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Ultracold molecules, because of their rich internal structures and interactions, have been proposed as a promising platform for quantum science and precision measurement. Direct laser-cooling promises to be a rapid and efficient way to…

Atomic Physics · Physics 2024-06-18 Yukai Lu , Samuel J. Li , Connor M. Holland , Lawrence W. Cheuk

Laser cooling methods for trapped ions are most commonly studied at low energies, i.e., in the Lamb-Dicke regime. However, ions in experiments are often excited to higher energies for which the Lamb-Dicke approximation breaks down. Here we…

We propose a new laser cooling method for atomic species whose level structure makes traditional laser cooling difficult. For instance, laser cooling of hydrogen requires single-frequency vacuum-ultraviolet light, while multielectron atoms…

Atomic Physics · Physics 2015-06-26 D. Kielpinski

Laser-cooled gases of atoms interacting with the field of an optical cavity are a powerful tool for quantum sensing and the simulation of open and closed quantum systems. They can display spontaneous self-organisation phase transitions,…

Quantum Physics · Physics 2024-06-03 V. M. Schäfer , Z. Niu , J. R. K. Cline , D. J. Young , E. Y. Song , H. Ritsch , J. K. Thompson

Narrow line laser cooling is advancing the frontier for experiments ranging from studies of fundamental atomic physics to high precision optical frequency standards. In this paper, we present an extensive description of the systems and…

Atomic Physics · Physics 2009-11-10 Thomas H. Loftus , Tetsuya Ido , Martin M. Boyd , Andrew D. Ludlow , Jun Ye

A novel type of particle "cooling", called Ionization Cooling, is applicable to slow (v of the order of 0.1c) ions stored in a small ring. The many traversals through a thin foil enhance the nuclear reaction probability, in a steady…

High Energy Physics - Phenomenology · Physics 2011-05-18 C. Rubbia , A. Ferrari , Y. Kadi , V. Vlachoudis

Based on an experimental study of two-body and three-body collisions in ultracold strontium samples, a novel optical-sympathetic cooling method in isotopic mixtures is demonstrated. Without evaporative cooling, a phase-space density of…

Atomic Physics · Physics 2007-05-23 G. Ferrari , R. E. Drullinger , N. Poli , F. Sorrentino , G. M. Tino

We propose a laser cooling technique in which atoms are selectively excited to a dressed metastable state whose light shift and decay rate are spatially correlated for Sisyphus cooling. The case of cooling magnetically trapped…

Atomic Physics · Physics 2015-03-17 Saijun Wu , Roger C. Brown , William D. Phillips , J. V. Porto

We demonstrate rotational excitation of molecular ions that are sympathetically cooled by laser-cooled atomic ions to a temperature as low as ca. 10 mK. The molecular hydrogen ions HD+ and the fundamental rotational transition $(v=0,\,…

Quantum Physics · Physics 2013-11-05 J. Shen , A. Borodin , M. Hansen , S. Schiller

The established approach to laser cooling of solids relies on anti-Stokes fluorescence, for example from rare earth impurities in glass. Although successful, there is a minimum temperature to which such a process can cool set by the…

Quantum Physics · Physics 2025-01-24 Paul R. Eastham , Conor N. Murphy , Luisa Toledo Tude

We show experimentally that 3-D laser cooling of lithium atoms is achieved when the laser light is tuned exactly to resonance with the atomic transition. For a theoretical description of this surprising phenomenon we resolve to a full model…

Quantum Gases · Physics 2018-05-09 Yaakov Yudkin , Lev Khaykovich

Ground state laser cooling of a single trapped ion is achieved using a technique which tailors the absorption profile for the cooling laser by exploiting electromagnetically induced transparency in the Zeeman structure of a dipole…

Quantum Physics · Physics 2009-11-06 C. F. Roos , D. Leibfried , A. Mundt , F. Schmidt-Kaler , J. Eschner , R. Blatt

We describe measurements demonstrating laser cooling of an atomic gas by means of collisional redistribution of radiation. The experiment uses rubidium atoms in the presence of several hundred bar of argon buffer gas pressure. Frequent…

Atomic Physics · Physics 2012-01-04 Ulrich Vogl , Anne Saß , Simon Haßelmann , Martin Weitz

Laser cooling of atomic motion enables a wide variety of technological and scientific explorations using cold atoms. Here we focus on the effect of laser cooling on the photons instead of on the atoms. Specifically, we show that…

Quantum Physics · Physics 2018-09-24 Chiao-Hsuan Wang , M. J. Gullans , J. V. Porto , William D. Phillips , Jacob M. Taylor

Measurement-based control has emerged as an important technique to prepare mechanical resonators in pure quantum states for applications in quantum information processing and quantum sensing. Conventionally this has required two separate…

Parallel to advances in laser cooling of atoms and ions in dilute gas phase, which has progressed immensely, resulting in physics Nobel prizes in 1997 and 2001, major progress has recently been made in laser cooling of solids. I compare the…

Optics · Physics 2015-05-13 Galina Nemova

We combine the formalisms of Floquet theory and full counting statistics with a Markovian embedding strategy to access the dynamics and thermodynamics of a periodically driven thermal machine beyond the conventional Born-Markov…

Quantum Physics · Physics 2018-06-18 Sebastian Restrepo , Javier Cerrillo , Philipp Strasberg , Gernot Schaller

We implement and demonstrate the effectiveness of a cooling scheme using a moving, all-optical, one-way barrier to cool a sample of $^{87}$Rb atoms, achieving nearly a factor of 2 reduction in temperature. The one-way barrier, composed of…

Atomic Physics · Physics 2010-12-16 Elizabeth A. Schoene , Jeremy J. Thorn , Daniel A. Steck

Laser cooling of single atoms in optical tweezers is a prerequisite for neutral atom quantum computing and simulation. Resolved sideband cooling comprises a well-established method for efficient motional ground-state preparation, but…

Free cooling of granular materials is analyzed on the basis of a pseudo-Liouville operator. Exchange of translational and rotational energy requires surface roughness for spherical grains, but occurs for non-spherical grains, like needles,…

Statistical Mechanics · Physics 2007-05-23 Timo Aspelmeier , Martin Huthmann , Annette Zippelius
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