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Techniques of Atom trapping and laser cooling have proved to be very important tools in probing many aspects of fundamental physics. In this talk I wish to present ideas on how they may used to settle certain issues in the foundational…

Quantum Physics · Physics 2007-05-23 N. D. Hari Dass

We present a technical guide to developing a quantum-mechanical system with co-trapped laser-cooled ions and electrons, aiming to utilize this mixed-species system in quantum computing and sensing. We outline a method to control the…

Quantum Physics · Physics 2025-10-08 Niklas Vilhelm Lausti , Vineet Kumar , Ivan Hudák , Michal Tarana , Michal Hejduk

We study motion and field dynamics of a single-atom laser consisting of a single incoherently pumped free atom moving in an optical high-{\it Q} resonator. For sufficient pumping, the system starts lasing whenever the atom is close to a…

Quantum Physics · Physics 2007-12-18 Thomas Salzburger , Helmut Ritsch

Trapping and optically interfacing laser-cooled neutral atoms is an essential requirement for their use in advanced quantum technologies. Here we simultaneously realize both of these tasks with cesium atoms interacting with a multi-color…

Quantum Physics · Physics 2010-06-03 E. Vetsch , D. Reitz , G. Sagué , R. Schmidt , S. T. Dawkins , A. Rauschenbeutel

Recent realizations of single-atom trapping and tracking in cavity QED open the door for feedback schemes which actively stabilize the motion of a single atom in real time. We present feedback algorithms for cooling the radial component of…

Quantum Physics · Physics 2009-11-11 T. W. Lynn , K. Birnbaum , H. J. Kimble

A 20-fold increase over the single path optical absorption is demonstrated with a low loss medium placed in a resonant cavity. This has been applied to laser cooling of Yb:ZBLAN glass resulting in 90% absorption of the incident pump light.…

Optically trapped nanoparticles have recently emerged as exciting candidates for tests of quantum mechanics at the macroscale and as versatile platforms for ultrasensitive metrology. Recent experiments have demonstrated parametric feedback…

Quantum Physics · Physics 2016-03-23 B. Rodenburg , L. P. Neukirch , A. N. Vamivakas , M. Bhattacharya

Chip-scale atomic devices built around micro-fabricated alkali vapor cells are at the forefront of compact metrology and atomic sensors. We demonstrate a micro-fabricated vapor cell that is actively-pumped to ultra-high-vacuum (UHV) to…

Recently, remarkable advances have been made in coupling a number of high-Q modes of nano-mechanical systems to high-finesse optical cavities, with the goal of reaching regimes where quantum behavior can be observed and leveraged toward new…

Quantum Physics · Physics 2010-01-01 D. E. Chang , C. A. Regal , S. B. Papp , D. J. Wilson , J. Ye , O. Painter , H. J. Kimble , P. Zoller

We present experimental techniques and results related to the optimization and characterization of our nanofiber-based atom trap [Vetsch et al., Phys. Rev. Lett. 104, 203603 (2010)]. The atoms are confined in an optical lattice which is…

The resonant laser cooling of circular accelerator beams of relativistic charged particle is studied. It is shown that in the approximation of the given external electromagnetic wave amplitude (small gain free electron laser) the emittance…

Accelerator Physics · Physics 2007-05-23 R. V. Tumanian

Transporting charged particles between different traps has become an important feature in high-precision spectroscopy experiments of different types. In many experiments in atomic and molecular physics, the optical probing of the ions is…

Atomic Physics · Physics 2015-05-19 M. R. Kamsap , C. Champenois , J. Pedregosa-Gutierrez , M. Houssin , M. Knoop

Recently, laser cooling methods have been extended from atoms to molecules. The complex rotational and vibrational energy level structure of molecules makes laser cooling difficult, but these difficulties have been overcome and molecules…

Atomic Physics · Physics 2019-02-18 M. R. Tarbutt

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

We have fabricated an atom chip device which combines the circuitry for magnetic trapping of cold atoms with high-finesse optical resonators suitable for cavity QED in the single-atom strong coupling regime. Fabry-Perot optical resonators…

Quantum Physics · Physics 2009-11-13 T. P. Purdy , D. M. Stamper-Kurn

A pulsed cooling scheme for optomechanical systems is presented that is capable of cooling at much faster rates, shorter overall cooling times, and for a wider set of experimental scenarios than is possible by conventional methods. The…

We propose to use sub-wavelength confinement of light associated with the near field of plasmonic systems to create nanoscale optical lattices for ultracold atoms. Our approach combines the unique coherence properties of isolated atoms with…

Atomic Physics · Physics 2014-07-29 M. Gullans , T. Tiecke , D. E. Chang , J. Feist , J. D. Thompson , J. I. Cirac , P. Zoller , M. D. Lukin

The transmission spectrum for one atom strongly coupled to the field of a high-finesse optical resonator is observed to exhibit a clearly resolved vacuum-Rabi splitting characteristic of the normal modes in the eigenvalue spectrum of the…

Quantum Physics · Physics 2009-11-10 A. Boca , R. Miller , K. M. Birnbaum , A. D. Boozer , J. McKeever , H. J. Kimble

We implement sympathetic cooling of highly charged ions (HCI) by fully enclosing a linear Paul trap within a superconducting radio-frequency resonator. A quantization magnetic field applied while cooling down into the superconducting state…

The last few years have seen rapid progress in the application of laser cooling to molecules. In this review, we examine what kinds of molecules can be laser cooled, how to design a suitable cooling scheme, and how the cooling can be…

Atomic Physics · Physics 2021-12-14 N. J. Fitch , M. R. Tarbutt