Photonically Integrated Cold Atom Sources (Picas)
Coil Picas
By using the Coil Picas, you can easily integrate optics into your Coil Picas Mount Assembly for a 2D+ MOT system with a tunable magnetic field. This system is perfect for those who are looking for a complete MOT and BEC solution for their lab. Additionally, the optional photodiode configuration provides polarization cleaning and power monitoring capability for all three beams.
Features
Coils for Fast Magnetic Field Generation
Compact Opto-Mechanics
Alignment-Free 2D+ MOT
Integrated Heat Sink
Available with Power Monitoring Photodiodes
Design Wavelengths and Elements
780 nm (Rubidium)
852 nm (Cesium)
Product Documents
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![Coil Picas]()
Coil Picas
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![Coil Picas Connections]()
Coil Picas Connections
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![Coil Picas Assembly Model with Coils and Source Cell]()
Coil Picas Assembly Model with Coils and Source Cell
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![Magnetic Coil Assembly for Coil Picas]()
Magnetic Coil Assembly for Coil Picas
Fixed Picas
The Fixed Picas is a compact, alignment-free beam delivery package. It produces a 2D+ MOT beam configuration with three user-supplied fiber-coupled light inputs, capable of producing a cold atom flux of >10⁹ atoms per second when used with Infleqtion’s well-established CASC, Cold Atom Source Cell. The unit is easily integrated into the MAG-2000 magnet assembly, allowing a simple plug-and-play optical package.
An optional photodiode configuration provides polarisation cleaning and power monitoring capability for all three beams.
Features
Compact Optics System
Simple 2D MOT Alignment
Pre-defined Polarization
Monitor laser power for automated process control
Design Wavelengths and Elements
780 nm (Rubidium)
852 nm (Cesium)
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![Assembly Model with Source Cell and Permanent Magnets]()
Assembly Model with Source Cell and Permanent Magnets
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![Fixed Picas Assembled with Source Cell and Permanent Magnets]()
Fixed Picas Assembled with Source Cell and Permanent Magnets
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![Fixed Picas Showing Photodiode Connections and Optical Fiber Inputs]()
Fixed Picas Showing Photodiode Connections and Optical Fiber Inputs
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![Fixed Picas Showing Retro-reflecting sides]()
Fixed Picas Showing Retro-reflecting sides
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![Fixed Picas Showing Viewing Aperture]()
Fixed Picas Showing Viewing Aperture
Related Research
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Picas: Photonically Integrated Cold Atom Source
We present a compact optical delivery design for a 2D+ MOT used with a magnetic assembly and a commercial vacuum piece to create a standardised cold atom source. Picas provides a plug-and-play system, free of optical alignment, capable of producing an atomic flux of >1e9 atoms per second with <50mW of laser power. The dimensions of the system are 67mm x 67mm x 112mm (W x H x L), where such compactness is achieved through a fixed optical design, additive manufacturing techniques, and a novel beam expansion method that forms a multiply split cylindrical beam.
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Progress towards a portable cold-atom pressure standard
All existing pressure standards (classical and quantum-based) are large apparatuses - typically, the size of a van or larger. In this thesis, we report on the progress towards building a portable version of a cold-atom based pressure standard which can easily transported by a van instead. Specifically, we discuss - the flexible laser design that can produce 780 nm pump light anywhere in a 26 GHz range and repump light anywhere in a +/- 6.8 GHz range within <1 MHz with no realignment. - the magnetic field coils that can produce gradients in excess of 400 G/cm without changing temperature (provided that >14 mL/s of 10 C to 15 C water is available. - the low-outgassing vacuum chamber that can supply rubidium for measurement while minimizing contamination in the chamber under test. - preliminary results characterizing the performance of its rubidium source and magneto-optical trap. - future plans for the apparatus. This pressure standard leverages the linear relationship between the pressure of a vacuum.
Related Products
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RuBECi
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