论文信息 - Miniature dc SQUID devices for the detection of single atomic spin-flips

Miniature dc SQUID devices for the detection of single atomic spin-flips

Abstract We report progress towards a superconducting quantum interference device (SQUID) based system capable of detecting single atomic spin-flips. The scaling of the flux sensitivity with SQUID loop dimension of miniature Nb dc SQUIDs is examined and shown experimentally to vary as predicted. Our smallest device, with loop size 3×3 μm 2 , is capable of detecting a few spins in a 1 Hz bandwidth. We address the task of depositing a sample, of nanoscale dimension, within the SQUID loop.

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