Results 21 to 30 of about 11,948,985 (352)
Optimal Quantum Phase Estimation [PDF]
Physical Review Letters, 2009 By using a systematic optimization approach we determine quantum states of light with definite photon number leading to the best possible precision in optical two mode interferometry. Our treatment takes into account the experimentally relevant situation of photon losses.
Dorner, U +6 more
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Phase Diagram of Optimal Paths [PDF]
Physical Review Letters, 2004 We show that choosing appropriate distributions of the randomness, the search for optimal paths links diverse problems of disordered media like directed percolation, invasion percolation, directed and non-directed spanning polymers. We also introduce a simple and efficient algorithm, which solves the d-dimensional model numerically in order N^(1+d_f/d)
Hansen, Alex, Kertesz, Janos
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Glassy Phase of Optimal Quantum Control [PDF]
Physical Review Letters, 2019 We study the problem of preparing a quantum many-body system from an initial to a target state by optimizing the fidelity over the family of bang-bang protocols. We present compelling numerical evidence for a universal spin-glass-like transition controlled by the protocol time duration.
Day, Alexandre G. R. +4 more
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Robust phase unwrapping by convex optimization [PDF]
2014 IEEE International Conference on Image Processing (ICIP), 2014 The 2-D phase unwrapping problem aims at retrieving a "phase" image from its modulo $2π$ observations. Many applications, such as interferometry or synthetic aperture radar imaging, are concerned by this problem since they proceed by recording complex or modulated data from which a "wrapped" phase is extracted. Although 1-D phase unwrapping is trivial,
Gonzalez Gonzalez, Adriana +2 more
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Optimal phase description of chaotic oscillators [PDF]
Physical Review E, 2012 We introduce an optimal phase description of chaotic oscillations by generalizing the concept of isochrones. On chaotic attractors possessing a general phase description, we define the optimal isophases as Poincaré surfaces showing return times as constant as possible.
Schwabedal, Justus T. C. +3 more
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Near-Optimal Bounds for Phase Synchronization [PDF]
SIAM Journal on Optimization, 2018 The problem of phase synchronization is to estimate the phases (angles) of a complex unit-modulus vector $z$ from their noisy pairwise relative measurements $C = zz^* + σW$, where $W$ is a complex-valued Gaussian random matrix. The maximum likelihood estimator (MLE) is a solution to a unit-modulus constrained quadratic programming problem, which is ...
Yiqiao Zhong, Nicolas Boumal
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C-3PO: Cyclic-Three-Phase Optimization for Human-Robot Motion Retargeting based on Reinforcement Learning [PDF]
IEEE International Conference on Robotics and Automation, 2019 Motion retargeting between heterogeneous polymorphs with different sizes and kinematic configurations requires a comprehensive knowledge of (inverse) kinematics. Moreover, it is non-trivial to provide a kinematic independent general solution.
Taewoo Kim, Joo-Haeng Lee
semanticscholar +1 more source
A three phase optimization method for precopy based VM live migration. [PDF]
Springerplus, 2016 Virtual machine live migration is a method of moving virtual machine across hosts within a virtualized datacenter. It provides significant benefits for administrator to manage datacenter efficiently.
Sharma S, Chawla M.
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Optimized Phase Scrambling for RF Phase Encoding
Journal of Magnetic Resonance, Series B, 1994 link_to_subscribed_fulltext
Hilal, SK, Wu, EX, Johnson, G
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Energies, 2021 In this paper, the design procedure and optimization process of a multi-phase flux-switching permanent magnet (FSPM) generator for wind power generation system is investigated.
Feng Li, Xiaoyong Zhu
doaj +1 more source