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Optical frequency combs are increasingly used in applications such as optical communications, radio signal processing, and dual-comb spectroscopy. Many of these applications require a broad, flat spectrum with tunable center wavelength and…

光学 · 物理学 2025-05-06 Yijia Cai , Zhixin Liu

A new strategy for trapping quantum particles is presented, which behaves like an effective harmonic oscillator potential trap wherever is desired. The approach is based on harmonic contraction and expansion of the system around a fixed…

量子物理 · 物理学 2019-03-14 Sebastián Carrasco , José Rogan , Juan Alejandro Valdivia

In this paper we study cavity optomechanical systems in which the position of a mechanical oscillator modulates both the resonance frequency (dispersive coupling) and the linewidth (dissipative coupling) of a cavity mode. Using a quantum…

量子物理 · 物理学 2013-05-21 Talitha Weiss , Christoph Bruder , Andreas Nunnenkamp

In this paper we theoretically demonstrate the tunability of the Casimir force both in sign and magnitude between parallel plates coated with dispersive materials. We show that this force, existing between uncharged plates, can be tuned by…

量子物理 · 物理学 2022-06-15 Miguel Camacho , Tao Gong , Benjamin Spreng , Iñigo Liberal , Nader Engheta , Jeremy N. Munday

Spontaneous dynamic systems have attracted significant attention for their rich underlying physics such as phase-locking and synchronization. In this work, we report a new mechanism of generating magnetic spontaneous oscillation via…

Characterization of noise of a quantum harmonic oscillator is important for many experimental platforms. We experimentally demonstrate motional spin-locking spectroscopy, a method that allows us to directly measure the motional noise…

A common use for atomic force microscopy is to quantify local forces through tip-sample interactions between the probe tip and a sample surface. The accuracy of these measurements depends on the accuracy to which the cantilever spring…

介观与纳米尺度物理 · 物理学 2021-12-08 Aaron Mascaro , Yoichi Miyahara , Omur E. Dagdeviren , Peter Grutter

A flexible wave localization is investigated using a spatial-temporal modulation of point defects along the periodic array of electromechanical local resonators of a piezoelectric bimorph beam. By changing the electrical resonance of…

应用物理 · 物理学 2022-02-01 Renan Lima Thomes , Danilo Beli , Carlos De Marqui

Optomechanics and electromechanics have made it possible to prepare macroscopic mechanical oscillators in their quantum ground states, in quadrature squeezed states, and in entangled states of motion. In addition to coaxing ever larger and…

量子物理 · 物理学 2021-03-31 Xizheng Ma , Jeremie J. Viennot , Shlomi Kotler , John D. Teufel , Konrad W. Lehnert

Accurate measurements of the nanoscale electromechanical coupling in materials, including piezo and ferroelectrics, twisted 2D layers, and biological systems is of both fundamental scientific and applied importance. Piezoresponse Force…

介观与纳米尺度物理 · 物理学 2023-10-10 Roger Proksch , Ryan Wagner , Joel Lefever

Dynamically tunable nanoengineered structures for coloration show promising applications in sensing, displays, and communication. However, their potential challenge remains in having a scalable manufacturing process over large scales in…

介观与纳米尺度物理 · 物理学 2025-04-09 Renu Raman Sahu , Alwar Samy Ramasamy , Santosh Bhonsle S , Mark Vailshery D C , Tapajyoti Das Gupta

In this brief, we present a low-loss mechanically reconfigurable phase shifter implemented in gap-waveguide technology for mm-wave frequencies. The proposed design gives a practical implementation of tuning elements inside the waveguide…

信号处理 · 电气工程与系统科学 2021-01-06 Á. Palomares-Caballero , A. Alex-Amor , P. Escobedo , J. Valenzuela-Valdés , P. Padilla

This work presents a tunable varactor with tunability in the range of 100s of MHz and a capacitance delta of about 36 pF by employing a perpendicular magnetic field to a capacitively-coupled (CCP) RF plasma cell. A comprehensive…

等离子体物理 · 物理学 2026-04-10 Samsud Moon

Visible-wavelength very large-scale integration (VLSI) photonic circuits have potential to play important roles in quantum information and sensing technologies. The realization of scalable, high-speed, and low-loss photonic mesh circuits…

When a micro cantilever with a nano-scale tip is manipulated on a substrate with atomic-scale roughness, the periodic lateral frictional force and stochastic fluctuations may induce stick-slip motion of the cantilever tip, which greatly…

介观与纳米尺度物理 · 物理学 2012-04-09 Jing Zhang , Re-Bing Wu , Lei Miao , Ning Xi , Chun-Wen Li , Yue-Chao Wang , Tzyh-Jong Tarn

Hybrid spin-mechanical setups offer a versatile platform for quantum science and technology, but improving the spin-phonon as well as the spin-spin couplings of such systems remains a crucial challenge. Here, we propose and analyze an…

量子物理 · 物理学 2020-10-14 Peng-Bo Li , Yuan Zhou , Wei-Bo Gao , Franco Nori

In this paper, we study the behaviour of a microcantilever beam under electrostatic actuation using finite difference method. This problem has a lot of applications in MEMS based devices like accelerometers, switches and others. In this…

其他计算机科学 · 计算机科学 2007-11-29 W. Faris , H. Mohammed , M. M. Abdalla , C. -H. Ling

We continuously observe dynamical decoupling in a spin-1 quantum gas using a weak optical measurement of spin precession. Continuous dynamical decoupling aims to dramatically modify the character and energy spectrum of spin states to render…

量子气体 · 物理学 2018-01-24 R. P. Anderson , M. J. Kewming , L. D. Turner

Fano resonance exhibiting an asymmetric spectral line shape is a universal phenomenon observed in diverse physical systems. Here we experimentally establish a direct link between the spectral asymmetry parameter and a physically realizable…

光学 · 物理学 2019-09-11 Subir K. Ray , Ankit K. Singh , Ajmal , Shubham Chandel , Partha Mitra , Nirmalya Ghosh

Continuously and widely tunable lasers actively stabilized on a frequency reference are broadly employed in atomic, molecular and optical (AMO) physics. The frequency-stabilized optical frequency comb (OFC) provides a novel optical…

原子物理 · 物理学 2024-03-05 Ze-Min Shen , Xiao-Long Zhou , Dong-Yu Huang , Yu-Hao Pan , Li Li , Jian Wang , Chuan-Feng Li , Guang-Can Guo