aqora

Trapping ultracold atoms close to surfaces and molecule chips

Michael E. Holmes

Jan 1, 20060 citations

Atoms, molecules, and optics on chips

M. Tscherneck, Jan Kleinert, Christopher Haimberger +4 more

We discuss the realization of atomic, molecular and optical physics experiments using microfabricated "chip" structures. We focus in particular on the potential for trapping ultra-cold polar molecules using such chip devices and consider the feasibility of several designs and applications.

Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIEFeb 9, 20061 citation

Microscopic atom optics: from wires to an atom chip

R. Folman, P. Krüger, Jörg Schmiedmayer +2 more

We give a comprehensive overview of the development of micro traps, from the first experiments on guiding atoms using current carrying wires in the early 1990's to the creation of a BEC on an atom chip.

arXiv:0805.2613May 16, 20085 citations

Probing atoms and molecules close to macroscopic bodies

Athanasios Laliotis

In this habilitation thesis, I briefly present my work at Imperial College London on trapping atomic clouds in micro-pyramids fabricated on silicon chips, which led to the fabrication of an on-chip integrated atom source. Next, I describe the research carried out at the Laboratoire de Physique des Lasers in the SAI group. Our experiments demonstrated the temperature dependence of near-field Casimir-Polder interactions due to thermal excitation of surface waves, thus advancing our understanding of the dielectric properties of matter and the quantum vacuum that surrounds it. I also present spectroscopic experiments with atomic vapors confined in nanostructures (nano-sphere opals) aiming at the fabrication of miniature frequency references. Finally, I explore the possibility of performing spectroscopic experiments on molecular gases close to surfaces.In this habilitation thesis, I briefly present my work at Imperial College London on trapping atomic clouds in micro-pyramids fabricated on silicon chips, which led to the fabrication of an on-chip integrated atom source. Next, I describe the research carried out at the Laboratoire de Physique des Lasers in the SAI group. Our experiments demonstrated the temperature dependence of near-field Casimir-Polder interactions due to thermal excitation of surface waves, thus advancing our understanding of the dielectric properties of matter and the quantum vacuum that surrounds it. I also present spectroscopic experiments with atomic vapors confined in nanostructures (nano-sphere opals) aiming at the fabrication of miniature frequency references. Finally, I explore the possibility of performing spectroscopic experiments on molecular gases close to surfaces.

arXiv:2312.10811Dec 17, 20230 citations

Trapping molecules on chips

Gabriele Santambrogio

In the last years, it was demonstrated that neutral molecules can be loaded on a microchip directly from a supersonic beam. The molecules are confined in microscopic traps that can be moved smoothly over the surface of the chip. Once the molecules are trapped, they can be decelerated to a standstill, for instance, or pumped into selected quantum states by laser light or microwaves. Molecules are detected on the chip by time-resolved spatial imaging, which allows for the study of the distribution in the phase space of the molecular ensemble.In the last years, it was demonstrated that neutral molecules can be loaded on a microchip directly from a supersonic beam. The molecules are confined in microscopic traps that can be moved smoothly over the surface of the chip. Once the molecules are trapped, they can be decelerated to a standstill, for instance, or pumped into selected quantum states by laser light or microwaves. Molecules are detected on the chip by time-resolved spatial imaging, which allows for the study of the distribution in the phase space of the molecular ensemble.

arXiv:1509.03771EPJ Techniques and InstrumentationSep 9, 20159 citations

Developments in Cold Atom Traps Alongside the Air Force Research Laboratory

White, Jonathan V.

My internship was with the Air Force Research Laboratory’s Quantum Sensing Timing group. This group has been heading research into high-aspect ratio, direct-bonded copper substrates for the last 2 decades and have made major contributions to the field in terms of the maximum achievable gradients for micro-scale chip traps. Over the course of this paper, I will detail some of the basic formalism involved, give a little history, detail some improvements made over the last few years, and then end with using what I’ve learned to theory- craft a functional atom-chip utilizing best-practices. This chip’s theoretical limits will hit a trap frequency of up to 1500 Hz, be able to trap up to 1.13 mm away from the chip surface and will need a perpendicular bias field of up to 132 Gauss.My internship was with the Air Force Research Laboratory’s Quantum Sensing Timing group. This group has been heading research into high-aspect ratio, direct-bonded copper substrates for the last 2 decades and have made major contributions to the field in terms of the maximum achievable gradients for micro-scale chip traps. Over the course of this paper, I will detail some of the basic formalism involved, give a little history, detail some improvements made over the last few years, and then end with using what I’ve learned to theory- craft a functional atom-chip utilizing best-practices. This chip’s theoretical limits will hit a trap frequency of up to 1500 Hz, be able to trap up to 1.13 mm away from the chip surface and will need a perpendicular bias field of up to 132 Gauss.

Jun 2, 20230 citations

Optics and molecules on atom chips

Abstract

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Optics and molecules on atom chips

Abstract

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