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Ytterbium (Yb) is used in cold-atom systems, including magneto-optical traps and optical lattice clocks. However, the long-term operation of such systems may be associated with substantial degradation of optical transmittance through vacuum…

Atomic Physics · Physics 2025-09-10 Kanta Asakawa , Taichi Kobayashi , Masami Yasuda , Takao Aoki , Atsushi Hatakeyama

Quantum measurements of mechanical systems can produce optical squeezing via ponderomotive forces. Its observation requires high environmental isolation and efficient detection, typically achieved by using optical cavities and cryogenic…

Continuously operating atom-light interfaces represent a key prerequisite for steady-state quantum sensors and efficient quantum processors. Here, we demonstrate continuous accumulation of sub-Doppler-cooled atoms in a shallow intracavity…

Quantum Physics · Physics 2025-12-17 Edward Gheorghita , Sebastian Wald , Andrea Pupić , Onur Hosten

We demonstrate highly efficient coupling of light from an optical fiber to a silicon photonic crystal optomechanical cavity. The fiber-to-cavity coupling utilizes a compact (L ~ 25 um) intermediate adiabatic coupler. The optical coupling is…

Interference and coincidence detection of two photons emitted by two remote ions can lead to an entangled state which is a critical resource for scalable quantum information processing. Currently, the success probabilities of experimental…

Quantum Physics · Physics 2015-05-30 Taehyun Kim , Peter Maunz , Jungsang Kim

We present the realization of a combined trapped-ion and optical cavity system, in which a single Yb^+ ion is confined by a micron-scale ion trap inside a 230 mum-long optical fiber cavity. We characterize the spatial ion-cavity coupling…

Quantum Physics · Physics 2013-01-28 Matthias Steiner , Hendrik M. Meyer , Christian Deutsch , Jakob Reichel , Michael Köhl

In optical pumping of rubidium, a new kind of absorption occurs with a higher amplitude of radio frequency current. From measurement of the corresponding magnetic field value where this absorption occurs, there is a conclusion that it is…

Optics · Physics 2015-11-25 Xinyi Xu

Fabry-P\'erot (FP) cavities are fundamental and ubiquitous optical elements frequently used in various sensing applications. Here, we introduce a general theoretical framework to study arbitrary light-cavity mode interactions for planar FPs…

Optics · Physics 2020-07-21 Jakub Czuchnowski , Robert Prevedel

Slow-light enhanced optical detection in liquid-infiltrated photonic crystals is theoretically studied. Using a scattering-matrix approach and the Wigner-Smith delay time concept, we show that optical absorbance benefits both from…

Optics · Physics 2008-02-02 M. E. V. Pedersen , L. S. Rishoj , H. Steffensen , S. Xiao , N. A. Mortensen

Cavity-assisted storage and retrieval of single-photon wave packets in optically thin spatially extended resonant materials are analyzed. It is shown that the use of cavity tuning allows one to store and recall time-symmetric double-sided…

Quantum Physics · Physics 2009-11-13 Alexey Kalachev

Cavity optomechanics explores the coupling between the optical field and the mechanical oscillation to induce cooling and regenerative oscillation in a mechanical oscillator. So far, optomechanics relies on the detuning between the cavity…

A two-step photoionization strategy of an ultracold rubidium beam for application in a focused ion beam instrument is analyzed and implemented. In this strategy the atomic beam is partly selected with an aperture after which the transmitted…

Atomic Physics · Physics 2017-11-22 G. ten Haaf , S. H. W. Wouters , P. H. A. Mutsaers , E. J. D. Vredenbregt

It has recently been shown [Rossi et al., Phys. Rev. Lett. 119, 123603 (2017); ibid. 120, 073601 (2018)] that feedback--controlled in--loop light can be used to enhance the efficiency of optomechanical systems. We analyse the theoretical…

Quantum Physics · Physics 2018-08-14 Stefano Zippilli , Nenad Kralj , Massimiliano Rossi , Giovanni Di Giuseppe , David Vitali

We investigate theoretically the effect of optical feedback from a cavity containing an ultracold two level atomic ensemble, on the bistable behavior shown by mean intracavity optical field and the ground state cooling effect of the…

Quantum Physics · Physics 2015-03-13 Bijita Sarma , Amarendra K. Sarma

The loss of surface plasmon polaritons has long been considered as a fatal shortcoming in information transport. Here we propose a plasmonic absorber utilizing this "shortcoming" to absorb the stray light in photonic integrated circuits…

Optics · Physics 2015-06-18 Xiao Xiong , Chang-Ling Zou , Xi-Feng Ren , Guang-Can Guo

The interaction of laser cooled and trapped atoms with resonant light is limited by the linewidth of the excited state of the atom. Another precise optical oscillator is an optical Fabry-P\'erot cavity. The combining of cold atoms with…

Optics · Physics 2017-09-19 Rahul Sawant , S. A. Rangwala

Slow-light enhanced absorption in liquid-infiltrated photonic crystals has recently been proposed as a route to compensate for the reduced optical path in typical lab-on-a-chip systems for bio-chemical sensing applications. A simple…

Optics · Physics 2008-02-06 Jesper Pedersen , Sanshui Xiao , Niels Asger Mortensen

We study phase conjugation in a nonlinear composite slab when the counter propagating pump waves are completely absorbed by means of coherent perfect absorption. Under the undepleted pump approximation the coupling constant and the phase…

Optics · Physics 2016-11-29 K. Nireekshan Reddy , Achanta Venu Gopal , S. Dutta Gupta

Optical heating of resonant nanostructures is one of the key issues in modern nanophotonics, being either harmful or desirable effect depending on the applications. Despite a linear regime of light-to-heat conversion is well-studied both…

Ultracold $^{87}$Rb atoms are delivered into a high-finesse optical micro-cavity using a translating optical lattice trap and detected via the cavity field. The atoms are loaded into an optical lattice from a magneto-optic trap (MOT) and…

Quantum Physics · Physics 2009-11-10 J. A. Sauer , K. M. Fortier , M. S. Chang , C. D. Hamley , M. S. Chapman