Search Results - "PRX quantum"
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Connecting Ansatz Expressibility to Gradient Magnitudes and Barren Plateaus
Published in PRX quantum (24-01-2022)“…Parametrized quantum circuits serve as ansatze for solving variational problems and provide a flexible paradigm for the programming of near-term quantum…”
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Quantum Simulators: Architectures and Opportunities
Published in PRX quantum (01-02-2021)“…Quantum simulators are a promising technology on the spectrum of quantum devices from specialized quantum experiments to universal quantum computers. These…”
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Entanglement-Induced Barren Plateaus
Published in PRX quantum (25-10-2021)“…We argue that an excess in entanglement between the visible and hidden units in a quantum neural network can hinder learning. In particular, we show that…”
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Development of Quantum Interconnects (QuICs) for Next-Generation Information Technologies
Published in PRX quantum (24-02-2021)“…Just as “classical” information technology rests on a foundation built of interconnected information-processing systems, quantum information technology (QIT)…”
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Building a Fault-Tolerant Quantum Computer Using Concatenated Cat Codes
Published in PRX quantum (23-02-2022)“…We present a comprehensive architectural analysis for a proposed fault-tolerant quantum computer based on cat codes concatenated with outer quantum…”
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Quantum Computer Systems for Scientific Discovery
Published in PRX quantum (24-02-2021)“…The great promise of quantum computers comes with the dual challenges of building them and finding their useful applications. We argue that these two…”
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Compact Ion-Trap Quantum Computing Demonstrator
Published in PRX quantum (01-06-2021)“…Quantum information processing is steadily progressing from a purely academic discipline towards applications throughout science and industry. Transitioning…”
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Real- and Imaginary-Time Evolution with Compressed Quantum Circuits
Published in PRX quantum (01-03-2021)“…The current generation of noisy intermediate-scale quantum computers introduces new opportunities to study quantum many-body systems. In this paper, we show…”
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Measurement and Entanglement Phase Transitions in All-To-All Quantum Circuits, on Quantum Trees, and in Landau-Ginsburg Theory
Published in PRX quantum (01-03-2021)“…A quantum many-body system whose dynamics includes local measurements at a nonzero rate can be in distinct dynamical phases, with differing entanglement…”
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Quantum Simulation for High-Energy Physics
Published in PRX quantum (03-05-2023)“…It is for the first time that quantum simulation for high-energy physics (HEP) is studied in the U.S. decadal particle-physics community planning, and in fact…”
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Exploring Entanglement and Optimization within the Hamiltonian Variational Ansatz
Published in PRX quantum (08-12-2020)“…Quantum variational algorithms are one of the most promising applications of near-term quantum computers; however, recent studies have demonstrated that unless…”
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Qubit-ADAPT-VQE: An Adaptive Algorithm for Constructing Hardware-Efficient Ansätze on a Quantum Processor
Published in PRX quantum (28-04-2021)“…Quantum simulation, one of the most promising applications of a quantum computer, is currently being explored intensely using the variational quantum…”
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Grand Unification of Quantum Algorithms
Published in PRX quantum (01-12-2021)“…Quantum algorithms offer significant speed-ups over their classical counterparts for a variety of problems. The strongest arguments for this advantage are…”
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Scalable Mitigation of Measurement Errors on Quantum Computers
Published in PRX quantum (01-11-2021)“…We present a method for mitigating measurement errors on quantum computing platforms that does not form the full assignment matrix, or its inverse, and works…”
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Robust Shadow Estimation
Published in PRX quantum (01-09-2021)“…Efficiently estimating properties of large and strongly coupled quantum systems is a central focus in many-body physics and quantum information theory. While…”
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Quantum Technologies Need a Quantum Energy Initiative
Published in PRX quantum (01-06-2022)“…Quantum technologies are currently the object of high expectations from governments and private companies, as they hold the promise to shape safer and faster…”
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Integrated Quantum Photonics with Silicon Carbide: Challenges and Prospects
Published in PRX quantum (15-12-2020)“…Optically addressable solid-state spin defects are promising candidates for storing and manipulating quantum information using their long coherence…”
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Quantum Low-Density Parity-Check Codes
Published in PRX quantum (01-10-2021)“…Quantum error correction is an indispensable ingredient for scalable quantum computing. In this Perspective we discuss a particular class of quantum codes…”
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19
Avoiding Barren Plateaus Using Classical Shadows
Published in PRX quantum (01-06-2022)“…Variational quantum algorithms are promising algorithms for achieving quantum advantage on near-term devices. The quantum hardware is used to implement a…”
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Breaking the Rate-Loss Bound of Quantum Key Distribution with Asynchronous Two-Photon Interference
Published in PRX quantum (01-04-2022)“…Twin-field quantum key distribution can overcome the secret key capacity of repeaterless quantum key distribution via single-photon interference. However, to…”
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