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We study quantum algorithms based on quantum (sub)gradient estimation using noisy function evaluation oracles, and demonstrate the first dimension-independent query complexities (up to poly-logarithmic factors) for zeroth-order convex…

We introduce a method that automatically and jointly updates both continuous and discrete parameters of a compound lens design, to improve its performance in terms of sharpness, speed, or both. Previous methods for compound lens design use…

Graphics · Computer Science 2025-09-30 Arjun Teh , Delio Vicini , Bernd Bickel , Ioannis Gkioulekas , Matthew O'Toole

Effective models to describe the dynamics of an open cavity have been extensively discussed in the literature. In many of these models the cavity leakage to the outside is treated as a loss introduced phenomenologically. In contrast to…

Quantum Physics · Physics 2024-10-10 Astghik Saharyan , Juan-Rafael Álvarez , Axel Kuhn , Stéphane Guérin

Large single-atom cooperativity in quantum systems is important for quantum information processing. Here, we propose to exponentially enhance the single-atom cooperativity parameter by exploiting the strongly localized effect of modes in…

Quantum Physics · Physics 2025-09-08 Qian Bin , Ying Wu , Jin-Hua Gao , Aixi Chen , Franco Nori , Xin-You Lü

An array of $N$ closely spaced dipole coupled quantum emitters exhibits super- and subradiance with characteristic tailorable spatial radiation patterns. Optimizing their geometry and distance with respect to the spatial profile of a near…

Quantum Physics · Physics 2019-03-08 David Plankensteiner , Christian Sommer , Helmut Ritsch , Claudiu Genes

Recently, gradient index cavities, or so-called transformation cavities, designed by conformal transformation optics have been studied to support resonant modes with both high Q-factors and emission directionality. We propose a new design…

Optics · Physics 2021-04-21 Jung-Wan Ryu , Jinhang Cho

A broad class of hybrid quantum-classical algorithms known as "variational algorithms" have been proposed in the context of quantum simulation, machine learning, and combinatorial optimization as a means of potentially achieving a quantum…

Quantum Physics · Physics 2021-04-09 Aram Harrow , John Napp

Exploring the dynamics of an optically levitated dielectric micro- and nanoparticle is an exciting new subject in quantum science. Recent years have witnessed rapid advancements in attaining quantum-limited optical detection and control of…

Optics · Physics 2025-04-22 Seyed Khalil Alavi , Zijie Sheng , Haneul Lee , Hansuek Lee , Sungkun Hong

Highly reflecting mechanically compliant membranes based on photonic-crystal patterns have recently gained increasing attention within cavity optomechanics due to their prospects of reaching high coupling rates in membrane-in-the-middle…

Optics · Physics 2024-03-07 Georg Enzian , Eugene S. Polzik , Alexander K. Tagantsev

We propose to turn two resonant distant cavities effectively into one by coupling them via an optical fiber which is coated with two-level atoms [Franson et al., Phys. Rev. A 70, 062302 (2004)]. The purpose of the atoms is to destructively…

Quantum Physics · Physics 2015-05-19 Jonathan Busch , Almut Beige

Optical cavities are an enabling technology of modern quantum science: from their essential role in the operation of lasers, to applications as fly-wheels in atomic clocks and interaction-enhancing components in quantum optics experiments,…

Optics · Physics 2021-08-04 Matt Jaffe , Lukas Palm , Claire Baum , Lavanya Taneja , Jonathan Simon

Evolutionary algorithms have been used in the digital art scene since the 1970s. A popular application of genetic algorithms is to optimize the procedural placement of vector graphic primitives to resemble a given painting. In recent years,…

Neural and Evolutionary Computing · Computer Science 2022-01-31 Yingtao Tian , David Ha

Nonclassical phenomena can be enhanced by introducing $q$-deformation in optomechanical systems. This motivates investigation of the optical response in a $q$-deformed linearly coupled optomechanical system. The system consists of two…

Quantum Physics · Physics 2022-09-21 Akash Kundu , Jarosław A. Miszczak

We present a monolithic semiconductor microcavity design for enhanced light-matter interaction and photon extraction efficiency of an embedded quantum emitter such as a quantum dot or color center. The microcavity is a hemispherical…

Applied Physics · Physics 2019-05-27 G. C. Ballesteros , C. Bonato , B. D. Gerardot

We introduce the spin dissymmetry factor, a measure of the spin-selectivity in the optical transition rate of quantum particles. This spin dissymmetry factor is valid locally, including at material interfaces and within optical cavities. We…

A landmark result of non-smooth convex optimization is that gradient descent is an optimal algorithm whenever the number of computed gradients is smaller than the dimension $d$. In this paper we study the extension of this result to the…

Optimization and Control · Mathematics 2021-01-15 Sébastien Bubeck , Qijia Jiang , Yin Tat Lee , Yuanzhi Li , Aaron Sidford

Strong light interaction with a subwavelength object has been a long pursuing goal with difficulties mainly arising from the diffraction limit. We propose a high finesse cavity with one mirror made of a subwavelength resonant particle as a…

Optics · Physics 2021-04-26 Z. Xi , H. P. Urbach

When cavity photons couple to an optical fiber with a continuum of modes, they usually leak out within a finite amount of time. However, if the fiber is about one meter long and linked to a mirror, photons bounce back and forth within the…

Quantum Physics · Physics 2012-02-15 Elica S. Kyoseva , Almut Beige , Leong Chuan Kwek

By modifying the density of optical states at the location of an emitter, weak cavity-emitter coupling can enable a host of potential applications in quantum optics, from the development of low- threshold lasers to brighter single-photon…

Optics · Physics 2011-11-03 Kasey J. Russell , Tsung-Li Liu , Shanying Cui , Evelyn L. Hu

Neutral atom arrays and optical cavity QED systems have developed in parallel as central pillars of modern experimental quantum science. While each platform has demonstrated exceptional capabilities-such as high-fidelity quantum logic in…