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Laser cooling of alkali atoms typically requires time-varying magnetic fields, introducing unwanted coupling between atom preparation and coherent operations. Here we demonstrate sub-Doppler laser cooling and optical transport of alkali…

We describe a novel pulsed magnetic gradiometer based on the optical interference of sidebands generated using two spatially separated alkali vapor cells. The sidebands are produced with high efficiency using parametric frequency conversion…

Atomic Physics · Physics 2021-11-25 Kaleb Campbell , Ying-Ju Wang , Igor Savukov , Peter Schwindt , Yuan-Yu Jau , Vishal Shah

We present absolute frequency measurements of a laser stabilized using an offset sideband locking technique on the P(49)24-1 rovibrational transition of $^{127}\mathrm{I}_2$ near 556 nm. The P(49)24-1 transition is offset by 4.8 GHz from…

Instrumentation and Detectors · Physics 2025-03-18 Martin Hauden , Jacques Millo , Martina Matusko , Francisco S Ponciano Ojeda , Yann Kersalé , Marion Delehaye

We suggest a protocol for the sympathetic cooling of a molecular asymmetric top rotor co-trapped with laser-cooled atomic ions, based on resonant coupling between the molecular ion's electric dipole moment and a common normal mode of the…

Quantum Physics · Physics 2026-02-04 Monika Leibscher , Alexander Blech , Christiane P. Koch

The appeal of lasers can be attributed to both their ubiquitous applications and their role as model systems for elucidating nonequilibrium and cooperative phenomena. Introducing novel concepts in lasers thus has a potential for both…

Mesoscale and Nanoscale Physics · Physics 2019-04-15 Markus Lindemann , Gaofeng Xu , Tobias Pusch , Rainer Michalzik , Martin R. Hofmann , Igor Žutić , Nils C. Gerhardt

We present a simple method for fully-stabilized mid-infrared optical frequency comb generation based on single-pass femtosecond optical parametric generation that is seeded by a continuous-wave laser. We have implemented the method in a…

Optics · Physics 2024-06-12 Mikhail Roiz , Krishna Kumar , Juho Karhu , Markku Vainio

We show that inducing sidebands in the emission of a single emitter into a one dimensional waveguide, together with a dissipative re-pumping process, a photon field is cooled down to a squeezed vacuum. Our method does not require to be in…

Quantum Physics · Physics 2012-02-21 Diego Porras , Juan José García-Ripoll

Self-injection locking of a diode laser to a high-quality-factor microresonator is widely used for frequency stabilization and linewidth narrowing. We constructed several microresonator-based laser sources with measured instantaneous…

In this paper, we report a capillary-based M-Z interferometer that could be used for precise detection of variations in refractive indices of gaseous samples. This sensing mechanism is quite straightforward. Cladding and core modes of a…

Applied Physics · Physics 2020-03-10 Haijin Chen , Xuehao Hu , Meifan He , Pengfei Ren , Chao Zhang , Hang Qu

Here we introduce interferometric devices by combining optical feedback (cavities) with unbiased multiports, which unlike traditional beam dividers, allow light to reflect back out of the port from which it originated. By replacing the…

Quantum Physics · Physics 2023-06-05 Christopher R. Schwarze , David S. Simon , Alexander V. Sergienko

Inelastic back-scattering of stray light is a long-standing and fundamental problem in high-sensitivity interferometric measurements and a potential limitation for advanced gravitational-wave detectors. The emerging parasitic interferences…

General Relativity and Quantum Cosmology · Physics 2015-10-15 Melanie Meinders , Roman Schnabel

In recent years diode laser sources have become widespread and reliable tools in magneto-optical spectroscopy. In particular, laser-driven atomic magnetometers have found a wide range of practical applications. More recently, so-called…

Atomic Physics · Physics 2015-06-16 Z. D. Grujić , A. Weis

We present a compact $^{87}$Rb atomic source for high precision dual atom interferometers. The source is based on a double-stage magneto-optical trap (MOT) design, consisting of a 2-dimensional (2D)-MOT for efficient loading of a 3D-MOT.…

Atomic Physics · Physics 2016-08-14 T. Müller , T. Wendrich , M. Gilowski , C. Jentsch , E. M. Rasel , W. Ertmer

We control the relative coupling strength of carrier and first order motional sideband interactions of a trapped ion by placing it in a resonant optical standing wave. Our configuration uses the surface of a microfabricated chip trap as a…

A new generation of atomic sensors using ultra-narrow optical clock transitions and composite pulses are pushing quantum engineering control to a very high level of precision for applied and fundamental physics. Here, we propose a new…

Atomic Physics · Physics 2022-02-15 T. Zanon-Willette , D. Wilkowski , A. V. Taichenachev , V. I. Yudin

A novel method of ground state laser cooling of trapped atoms utilizes the absorption profile of a three (or multi-) level system which is tailored by a quantum interference. With cooling rates comparable to conventional sideband cooling,…

Quantum Physics · Physics 2010-03-26 F. Schmidt-Kaler , J. Eschner , G. Morigi , C. F. Roos , D. Leibfried , A. Mundt , R. Blatt

Optically-pumped atomic magnetometers have previously been used in arrays to reject interference from far away sources and enable the sensitive detection of local sources of radio frequency (RF) signals, useful, for instance, in the…

Instrumentation and Detectors · Physics 2026-02-10 Ayse Marasli , Thomas Kornack , Casey Oware , Karen L. Sauer

Narrow-linewidth lasers with absolute frequency anchoring are essential for precision metrology, coherent sensing, and emerging quantum technologies beyond laboratory environments. Optical cavities and interferometers provide exceptional…

The Laser Interferometer Space Antenna (LISA) will operate as an AM/FM receiver for gravitational waves. For binary systems, the source location, orientation and orbital phase are encoded in the amplitude and frequency modulation. The same…

Astrophysics · Physics 2009-11-07 Neil J. Cornish , Shane L. Larson

Atom-interferometric quantum sensors could revolutionize navigation, civil engineering, and Earth observation. However, operation in real-world environments is challenging due to external interference, platform noise, and constraints on…