Demonstrating the 6 K measurement capability of an improved scanning quantum cryogenic atom microscope
ORAL
Abstract
The Scanning Quantum Cryogenic Atom Microscope (SQCRAMscope) is a quantum sensor that utilizes an elongated Bose-Einstein condensate to characterize an electromagnetic potential landscape near a sample. Here, we expand the previously reported capabilities of the microscope, improving its ease of use and lowering the base sample temperature from 35 K to 5.7 K. These upgrades include streamlined methods for BEC generation and sample loading, a closed-cycle pulse tube cryostat, and a radiation shield enclosing the sample mount. We present this improvement with cooldown data alongside sample vibration measurements, to demonstrate that the previously measured imaging resolution and field sensitivity of the microscope can be maintained in this new regime.
*We acknowledge funding support from the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, under Award Number DE-SC0019174. Fabrication of sample mount substrates and the atom chip were performed at the Stanford Nanofabrication Facility and the Stanford Nano Shared Facility, supported by the NSF under award no. ECCS-1542152.
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Publication: S. F. Taylor, F. Yang, B. F. Freudenstein and B. L. Lev, A scanning quantum cryogenic atom microscope at 6 K, arXiv:2010.03559v1.
Accepted for publication in SciPost.
Presenters
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Brandon A Freudenstein
- Stanford Univ