Results 51 to 60 of about 30,784 (218)

0.5 V Universal Filter and Quadrature Oscillator Based on Multiple-Input DDTA

IEEE Access, 2023
This paper presents a universal voltage-mode filter and quadrature oscillator based on low-voltage multiple-input differential difference transconductance amplifier (MI-DDTA).
Montree Kumngern, Fabian Khateb, Tomasz Kulej   +2 more
doaj   +1 more source

Non-linear optomechanical measurement of mechanical motion [PDF]

, 2016
Precision measurement of non-linear observables is an important goal in all facets of quantum optics. This allows measurement-based non-classical state preparation, which has been applied to great success in various physical systems, and provides a route
Boisen, A., Bowen, W. P., Brawley, G. A., Larsen, P. E., Schmid, S., Vanner, M. R.   +5 more
core   +3 more sources

Discrete Implementations Modify the Intuition of Final Set Adjustment in Barrier Function Based Control

International Journal of Robust and Nonlinear Control, EarlyView.
ABSTRACT This paper establishes an implementation‐aware framework for Barrier Function Adaptation (BFA) and shows that discrete‐time realizations fundamentally alter the logic of final‐set adjustment. In particular, sufficient conditions are derived to preserve the key benefits of BFA (predefined performance, gain adaptation with uncertain perturbation
Luis Ovalle, Andrés González, Leonid Fridman, Meléndez Alfredo   +3 more
wiley   +1 more source

Observability of radiation pressure shot noise in optomechanical systems

, 2010
We present a theoretical study of an experiment designed to detect radiation pressure shot noise in an optomechanical system. Our model consists of a coherently driven optical cavity mode that is coupled to a mechanical oscillator.
A. Nunnenkamp, B. M. Zwickl, C. Yang, D. F. Walls, J. G. E. Harris, K. Børkje, S. M. Girvin   +6 more
core   +1 more source

Optomechanical Cooling of a Macroscopic Oscillator by Homodyne Feedback [PDF]

, 1998
We propose a simple optomechanical model in which a mechanical oscillator quadrature could be "cooled" well below its equilibrium temperature by applying a suitable feedback to drive the orthogonal quadrature by means of the homodyne current of the ...
A. Barchielli, A. F. Pace, C. K. Law, C. M. Caves, C. W. Gardiner, David Vitali, F. J. Raab, G. Lindblad, H. Casimir, H. M. Wiseman, H. M. Wiseman, H. M. Wiseman, H. M. Wiseman, H. P. Yuen, J. Mertz, P. Tombesi, P. Tombesi, Paolo Tombesi, S. Mancini, Stefano Mancini, V. B. Braginsky, V. B. Braginsky, W. Unruh   +22 more
core   +2 more sources

Iterative Krylov Subspace Methods for Linear Port‐Hamiltonian Systems

Proceedings in Applied Mathematics and Mechanics, Volume 26, Issue 2, June 2026.
ABSTRACT In this work, we present a structure‐preserving Krylov subspace iteration scheme for solving the equation systems that arise from the Gauss integration of linear energy‐conserving and dissipative differential systems (e.g., Poisson systems, gradient systems, and port‐Hamiltonian systems).
Stefan Maier, Nicole Marheineke
wiley   +1 more source

Quantum Theory of Distributed‐Feedback Parametric Amplifiers and Oscillators

Advanced Quantum Technologies, Volume 9, Issue 5, May 2026.
A new class of quantum light source is emerging from optical parametric cavities formed by Bragg reflectors, a so‐called distributed‐feedback design. Such devices are especially promising for quantum technologies such as sensing. Here, an analytic quantum model of these sources reveals their key properties, such as the parametric oscillation threshold,
Alex O.C. Davis, Alex I. Flint
wiley   +1 more source

Spectral Analysis of a Four Mode Cluster State

, 2011
We theoretically evaluate the squeezed joint operators produced in a single optical parametric oscillator which generates quadripartite entangled outputs, as demonstrated experimentally by Pysher et al. \cite{pysher}[Phys. Rev. Lett. 107, 030505 (2011)].
C. W. Gardiner, C. W. Gardiner, C. W. Gardiner, D. F. Walls, M. K. Olsen, M. Pysher, N. C. Menicucci, P. D. Drummond, P. J. Blythe, P. Loock van, P. Walther, R. Raussendorf, S. L. W. Midgley, S. L. W. Midgley, S. L. W. Midgley   +14 more
core   +1 more source

A single trapped ion in a finite range trap [PDF]

, 2005
This paper presents a method to describe dynamics of an ion confined in a realistic finite range trap. We model this realistic potential with a solvable one and we obtain dynamical variables (raising and lowering operators) of this potential. We consider
Cargnelutti, Bruno, Clutton-Brock, Tim, Darwin, Chris, Fitch, W. Tecumseh, McComb, Karen, Reby, David   +5 more
core   +4 more sources

Real‐Time 3D Ultrasound Imaging with an Ultra‐Sparse, Low Power Architecture

Advanced Healthcare Materials, Volume 15, Issue 16, 24 April 2026.
This article presents a novel, ultra‐sparse ultrasound architecture that paves the way for wearable real‐time 3D imaging. By integrating a unique convolutional array with chirped data acquisition, the system achieves high‐resolution volumetric scans at a fraction of the power and hardware complexity.
Colin Marcus, Md Osman Goni Nayeem, Aastha Shah, Jason Hou, Shrihari Viswanath, Maya Eusebio, David Sadat, Anantha P. Chandrakasan, Tolga Ozmen, Canan Dagdeviren   +9 more
wiley   +1 more source