doubleMOT – UHV System for Cold Atoms

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  • Compact UHV system with 2D and 3D MOT
  • For rubidium or cesium
  • Typically >5 × 10⁸ atoms in the MOT
  • Magnetron lifespan typ. >40 s
  • Integrated active and passive vacuum pumps
  • Standard or custom Science Cell
DWW

Dr. Wolf-Dieter Wagner

Laser, Quantum optics, Spectroscopy, Particle measurement


doubleMOT – compact UHV system for cold atoms

The doubleMOT from Infleqtion is a compact, standalone ultra-high vacuum system for generating and trapping cold atoms. It combines a source chamber for high atomic fluxes with a science cell for long storage times and excellent optical access.

The system is suitable for research and development in atomic physics, quantum sensing, and other applications involving neutral atoms. It is delivered under a permanent vacuum and can be integrated directly into suitable experimental setups.

Two chambers for 2D and 3D MOT

The doubleMOT uses two chambers differentially pumped via a silicon pinhole structure.

The lower chamber serves to generate a high atomic flux in a 2D-MOT, while the upper Science Cell provides a significantly better vacuum for a 3D-MOT provides.

This allows high atom numbers to be combined with long trap lifetimes. Typically, more than 5 × 10⁸ atoms and MOT lifespans of over 40 seconds reached.

Integrated vacuum technology

The system features a combination of active and passive pumps to maintain the ultra-high vacuum. These include an ion pump as well as passive getter technologies.

For the Science Cell, Infleqtion specifies a typical pressure of under 0.8 nTorr an.

For rubidium and cesium

The doubleMOT is for experiments with Rubidium or cesium available.

Up to two independent active dispensers can be integrated. This allows the atom source to be flexibly adapted to different experimental requirements.

Flexible Science Cell Configuration

Various options are available for the Science Cell:

  • square glass cell
  • Cell imaging
  • custom geometries
  • uncoated versions
  • broadband AR coatings
  • targeted AR coatings
  • custom coatings

This allows the system to be adapted to different optical and experimental requirements.

Integration into modular cold atom systems

The doubleMOT is designed for integration with other Infleqtion components. These include, among others:

  • Physics Platform
  • Magpies for the 2D MOT beam path
  • 2D+ MOT Magnet Assembly
  • TriCoil

For example, the Physics Platform provides the optics for 2D+- and 3D-MOT, optical pumping, and imaging, and is specifically designed for doubleMOT and RuBECi.

Typical applications

  • Magneto-optical traps
  • Production of cold atom clouds
  • Quantum sensing
  • atom interferometry
  • neutral atom experiments
  • Development of new quantum technologies
  • Atomic physics and basic research

doubleMOT from Infleqtion

The doubleMOT forms a compact vacuum platform for experiments with neutral atoms and can be used both as a standalone system and as the core of a modular cold-atom setup.

Soliton assists you in selecting and configuring the doubleMOT as well as in integrating optical, magnetic, and vacuum components for your experimental setup.

Specifications

Property Value
External dimensions 12.7 × 12.7 × 39.4 cm
Weight 3.9 kg
Species Rubidium or cesium
Typical MOT size >5 × 10⁸ atoms
Typical MOT lifespan >40 s
Typical atomic flow 1 × 10⁹ atoms/s
Science Cell Vacuum <0.8 nTorr
Ion pump performance 2 l/s
residual magnetic field ion pump <0.5 G
Dispenser power 2.0–3.5 A

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