Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Context-aware fidelity estimation
D. Debroy, É. Genois, J. Gross +6 more·Mar 30, 2023
We present Context Aware Fidelity Estimation (CAFE), a framework for benchmarking quantum operations that offers several practical advantages over existing methods such as Randomized Benchmarking (RB) and Cross-Entropy Benchmarking (XEB). In CAFE, a ...
Fault Tolerant Non-Clifford State Preparation for Arbitrary Rotations
Hyeongrak Choi, F. Chong, D. Englund +1 more·Mar 30, 2023
Quantum error correction is an essential component for practical quantum computing on noisy quantum hardware. However, logical operations on error-corrected qubits require a significant resource overhead, especially for high-precision and high-fideli...
Non-classical microwave–optical photon pair generation with a chip-scale transducer
S. Meesala, Steven Wood, D. Lake +6 more·Mar 30, 2023
A transducer that generates microwave–optical photon pairs is demonstrated. This could provide an interface between optical communication networks and superconducting quantum devices that operate at microwave frequencies. Modern computing and communi...
The Error Reconstruction and Compiled Calibration of Quantum Computing Cycles
Arnaud Carignan-Dugas, D. Dahlen, Ian Hincks +6 more·Mar 30, 2023
Quantum computers are inhibited by physical errors that occur during computation. For this reason, the development of increasingly sophisticated error characterization and error suppression techniques is central to the progress of quantum computing. ...
Homomorphic encryption of the k=2 Bernstein–Vazirani algorithm
Pablo Fernández, M. Martin-Delgado·Mar 30, 2023
We introduce a class of circuits that solve a particular case of the Bernstein–Vazirani recursive problem for second-level recursion. This class of circuits allows for the implementation of the oracle using a number of T-gates that grows linearly wit...
Detecting Entanglement by State Preparation and Local Measurements
Jaemin Kim, Anindita Bera, Dariusz Chruściński +1 more·Mar 29, 2023
Entanglement witnesses (EWs) are a collection of observables that can characterize separable states and, experimentally, estimating EWs can verify entangled states. In this work, we show that a fixed measurement setting on a multipartite entangled st...
Proposal for practical Rydberg quantum gates using a native two-photon excitation
Rui Li, J. Qian, Weiping Zhang·Mar 29, 2023
Rydberg quantum gate serving as an indispensable computing unit for neutral-atom quantum computation, has attracted intense research efforts for the last decade. However, the state-of-the-art experiments have not reached the high gate fidelity as pre...
Database of semiconductor point-defect properties for applications in quantum technologies
V. Ivanov, A. Ivanov, J. Simoni +4 more·Mar 29, 2023
Solid-state point defects are attracting increasing attention in the field of quantum information science, because their localized states can act as a spin-photon interface in devices that store and transfer quantum information, which have been used ...
Control of the <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline" overflow="scroll"><mml:mi>Z</mml:mi><mml:mi>Z</mml:mi></mml:math> coupling between Kerr cat qubits via transmon couplers
Takaaki Aoki, T. Kanao, Hayato Goto +2 more·Mar 29, 2023
Kerr-cat qubits are a promising candidate for fault-tolerant quantum computers owing to the biased nature of their errors. The $ZZ$ coupling between the qubits can be utilized for a two-qubit entangling gate, but the residual coupling called $ZZ$ cro...
Potential quantum advantage for simulation of fluid dynamics
Xiangyu Li, Xiaolong Yin, N. Wiebe +4 more·Mar 29, 2023
Numerical simulation of turbulent fluid dynamics needs to either parametrize turbulence—which introduces large uncertainties—or explicitly resolve the smallest scales—which is prohibitively expensive. Here, we provide evidence through analytic bounds...
Non-Pauli Errors Can Be Efficiently Sampled in Qudit Surface Codes.
Yue-Chi Ma, M. Hanks, M. S. Kim·Mar 29, 2023
Surface codes are the most promising candidates for fault-tolerant quantum computation. Single qudit errors are typically modeled as Pauli operators, to which general errors are converted via randomizing methods. In this Letter, we quantify remaining...
Analyzing variational quantum landscapes with information content
Adri'an P'erez-Salinas, Hao Wang, Xavier Bonet-Monroig·Mar 29, 2023
The parameters of the quantum circuit in a variational quantum algorithm induce a landscape that contains the relevant information regarding its optimization hardness. In this work, we investigate such landscapes through the lens of information conte...
Topological error correcting processes from fixed-point path integrals
A. Bauer·Mar 29, 2023
We propose a unifying paradigm for analyzing and constructing topological quantum error correcting codes as dynamical circuits of geometrically local channels and measurements. To this end, we relate such circuits to discrete fixed-point path integra...
Quantum Deep Hedging
El Amine Cherrat, S. Raj, Iordanis Kerenidis +12 more·Mar 29, 2023
Quantum machine learning has the potential for a transformative impact across industry sectors and in particular in finance. In our work we look at the problem of hedging where deep reinforcement learning offers a powerful framework for real markets....
Scalable Heteronuclear Architecture of Neutral Atoms Based on EIT
A. Farouk, I. Beterov, Peng Xu +1 more·Mar 29, 2023
Based on our recent paper [arXiv:2206.12176 (2022)], we propose a scalable heteronuclear architecture of parallel implementation of CNOT gates in arrays of alkali-metal neutral atoms for quantum information processing. We considered a scheme where we...
Mapping quantum algorithms to multi-core quantum computing architectures
Anabel Ovide, Santiago Rodrigo, Medina Bandic +5 more·Mar 28, 2023
Current monolithic quantum computer architectures have limited scalability. One promising approach for scaling them up is to use a modular or multi-core architecture, in which different quantum processors (cores) are connected via quantum and classic...
Stabilization and Dissipative Information Transfer of a Superconducting Kerr-Cat Qubit
Ufuk Korkmaz, Deniz Türkpençe·Mar 28, 2023
Today, the competition to build a quantum computer continues, and the number of qubits in hardware is increasing rapidly. However, the quantum noise that comes with this process reduces the performance of algorithmic applications, so alternative ways...
Trainable Variational Quantum-Multiblock ADMM Algorithm for Generation Scheduling
Reza Mahroo, A. Kargarian·Mar 28, 2023
The advent of quantum computing can potentially revolutionize how complex problems are solved. This paper proposes a two-loop quantum-classical solution algorithm for generation scheduling by infusing quantum computing, machine learning, and distribu...
Sparse Blossom: correcting a million errors per core second with minimum-weight matching
O. Higgott, C. Gidney·Mar 28, 2023
In this work, we introduce a fast implementation of the minimum-weight perfect matching (MWPM) decoder, the most widely used decoder for several important families of quantum error correcting codes, including surface codes. Our algorithm, which we ca...
Computation of Green's function by local variational quantum compilation
S. Kanasugi, S. Tsutsui, Yuya O. Nakagawa +3 more·Mar 28, 2023
Computation of the Green's function is crucial to study the properties of quantum many-body systems such as strongly correlated systems. Although the high-precision calculation of the Green's function is a notoriously challenging task on classical co...