Results 31 to 40 of about 3,047,990 (260)
Non-Boolean quantum amplitude amplification and quantum mean estimation
Quantum Information Processing, 2023 This paper generalizes the quantum amplitude amplification and amplitude estimation algorithms to work with non-boolean oracles. The action of a non-boolean oracle $U_φ$ on an eigenstate $|x\rangle$ is to apply a state-dependent phase-shift $φ(x)$. Unlike boolean oracles, the eigenvalues $\exp(iφ(x))$ of a non-boolean oracle are not restricted to be ...
openaire +3 more sources
Optimal frequency measurements with quantum probes
npj Quantum Information, 2021 Precise frequency measurements are important in applications ranging from navigation and imaging to computation and communication. Here we outline the optimal quantum strategies for frequency discrimination and estimation in the context of quantum ...
Simon Schmitt +9 more
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Average-Case Verification of the Quantum Fourier Transform Enables Worst-Case Phase Estimation [PDF]
Quantum, 2022 The quantum Fourier transform (QFT) is a key primitive for quantum computing that is typically used as a subroutine within a larger computation, for instance for phase estimation.
Noah Linden, Ronald de Wolf
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Efficient State Preparation for Quantum Amplitude Estimation [PDF]
Physical Review Applied, 2021 12 pages, 12 ...
Almudena Carrera Vazquez, Stefan Woerner
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Harnessing Bayesian Statistics to Accelerate Iterative Quantum Amplitude Estimation [PDF]
QuantumWe establish a unified statistical framework that underscores the crucial role statistical inference plays in Quantum Amplitude Estimation (QAE), a task essential to fields ranging from chemistry to finance and machine learning.
Qilin Li +3 more
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Remote State Design for Efficient Quantum Metrology with Separable and Non-Teleporting States
Quantum Reports, 2021 Measurements leading to the collapse of states and the non-local quantum correlations are the key to all applications of quantum mechanics as well as in the studies of quantum foundation.
Rahul Raj +2 more
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Efficient amplitude-modulated pulses for triple- to single-quantum coherence conversion in MQMAS NMR [PDF]
, 2014 We thank EPSRC (EP/E041825/1 and EP/J501542/1) for support, for the award of a studentship to H.C. We also thank the ERC (EU FP7 Consolidator Grant 614290 “EXONMR”).The conversion between multiple- and single-quantum coherences is integral to many ...
Dawson, Daniel M +5 more
core +1 more source
Quantum-assisted Monte Carlo algorithms for fermions [PDF]
Quantum, 2023 Quantum computing is a promising way to systematically solve the longstanding computational problem, the ground state of a many-body fermion system. Many efforts have been made to realise certain forms of quantum advantage in this problem, for instance ...
Xiaosi Xu, Ying Li
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Improved maximum-likelihood quantum amplitude estimation [PDF]
, 2023 Quantum amplitude estimation is a key subroutine in a number of powerful quantum algorithms, including quantum-enhanced Monte Carlo simulation and quantum machine learning.
Browne, Dan E., Callison, Adam
core +1 more source
PRX Quantum, 2022 Under suitable assumptions, some recently developed quantum algorithms can estimate the ground-state energy and prepare the ground state of a quantum Hamiltonian with near-optimal query complexities. However, this is based on a block-encoding input model
Yulong Dong, Lin Lin, Yu Tong
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