Instruments
Instruments (Coming Soon)
A QISE research and training facility at Howard: A major gap at Howard is the lack of sophisticated, state-of-the-art experimental infrastructure in the field of QISE that can be used for hands-on research and training. In this context, a signature component of this proposed project will be the acquisition and commissioning of a state-of-the-art Low-temperature Cryogenic Scanning NV Magnetometer (LT-SNVM) system (model ProteusQ quantum microscope from Qnami), which is a powerful diamond nitrogen-vacancy (NV)-center-based nanoscale scanning microscope capable of analyzing magnetic field distributions down to almost atomic scales, see Fig. 1a. The LT-SNVM system will complement the room-temperature SNVM system already in place and operation at Northeastern University. The proposed system will expand our ability to explore qubit-based phenomena at cryogenic temperatures, with nanoscale mapping capability. The system includes an optical cryostat, and a cooling setup that will enable us to run the system at temperatures below 2 K without incurring the variable costs of liquid Helium. The system will include the ability to subject samples to magnetic fields up to 3 T normal to the sample surface and 500 mT in-plane. A schematic diagram of this system is shown in Fig. 1b. Qnami’s patented single NV scanning probes offer a 10-20 nm implantation depth (limiting spatial resolution to app. 20 nm and enable measurement sensitivity of 1 µT/√(Hz) for DC measurements and 50 nT/√ (Hz) for AC measurements. Past applications of similar LT-SNVM systems include imaging topological defects in antiferromagnetic systems and antiferromagnetic nanowires, mapping magnetic phases in antiferromagnets, and characterizing the decay of magnon polarons.
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Figure 1. Howard Uni |