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Optical control of structure-driven magnetic order offers a platform for magneto-optical terahertz devices. We control the magnetic phases of $d^1$ Mott insulating titanates using nonlinear phononics to transiently perturb the atomic…

Materials Science · Physics 2018-07-18 Mingqiang Gu , James M. Rondinelli

We report the generation of optical squeezed vacuum states by means of polarization self-rotation in rubidium vapor following a proposal by Matsko et al. [Phys. Rev. A 66, 043815 (2002)]. The experimental setup, involving in essence just a…

Quantum Physics · Physics 2009-11-10 J. Ries , B. Brezger , A. I. Lvovsky

Layered platinum tellurium (PtTe2) was recently synthesized with controllable layer numbers down to a monolayer limit. Using ab initio calculations based on anisotropic Midgal-Eliashberg formalism, we show that by rubidium (Rb)…

Materials Science · Physics 2021-06-16 Danhong Wu , Yiping Lin , Lingxiao Xiong , Junjie Li , Tiantian Luo , Deyi Chen , Feipeng Zheng

We propose an experiment to extract ponderomotive squeezing from an interferometer with high circulating power and low mass mirrors. In this interferometer, optical resonances of the arm cavities are detuned from the laser frequency,…

General Relativity and Quantum Cosmology · Physics 2009-11-11 T. Corbitt , Y. Chen , F. Khalili , D. Ottaway , S. Vyatchanin , S. Whitcomb , N. Mavalvala

We report the first experimental demonstration of squeezed lasing in a reservoir-engineered optical parametric oscillator (OPO). The OPO provides a basis of squeezed states and parametric amplification in lasing emission, whose vacuum…

Quantum Physics · Physics 2025-07-09 Yuhang Tian , Yajun Wang , Weijie Wang , Xiaocong Sun , Yuhang Li , Shaoping Shi , Long Tian , Yaohui Zheng

The Abbe's diffraction limit restricts the resolution of an optical imaging and lithography system. Coherent Rabi oscillation is shown to be able to overcome the diffraction limit in both optical and atom lithography. In previous studies,…

Quantum Physics · Physics 2018-04-04 Anqi Zhang , Zeyang Liao , Rongxin Chen , Da-Wei Wang

We report on the implementation of metallic microtubes in a system of rubidium vapour at 230\,bar of argon buffer gas. The high buffer gas pressure leads to a widely pressure broadened linewidth of several nanometers, interpolating between…

Atomic and Molecular Clusters · Physics 2015-03-17 Ulrich Vogl , Anne Saß , Frank Vewinger , Martin Weitz , Alexander Solovev , Yongfeng Mei , Oliver Schmidt

The radiation-pressure driven interaction of a coherent light field with a mechanical oscillator induces correlations between the amplitude and phase quadratures of the light. These correlations result in squeezed light -- light with…

In this paper we describe that the optically pumped frequency standards can have frequency stability beyond the quantum noise limit by detecting the Ramsey resonance through the squeezed light. In this paper we report that instead of…

Quantum Physics · Physics 2011-04-08 G. M. Saxena

We investigate the storage of light in atomic rubidium vapor using a multilevel-tripod scheme. In the system, two collective dark polariton modes exist, forming an effective spinor quasiparticle. Storage of light is performed by dynamically…

Quantum Physics · Physics 2008-10-31 Leon Karpa , Frank Vewinger , Martin Weitz

Suspended graphene is difficult to image by scanning probe microscopy due to the inherent van-der-Waals and dielectric forces exerted by the tip which are not counteracted by a substrate. Here, we report scanning tunneling microscopy data…

Mesoscale and Nanoscale Physics · Physics 2016-11-21 A. Georgi , P. Nemes-Incze , B. Szafranek , D. Neumaier , V. Geringer , M. Liebmann , M. Morgenstern

We analyse a novel squeezing and entangling mechanism which is due to correlated Stokes and anti-Stokes photon forward scattering in a multi-level atom vapour. Following the proposal we present an experimental demonstration of 3.5 dB pulsed…

Quantum Physics · Physics 2010-12-30 W. Wasilewski , T. Fernholz , K. Jensen , L. S. Madsen , H. Krauter , C. Muschik , E. S. Polzik

We investigate the interplay between Zeeman and light shifts in the transmission spectrum of an optically trapped, spin-polarized Rubidium atom. The spectral shape of the transmission changes from multiple, broad resonances to a single,…

Atomic Physics · Physics 2019-03-01 Matthias Steiner , Yue-Sum Chin , Christian Kurtsiefer

Employing the quantum Hamiltonian describing the interaction of two-mode light (signal-idler modes) generated by a nondegenerate parametric oscillator (NDPO) with two uncorrelated squeezed vacuum reservoirs (USVR), we derive the master…

Quantum Physics · Physics 2007-05-23 Alem Mebrahtu

We report the confinement of an optomechanical micro-oscillator in a squeezed thermal state, obtained by parametric modulation of the optical spring. We propose and implement an experimental scheme based on parametric feedback control of…

Mesoscale and Nanoscale Physics · Physics 2015-06-17 A. Pontin , M. Bonaldi , A. Borrielli , F. S. Cataliotti , F. Marino , G. A. Prodi , E. Serra , F. Marin

Squeezed states of light are essential for emerging quantum technology in metrology and information processing. Chip-integrated photonics offers a route to scalable and efficient squeezed light generation, however, parasitic nonlinear…

Optics · Physics 2025-02-25 Alexander E. Ulanov , Bastian Ruhnke , Thibault Wildi , Tobias Herr

We demonstrate trapping of individual rubidium (Rb) and cesium (Cs) atoms in an interleaved array of bright tweezers and dark bottle-beam traps, using a microfabricated optical element illuminated by a single laser beam and a 4F system with…

We demonstrate the generation of $12.1 \pm 0.2$ dB squeezed light from a periodically poled lithium niobate (PPLN) waveguide optical parametric amplifier (OPA). While single-pass OPAs offer squeezed light with THz-order bandwidths, loss…

By illuminating an individual rubidium atom stored in a tight optical tweezer with short resonant light pulses, we create an efficient triggered source of single photons with a well-defined polarization. The measured intensity correlation…

We discuss novel features of twisted-light absorption both by hydrogen-like atoms and by micro-particles. First, we extend the treatment of atomic photoexcitation by twisted photons to include atomic recoil, derive generalized quantum…

Quantum Physics · Physics 2014-10-17 Andrei Afanasev , Carl E. Carlson , Asmita Mukherjee