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# FIB cross section of a SQUID multiplexer integrated circuit

## Appears In

                        - Device Fabrication Group

Focused Ion Beam (FIB) cross section of a SQUID multiplexer integrated circuit fabricated in the Quantum Sensors Group.  This image shows the both the plan and cross sectional views of a small region of flux-addressed switch used in our time-division multiplexers.  The process uses Nb/AlOx/Nb junctions and has 3 Nb wiring layers.

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