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Encoding-independent optimization problem formulation for quantum computing
Frontiers in Quantum Science and Technology, 2023 We review encoding and hardware-independent formulations of optimization problems for quantum computing. Using this generalized approach, an extensive library of optimization problems from the literature and their various derived spin encodings are ...
Federico Dominguez +7 more
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Practical distributed quantum information processing with LOCCNet
npj Quantum Information, 2021 Distributed quantum information processing is essential for building quantum networks and enabling more extensive quantum computations. In this regime, several spatially separated parties share a multipartite quantum system, and the most natural set of ...
Xuanqiang Zhao +4 more
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Detecting and quantifying entanglement on near-term quantum devices
npj Quantum Information, 2022 Quantum entanglement is a key resource in quantum technology, and its quantification is a vital task in the current noisy intermediate-scale quantum (NISQ) era.
Kun Wang +4 more
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Pulse-Engineered Controlled-V Gate and Its Applications on Superconducting Quantum Device
IEEE Transactions on Quantum Engineering, 2022 In this article, we demonstrate that, by employing the OpenPulse design kit for IBM superconducting quantum devices, the controlled-V gate (cv gate) can be implemented in about half the gate time to the controlled-X gate (cx or cnot gate) and ...
Takahiko Satoh +3 more
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npj Computational Materials, 2021 A quantum chemistry study of the first singlet (S 1) and triplet (T 1) excited states of phenylsulfonyl-carbazole compounds, proposed as useful thermally activated delayed fluorescence (TADF) emitters for organic light emitting diode (OLED) applications,
Qi Gao +9 more
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F-Divergences and Cost Function Locality in Generative Modelling with Quantum Circuits
Entropy, 2021 Generative modelling is an important unsupervised task in machine learning. In this work, we study a hybrid quantum-classical approach to this task, based on the use of a quantum circuit born machine. In particular, we consider training a quantum circuit
Chiara Leadbeater +3 more
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SU(2) hadrons on a quantum computer via a variational approach
Nature Communications, 2021 Quantum simulations of lattice gauge theories are in principle scalable, but their extension to dynamically coupled matter has proven difficult. In this work, the authors use a variational quantum eigensolver to simulate a non-Abelian LGT including the ...
Yasar Y. Atas +5 more
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npj Quantum Information, 2022 Spin chains have long been considered an effective medium for long-range interactions, entanglement generation, and quantum state transfer. In this work, we explore the properties of a spin chain implemented with superconducting flux circuits, designed ...
D. M. Tennant +22 more
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Simultaneous Execution of Quantum Circuits on Current and Near-Future NISQ Systems
IEEE Transactions on Quantum Engineering, 2022 In the noisy intermediate-scale quantum (NISQ) era, the idea of quantum multiprogramming, running multiple quantum circuits (QCs) simultaneously on the same hardware, helps to improve the throughput of quantum computation.
Yasuhiro Ohkura +2 more
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Laser annealing heals radiation damage in avalanche photodiodes
EPJ Quantum Technology, 2017 Avalanche photodiodes (APDs) are a practical option for space-based quantum communications requiring single-photon detection. However, radiation damage to APDs significantly increases their dark count rates and thus reduces their useful lifetimes in ...
Jin Gyu Lim +5 more
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