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Two-dimensional photonic crystal membranes provide a versatile planar architecture for integrated photonics to control the propagation of light on a chip employing high quality optical cavities, waveguides, beamsplitters or dispersive…

In optomechanics, electromagnetic fields are harnessed to control a single mode of a mechanically compliant system, while other mechanical degrees of freedom remain unaffected due to the modes' mutual orthogonality and high quality factor.…

量子物理 · 物理学 2020-07-22 Martin Frimmer , Jan Gieseler , Lukas Novotny

We demonstrate a new optomechanical device system which allows highly efficient transduction of femtogram nanobeam resonators. Doubly clamped nanomechanical resonators with mass as small as 25 fg are embedded in a high-finesse…

光学 · 物理学 2012-06-20 Xiankai Sun , Jiangjun Zheng , Menno Poot , Chee Wei Wong , Hong X. Tang

The absence of inversion symmetry leads to a strong spin-orbit splitting of the upper valence band of semiconducting single layer transition metal dichalchogenides such as MoS$_2$ or WS$_2$. This permits a direct comparison of the…

We describe an optomechanical device consisting of a fiber-based optical cavity containing a silicon nitiride membrane. In comparison with typical free-space cavities, the fiber-cavity's small mode size (10 {\mu}m waist, 80 {\mu}m length)…

Phonon lasers, as the counterpart of photonic lasers, have been intensively studied in a large variety of systems, however, (all) most of them are based on the directly coherent pumping. Intuitively, dissipation is an unfavorable factor for…

光学 · 物理学 2021-10-26 Qiankun Zhang , Cheng Yang , Jiteng Sheng , Haibin Wu

Nanobeam optomechanical crystals, in which localized GHz frequency mechanical modes are coupled to wavelength-scale optical modes, are being employed in a variety of experiments across different material platforms. Here, we demonstrate the…

应用物理 · 物理学 2018-07-12 Karen E. Grutter , Marcelo Davanço , Krishna C. Balram , Kartik Srinivasan

A dielectric body couples with electromagnetic fields through radiation pressure and electrostrictive forces, which mediate phonon-photon coupling in cavity optomechanics. In a magnetic medium, according to Korteweg-Helmholtz formula,…

量子物理 · 物理学 2015-11-17 Xufeng Zhang , Chang-Ling Zou , Liang Jiang , Hong X. Tang

Analyzing the scattering and conversion process between photons and phonons coupled via radiation pressure in a circular quantum dot on a honeycomb array of optomechanical cells, we demonstrate the emergence of optomechanical Dirac physics.…

介观与纳米尺度物理 · 物理学 2017-08-31 Christian Wurl , Holger Fehske

We study the pairing of fermions in a one-dimensional lattice of tunable double-well potentials using radio-frequency spectroscopy. The spectra reveal the coexistence of two types of atom pairs with different symmetries. Our measurements…

量子气体 · 物理学 2018-03-07 J. Kangara , Chingyun Cheng , S. Pegahan , I. Arakelyan , J. E. Thomas

Nanostructured graphene on SiO2 substrates pave the way for enhanced light-matter interactions and explorations of strong plasmon-phonon hybridization in the mid-infrared regime. Unprecedented large-area graphene nanodot and antidot optical…

介观与纳米尺度物理 · 物理学 2014-05-15 Xiaolong Zhu , Weihua Wang , Wei Yan , Martin B. Larsen , Peter Bøggild , Thomas Garm Pedersen , Sanshui Xiao , Jian Zi , N. Asger Mortensen

We report the experimental demonstration of converting coherent optical fields between two different optical wavelengths by coupling two optical modes to a mechanical breathing mode in a silica resonator. The experiment is based on an…

量子物理 · 物理学 2012-05-11 Chunhua Dong , Victor Fiore , Mark C. Kuzyk , Lin Tian , Hailin Wang

We investigate the absorption and transmission properties of a weak probe field in an atom opto-magnomechanics system. The system comprises an assembly of two-level atoms and a magnon mode within a ferrimagnetic crystal, which directly…

量子物理 · 物理学 2024-12-10 Wenting Diao , Xi Wang , Ke Di , Yu Liu , Anyu Cheng , Chunxiao Cai , Wenhai Yang , Jiajia Du

We present an experimental study of an optomechanical system formed by a vibrating thin semi-transparent membrane within a high-finesse optical cavity. We show that the coupling between the optical cavity modes and the vibrational modes of…

量子物理 · 物理学 2012-12-27 M. Karuza , M. Galassi , C. Biancofiore , C. Molinelli , R. Natali , P. Tombesi , G. Di Giuseppe , D. Vitali

A major trend within the field of cavity QED is to boost the interaction strength between the cavity field and the atomic internal degrees of freedom of the trapped atom by decreasing the mode volume of the cavity. In such systems, it is…

量子物理 · 物理学 2018-08-29 Lukas Neumeier , Darrick E. Chang

We propose an optomechanical dissipation engineering scheme by introducing an ancillary mechanical mode with a large decay rate to control the density of states of the optical mode. The effective linewidth of the optical mode can be reduced…

The resonant enhancement of mechanical and optical interaction in optomechanical cavities enables their use as extremely sensitive displacement and force detectors. In this work we demonstrate a hybrid magnetometer that exploits the…

The effects of quantum lattice fluctuations on the Peierls transition and the optical conductivity in the one-dimensional Holstein model of spinless fermions have been studied by developing an analytical approach, based on the unitary…

强关联电子 · 物理学 2009-11-07 Qin Wang , Hang Zheng , M. Avignon

We present a theoretical description of the coupling between longitudinal optical phonons and collective excitations of a two-dimensional electron gas. By diagonalizing the Hamiltonian of the system, including Coulomb electron-electron and…

介观与纳米尺度物理 · 物理学 2020-02-21 Sofia Ribeiro , Angela Vasanelli , Yanko Todorov , Carlo Sirtori

Optomechanical crystals (OMCs) enable coherent interactions between optical photons and microwave acoustic phonons, and represent a platform for implementing quantum transduction between microwave and optical signals. Optical…