Quantum Manipulation and Sensing at the Single Atom Limit
Abstract
As we rush to inevitably squeeze the last bit of performance out of silicon-based devices, we need to concurrently invest in and develop future technologies to render them ready to take over once the limit has been reached. To achieve this, a transition from classical to quantum states becomes necessary. Therefore, the development of future computing technologies hinges on both developments in new quantum materials and new tools for their characterization. For example, two-dimensional quantum materials offer new paths forsolid-state quantum simulators as well as new state variables which can harness novel concepts in topology. Central to realize their full potential and application in future computing technologies, is the development of new quantum tools for manipulation and sensing of quantum degrees of freedom at the atomic scale. This is crucial in unraveling the important and often complex science leadingto new technologies that emerge at fundamental length scales. Spin is the most important quantum attribute comprising a central role in quantum information as reflected in many implementations of qubits. Spin has emerged as a robust qubit for quantum information because we have learned how to protect the quantum phase of a spin from external influences, such as stemming from electric charge and magnetic fluctuations.By combining our unique domains of expertise in scanning probe development, single atom electron spin resonance, field-effect device fabrication, and theory support, we propose the development of new atomic-scale sensing modalities for quantum systems based on electron spin resonance to realize new breakthroughs in quantum technologies. We will develop functionalized scanning probes with electron spin resonance (ESR) active molecules or devices to obtain atomic resolution for magnetic field sensingand manipulation of electron and nuclear spin systems and apply them to a variety of quantum systems. We will develop fixed adatoms/molecules-based quantum sensors on substrates. To enhance the application space, we will develop methods to generate RF magnetic fields with novel antenna and strip line designs on fabricated substrates for SPM measurements. We will expand the ESR measurement modalities by different transduction mechanism including scanning tunneling microscopy (STM), atomic force microscopy (AFM), and magneto-transport measurements. We will apply ESRSPM measurements to four application spaces which include: flat-band and moir� quantum matter; topological systems, e.g. QHE, FQHE, AQHE, GNR; oxide interfaces, e.g. LAO/STO; and single atom and molecule spin qubits.Together, advances in the above technologies will empower emerging quantum technologies such as quantum computing, quantum simulation, quantum communication and quantum sensing based on solid-state atomic or molecular nanosystems and 2D quantum materials. Our advances will also create new expertise and train a new generation of highly versatile quantum scientists. - Approved for Public Release
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- May 15, 2023
- Source ID
- N000142312477
Entities
People
- Garnett Bryant
Organizations
- Office of Naval Research
- United States Navy
- University of Maryland