Papers
Live trends in quantum computing research, updated daily from arXiv.
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13,047 papers in 12 months (-2% vs prior quarter)
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Hybrid quantum-gap-estimation algorithm using a filtered time series
Woojun Lee, Ryan Scott, V. Scarola·Dec 28, 2022
Quantum simulation advantage over classical memory limitations would allow compact quantum circuits to yield insight into intractable quantum many-body problems, but the interrelated obstacles of large circuit depth in quantum time evolution and nois...
Programmable frequency-bin quantum states in a nano-engineered silicon device
M. Clementi, F. Sabattoli, M. Borghi +12 more·Dec 26, 2022
Photonic qubits should be controllable on-chip and noise-tolerant when transmitted over optical networks for practical applications. Furthermore, qubit sources should be programmable and have high brightness to be useful for quantum algorithms and gr...
Simulation of Networked Quantum Computing on Encrypted Data
Ieva Čepaitė·Dec 25, 2022
Due to the limited availability of quantum computing power in the near future, cryptographic security techniques must be developed for secure remote use of current and future quantum computing hardware. Prominent among these is Universal Blind Quantu...
PANSATZ: pulse-based ansatz for variational quantum algorithms
Dekel Meirom, S. Frankel·Dec 25, 2022
Quantum computers promise a great computational advantage over classical computers, which might help solve various computational challenges such as the simulation of complicated quantum systems, finding optimum in large optimization problems, and sol...
Optimizing one-axis twists for variational Bayesian quantum metrology
Tyler G. Thurtell, A. Miyake·Dec 23, 2022
Quantum metrology and sensing seek advantages in estimating an unknown parameter of some quantum state or channel, using entanglement such as spin squeezing produced by one-axis twists or other quantum resources. In particular, qubit phase estimation...
Sub-Mbps key-rate continuous-variable quantum key distribution with local local oscillator over 100-km fiber.
Yaodi Pi, Heng Wang, Ya Pan +6 more·Dec 22, 2022
We experimentally demonstrated a sub-Mbps key rate Gaussian-modulated coherent-state (GMCS) continuous-variable quantum key distribution (CV-QKD) over a 100-km transmission distance. To efficiently control the excess noise, the quantum signal and the...
An unsupervised deep learning algorithm for single-site reconstruction in quantum gas microscopes
Alexander Impertro, Julian F. Wienand, Sophie Häfele +6 more·Dec 22, 2022
In quantum gas microscopy experiments, reconstructing the site-resolved lattice occupation with high fidelity is essential for the accurate extraction of physical observables. For short interatomic separations and limited signal-to-noise ratio, this ...
High-performance repetition cat code using fast noisy operations
François-Marie Le Régent, Camille Berdou, Z. Leghtas +2 more·Dec 22, 2022
Bosonic cat qubits stabilized by two-photon driven dissipation benefit from exponential suppression of bit-flip errors and an extensive set of gates preserving this protection. These properties make them promising building blocks of a hardware-effici...
Decoding surface codes with deep reinforcement learning and probabilistic policy reuse
E. Matekole, Esther Ye, Ramya Iyer +1 more·Dec 22, 2022
Quantum computing (QC) promises significant advantages on certain hard computational tasks over classical computers. However, current quantum hardware, also known as noisy intermediate-scale quantum computers (NISQ), are still unable to carry out com...
Quantum computing on magnetic racetracks with flying domain wall qubits
J. Zou, S. Bosco, B. Pal +3 more·Dec 22, 2022
Domain walls (DWs) on magnetic racetracks are at the core of the field of spintronics, providing a basic element for classical information processing. Here, we show that mobile DWs also provide a blueprint for large-scale quantum computers. Remarkabl...
Biased Gottesman-Kitaev-Preskill repetition code
Matthew P. Stafford, N. Menicucci·Dec 21, 2022
Continuous-variable quantum computing architectures based upon the Gottesmann-Kitaev-Preskill (GKP) encoding have emerged as a promising candidate because one can achieve fault-tolerance with a probabilistic supply of GKP states and Gaussian operatio...
Synergetic quantum error mitigation by randomized compiling and zero-noise extrapolation for the variational quantum eigensolver
Tomochika Kurita, Hammam Qassim, M. Ishii +3 more·Dec 21, 2022
We propose a quantum error mitigation strategy for the variational quantum eigensolver (VQE) algorithm. We find, via numerical simulation, that very small amounts of coherent noise in VQE can cause substantially large errors that are difficult to sup...
Algorithmic Shadow Spectroscopy
H. Chan, Richard Meister, Matthew L. Goh +1 more·Dec 21, 2022
We present shadow spectroscopy as a simulator-agnostic quantum algorithm for estimating energy gaps using very few circuit repetitions (shots) and no extra resources (ancilla qubits) beyond performing time evolution and measurements. The approach bui...
Distributed Quantum Computing: a Survey
M. Caleffi, M. Amoretti, Davide Ferrari +4 more·Dec 20, 2022
Nowadays, quantum computing has reached the engineering phase, with fully-functional quantum processors integrating hundred of noisy qubits available. Yet -- to fully unveil the potential of quantum computing out of the labs and into business reality...
Tensor-network-assisted variational quantum algorithm
Jun-Jie Huang, Wenhao He, Yukun Zhang +3 more·Dec 20, 2022
Near-term quantum devices generally suffer from shallow circuit depth and hence limited expressivity due to noise and decoherence. To address this, we propose tensor-network-assisted parametrized quantum circuits, which concatenate a classical tensor...
Matrix product channel: Variationally optimized quantum tensor network to mitigate noise and reduce errors for the variational quantum eigensolver
S. Filippov, Boris Sokolov, M. Rossi +5 more·Dec 20, 2022
Quantum processing units boost entanglement at the level of hardware and enable physical simulations of highly correlated electron states in molecules and intermolecular chemical bonds. The variational quantum eigensolver provides a hardware-efficien...
Robust control and optimal Rydberg states for neutral atom two-qubit gates
M. Mohan, R. D. de Keijzer, S. Kokkelmans·Dec 20, 2022
We investigate the robustness of two-qubit gates to deviations of experimental controls, on a neutral atom platform utilizing Rydberg states. We construct robust CZ gates - employing techniques from quantum optimal control - that retain high Bell sta...
Performance of Uncoded Implementation of Grover’s Algorithm on Today’s Quantum Processors
Yunos El Kaderi, A. Honecker, I. Andriyanova·Dec 20, 2022
This work tests the performance of Grover’s search circuits on some IBM superconducting quantum devices in case of the size of search space N = 16 and N = 32. Ideally, we expect to get an outcome probability distribution that is clearly peaked at the...
Robustness of quantum reinforcement learning under hardware errors
Andrea Skolik, Stefano Mangini, Thomas Bäck +2 more·Dec 19, 2022
Variational quantum machine learning algorithms have become the focus of recent research on how to utilize near-term quantum devices for machine learning tasks. They are considered suitable for this as the circuits that are run can be tailored to the...
Wideband Josephson Parametric Isolator
M. Beck, M. Selvanayagam, A. Carniol +2 more·Dec 16, 2022
The cryogenic hardware required to build a superconducting qubit based quantum computer demands a variety of microwave components. These elements include microwave couplers, filters, amplifiers, and circulators/isolators. Traditionally implemented as...