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Closed-loop control of an amplifier flow is experimentally investigated. A feed-forward algorithm is implemented to control the flow downstream a backward-facing step. Upstream and downstream data are extracted from real-time velocity…

Fluid Dynamics · Physics 2014-03-25 Nicolas Gautier , Jean-Luc Aider

We show how to construct a near deterministic CNOT using several single photons sources, linear optics, photon number resolving quantum non-demolition detectors and feed-forward. This gate does not require the use of massively entangled…

Quantum Physics · Physics 2009-11-10 Kae Nemoto , W. J. Munro

When upgrading neural models to a newer version, new errors that were not encountered in the legacy version can be introduced, known as regression errors. This inconsistent behavior during model upgrade often outweighs the benefits of…

Computation and Language · Computer Science 2023-02-07 Yi-An Lai , Elman Mansimov , Yuqing Xie , Yi Zhang

Outcome probability estimation via classical methods is an important task for validating quantum computing devices. Outcome probabilities of any quantum circuit can be estimated using Monte Carlo sampling, where the amount of negativity…

Quantum Physics · Physics 2022-10-14 Nikolaos Koukoulekidis , Hyukjoon Kwon , Hyejung H. Jee , David Jennings , M. S. Kim

Feedforward steering control is a key component of hierarchical control architectures for autonomous racing. The goal is to reduce steering corrections from the feedback controllers by predicting the vehicle's inverse lateral dynamics. This…

Robotics · Computer Science 2026-05-21 Georg Jank , Mattia Piccinini , Sebastian Wenk , Phillip Pitschi , Johannes Betz , Boris Lohmann

Several authors have reported that the echo state network reproduces bifurcation diagrams of some nonlinear differential equations using the data for a few control parameters. We demonstrate that a simpler feedforward neural network can…

Chaotic Dynamics · Physics 2024-09-13 Hidetsugu Sakaguchi

In continuous-variable quantum computation, identifying key elements that enable a quantum computational advantage is a long-standing issue. Starting from the standard results on the necessity of Wigner negativity, we develop a…

Quantum Physics · Physics 2025-03-12 Massimo Frigerio , Antoine Debray , Nicolas Treps , Mattia Walschaers

We present a method for computing the action of conditional linear optical transformations, conditioned on photon counting, for arbitrary signal states. The method is based on the Q-function, a quasi probability distribution for anti…

Quantum Physics · Physics 2015-06-26 G. J. Milburn

Quantum labeling tasks ask one to recover the missing associations between classical outcome labels and the effects forming the POVM. We study labeling in the multiple-shot regime, allowing a finite number of uses of the device and the most…

Quantum Physics · Physics 2026-04-02 Seyed Arash Ghoreishi , Nidhin Sudarsanan Ragini , Sk Sazim , Mario Ziman

We propose probabilistic controlled-NOT and controlled-phase gates for qubits stored in the polarization of photons. The gates are composed of linear optics and photon detectors, and consume polarization entangled photon pairs. The fraction…

Quantum Physics · Physics 2009-11-07 Masato Koashi , Takashi Yamamoto , Nobuyuki Imoto

Rotary motors, such as hybrid stepper motors (HSMs), are widely used in industries varying from printing applications to robotics. The increasing need for productivity and efficiency without increasing the manufacturing costs calls for…

Systems and Control · Electrical Eng. & Systems 2024-01-25 Daiwei Fan , Max Bolderman , Sjirk Koekebakker , Hans Butler , Mircea Lazar

In this paper, we consider a method for implementing a quantum logic gate with photons whose wave function propagates in a one-dimensional Kerr-nonlinear photonic crystal. The photonic crystal causes the incident photons to undergo Bragg…

Quantum Physics · Physics 2011-11-09 Hiroo Azuma

In this paper, we compare different metrics to predict the error rate of optical systems based on nonbinary forward error correction (FEC). It is shown that the correct metric to predict the performance of coded modulation based on…

Information Theory · Computer Science 2016-10-26 Laurent Schmalen , Alex Alvarado , Rafael Rios-Müller

PID control is commonly utilized in an active suspension system to achieve desirable chassis attitude, where, due to delays, feedback information has much difficulty regulating the roll and pitch behavior, and stabilizing the chassis…

Systems and Control · Electrical Eng. & Systems 2022-03-09 Zilin Feng , Min Yu , Simos A. Evangelou , Imad M Jaimoukha , Daniele Dini

It is well known that the maximal success probability of the binary quantum communication can be improved by using a sub-Poissonian non-standard coherent state as an information carrier. In the present article, we consider the quantum…

Quantum Physics · Physics 2022-05-04 Min Namkung , Jeong San Kim

The reliable, deterministic production of trustworthy high-quality single photons is a critical component of discrete variable, optical quantum technology. For single-photon based fully error-corrected quantum computing systems, it is…

Quantum Physics · Physics 2024-11-20 Sebastian Brandhofer , Casey R. Myers , Simon J. Devitt , Ilia Polian

Linear approximation commonly used in solving alternating-current optimal power flow (AC-OPF) simplifies the system models but incurs accumulated voltage errors in large power networks. Such errors will make the primal-dual type gradient…

Optimization and Control · Mathematics 2023-06-08 Heng Liang , Xinyang Zhou , Changhong Zhao

We present a systematic analysis how one can improve performance of probabilistic programmable quantum processors. We generalize a simple Vidal-Masanes-Cirac processor that realizes U(1) rotations on a qubit with the phase of the rotation…

Quantum Physics · Physics 2009-11-10 Mark Hillery , Mario Ziman , Vladimir Buzek

The maximum operational range of continuous variable quantum key distribution protocols has shown to be improved by employing high-efficiency forward error correction codes. Typically, the secret key rate model for such protocols is…

Composite adaptive radial basis function neural network (RBFNN) control with a lattice distribution of hidden nodes has three inherent demerits: 1) the approximation domain of adaptive RBFNNs is difficult to be determined a priori; 2) only…

Systems and Control · Electrical Eng. & Systems 2021-04-23 Qiong Liu , Dongyu Li , Shuzhi Sam Ge , Zhong Ouyang