directional quantum-limited phase-preserving amplifier
Gangqiang Liu, A. Lingenfelter, V. Joshi +4 more·May 7, 2023
We present a way to achieve fully directional, quantum-limited phase-preserving amplification in a four-port, four-mode superconducting Josephson circuit by utilizing interference between six parametric processes that couple all four modes. Full dire...
Superoscillating quantum control induced by sequential selections
Yongcheng Ding, Yiming Pan, Xi Chen·May 7, 2023
Superoscillation is a counterintuitive phenomenon for its mathematical feature of ``faster-than-Fourier", which has allowed novel optical imaging beyond the diffraction limit. In this article, we introduce a superoscillating quantum control protocol ...
Efficient information recovery from Pauli noise via classical shadow
Yifei Chen, Zhan Yu, Chenghong Zhu +1 more·May 6, 2023
The rapid advancement of quantum computing has led to an extensive demand for effective techniques to extract classical information from quantum systems, particularly in fields like quantum machine learning and quantum chemistry. However, quantum sys...
Parallelization of frequency domain quantum gates: manipulation and distribution of frequency-entangled photon pairs generated by a 21 GHz silicon microresonator
Antoine Henry, D. Fioretto, Lorenzo M. Procopio +8 more·May 5, 2023
Abstract. Harnessing the frequency dimension in integrated photonics offers key advantages in terms of scalability, noise resilience, parallelization, and compatibility with telecom multiplexing techniques. Integrated ring resonators have been used t...
Resource Management in Quantum Virtual Private Networks
Shahrooz Pouryousef, Nitish K. Panigrahy, Monimoy Deb Purkayastha +4 more·May 5, 2023
In this study, we develop a resource management framework for a quantum virtual private network (qVPN), which involves the sharing of an underlying public quantum network by multiple organizations for quantum entanglement distribution. Our approach i...
Calibration of syndrome measurements in a single experiment
C. Wimmer, Jochen Szangolies, M. Epping·May 4, 2023
Quantum error correction can reduce the effects of noise in quantum systems, e.g. in metrology or most notably in quantum computing. Typically, this requires making measurements that provide information about the errors that have occurred in the syst...
Mitigating crosstalk errors by randomized compiling: Simulation of the BCS model on a superconducting quantum computer
H. Perrin, Thibault Scoquart, A. Shnirman +2 more·May 3, 2023
We develop and apply an extension of the randomized compiling (RC) protocol that includes a special treatment of neighboring qubits and dramatically reduces crosstalk effects caused by the application of faulty gates on superconducting qubits in IBMQ...
Approximate quantum error correction, covariance symmetry, and their relation
Hao Dai·May 3, 2023
To perform reliable quantum computation, quantum error correction is indispensable. In certain cases, continuous covariance symmetry of the physical system can make exact error correction impossible. In this work we study the approximate error correc...
Low-Noise Quantum Frequency Conversion of Photons from a Trapped Barium Ion to the Telecom O-band
Uday Saha, J. Siverns, J. Hannegan +2 more·May 2, 2023
Trapped ions are one of the leading candidates for scalable and long-distance quantum networks because of their long qubit coherence time, high fidelity single- and two-qubit gates, and their ability to generate photons entangled with the qubit state...
Fast Quantum Gate Design with Deep Reinforcement Learning Using Real-Time Feedback on Readout Signals
E. Wright, Rog´erio de Sousa·May 2, 2023
The design of high-fidelity quantum gates is difficult because it requires the optimization of two competing effects, namely maximizing gate speed and minimizing leakage out of the qubit subspace. We propose a deep reinforcement learning algorithm th...
Unitary Coupled Cluster: Seizing the Quantum Moment
I. Magoulas, Francesco A. Evangelista·May 1, 2023
Shallow, CNOT-efficient quantum circuits are crucial for performing accurate computational chemistry simulations on current noisy quantum hardware. Here, we explore the usefulness of noniterative energy corrections, based on the method of moments of ...
Efficient MILP Decomposition in Quantum Computing for ReLU Network Robustness
Nicola Franco, Tom Wollschlager, Benedikt Poggel +2 more·Apr 30, 2023
Emerging quantum computing technologies, such as Noisy Intermediate-Scale Quantum (NISQ) devices, offer potential advancements in solving mathematical optimization problems. However, limitations in qubit availability, noise, and errors pose challenge...