Quantum-enabled nanoscale temperature sensor via additive transfer single quantum emitters to an optical fiber

We propose to precisely transfer a single-quantum emitter to an optical fiber probe for nanoscale temperature sensing. Successful implementation of the proposed method will help the Department of Defense (DoD) improve its temperature sensing capabilities that are not accessible by using classical methods. This unique technology relies on continuous-wave laser heating of nanosized quantum emitter. The number of quantum emitters can be additively transferred onto any substrate or quantum devices. The whole transfer process can be conducted under ambient conditions without the need of vacuum or high voltage. The quantum-based temperature sensor to be developed will enable super-high spatial resolution of temperature down to sub-100 nm. It will also enable limited-space and remote temperature sensing because of the large bandwidth, low signal attenuation, and small footprint of the optical fiber. The proposed technology will also provide the DoD an affordable and rapid prototyping quantum sensing system, where the precise positioning of a single-photon source is ubiquitous but not been solved properly yet.