منابع مشابه
Robust Adaptive Quantum Phase Estimation
Quantum parameter estimation is central to many fields such as quantum computation, communications and metrology. Optimal estimation theory has been instrumental in achieving the best accuracy in quantum parameter estimation, which is possible when we have very precise knowledge of and control over the model. However, uncertainties in key parameters underlying the system are unavoidable and may...
متن کاملRobust Guaranteed-Cost Adaptive Quantum Phase Estimation
Shibdas Roy, ∗ Dominic W. Berry, † Ian R. Petersen, ‡ and Elanor H. Huntington 4, § Department of Electrical and Computer Engineering, National University of Singapore, Singapore Department of Physics and Astronomy, Macquarie University, Sydney Research School of Engineering, Australian National University, Canberra Centre for Quantum Computation and Communication Technology, Australian Researc...
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This paper presents a new observer design methodology for a time varying actuator fault estimation. A new linear matrix inequality (LMI) design algorithm is developed to tackle the limitations (e.g. equality constraint and robustness problems) of the well known so called fast adaptive fault estimation observer (FAFE). The FAFE is capable of estimating a wide range of time-varying actuator fault...
متن کاملControlling Adaptive Quantum-Phase Estimation with Scalable Reinforcement Learning
We develop a reinforcement-learning algorithm to construct a feedback policy that delivers quantum-enhanced interferometric-phase estimation up to 100 photons in a noisy environment. We ensure scalability of the calculations by distributing the workload in a cluster and by vectorizing time-critical operations. We also improve running time by introducing accept-reject criteria to terminate calcu...
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Quantum parameter estimation has many applications, from gravitational wave detection to quantum key distribution. The most commonly used technique for this type of estimation is quantum filtering, using only past observations. We present the first experimental demonstration of quantum smoothing, a time-symmetric technique that uses past and future observations, for quantum parameter estimation...
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ژورنال
عنوان ژورنال: New Journal of Physics
سال: 2015
ISSN: 1367-2630
DOI: 10.1088/1367-2630/17/6/063020