Search Results - "Coles, Patrick J."
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Noise-induced barren plateaus in variational quantum algorithms
Published in Nature communications (29-11-2021)“…Variational Quantum Algorithms (VQAs) may be a path to quantum advantage on Noisy Intermediate-Scale Quantum (NISQ) computers. A natural question is whether…”
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2
Cost function dependent barren plateaus in shallow parametrized quantum circuits
Published in Nature communications (19-03-2021)“…Variational quantum algorithms (VQAs) optimize the parameters θ of a parametrized quantum circuit V ( θ ) to minimize a cost function C . While VQAs may enable…”
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3
Noise resilience of variational quantum compiling
Published in New journal of physics (01-04-2020)“…Variational hybrid quantum-classical algorithms (VHQCAs) are near-term algorithms that leverage classical optimization to minimize a cost function, which is…”
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4
Learning the quantum algorithm for state overlap
Published in New journal of physics (14-11-2018)“…Short-depth algorithms are crucial for reducing computational error on near-term quantum computers, for which decoherence and gate infidelity remain important…”
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Absence of Barren Plateaus in Quantum Convolutional Neural Networks
Published in Physical review. X (01-10-2021)“…Quantum neural networks (QNNs) have generated excitement around the possibility of efficiently analyzing quantum data. But this excitement has been tempered by…”
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Generalization in quantum machine learning from few training data
Published in Nature communications (22-08-2022)“…Modern quantum machine learning (QML) methods involve variationally optimizing a parameterized quantum circuit on a training data set, and subsequently making…”
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7
Barren Plateaus Preclude Learning Scramblers
Published in Physical review letters (12-05-2021)Get full text
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Numerical approach for unstructured quantum key distribution
Published in Nature communications (20-05-2016)“…Quantum key distribution (QKD) allows for communication with security guaranteed by quantum theory. The main theoretical problem in QKD is to calculate the…”
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9
Variational consistent histories as a hybrid algorithm for quantum foundations
Published in Nature communications (31-07-2019)“…Although quantum computers are predicted to have many commercial applications, less attention has been given to their potential for resolving foundational…”
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Practical Hamiltonian learning with unitary dynamics and Gibbs states
Published in Nature communications (08-01-2024)“…We study the problem of learning the parameters for the Hamiltonian of a quantum many-body system, given limited access to the system. In this work, we build…”
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11
Uncertainty relations from simple entropic properties
Published in Physical review letters (23-05-2012)“…Uncertainty relations provide constraints on how well the outcomes of incompatible measurements can be predicted, and as well as being fundamental to our…”
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12
Variational quantum state diagonalization
Published in npj quantum information (26-06-2019)“…Variational hybrid quantum-classical algorithms are promising candidates for near-term implementation on quantum computers. In these algorithms, a quantum…”
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13
Self-Referenced Continuous-Variable Quantum Key Distribution Protocol
Published in Physical review. X (21-10-2015)“…We introduce a new continuous-variable quantum key distribution (CV-QKD) protocol, self-referenced CV-QKD, that eliminates the need for transmission of a…”
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14
Out-of-distribution generalization for learning quantum dynamics
Published in Nature communications (05-07-2023)“…Generalization bounds are a critical tool to assess the training data requirements of Quantum Machine Learning (QML). Recent work has established guarantees…”
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15
Variational quantum state eigensolver
Published in npj quantum information (21-09-2022)“…Extracting eigenvalues and eigenvectors of exponentially large matrices will be an important application of near-term quantum computers. The variational…”
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Variational quantum eigensolver with reduced circuit complexity
Published in npj quantum information (12-08-2022)“…The variational quantum eigensolver (VQE) is one of the most promising algorithms to find eigenstates of a given Hamiltonian on noisy intermediate-scale…”
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17
Sifting attacks in finite-size quantum key distribution
Published in New journal of physics (29-04-2016)“…A central assumption in quantum key distribution (QKD) is that Eve has no knowledge about which rounds will be used for parameter estimation or key…”
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18
Quantum preparation uncertainty and lack of information
Published in New journal of physics (20-02-2017)“…The quantum uncertainty principle famously predicts that there exist measurements that are inherently incompatible, in the sense that their outcomes cannot be…”
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Long-time simulations for fixed input states on quantum hardware
Published in npj quantum information (19-11-2022)“…Publicly accessible quantum computers open the exciting possibility of experimental dynamical quantum simulations. While rapidly improving, current devices…”
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20
Trainability of Dissipative Perceptron-Based Quantum Neural Networks
Published in Physical review letters (06-05-2022)“…Several architectures have been proposed for quantum neural networks (QNNs), with the goal of efficiently performing machine learning tasks on quantum data…”
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