Solid-state cavity quantum electrodynamics with spin ensembles
Name
wang-hanfengw-phd-eecs-2025-thesis.pdf
Description
Thesis PDF
Size
8.78 MB
Format
Adobe PDF
Checksum (MD5)
e365ad79b431880c1b62d3d213920ee7
Author(s)
Wang, Hanfeng
Advisor(s)
Englund, Dirk
Date Issued
May 2025
Publisher
Massachusetts Institute of Technology
Abstract
Quantum sensors have the potential to operate at fundamental physical performance limits. Among various quantum sensing platforms, solid-state spin emitters stand out due to advantageous characteristics such as room-temperature spin polarization and readout, atomic-scale spatial resolution, and extended coherence times. Despite these strengths, traditional optical detection methods exhibit low readout fidelity in solid-state ensembles, severely limiting their achievable sensitivity. This thesis addresses this limitation by coupling a solid-state emitter ensemble to a microwave cavity, forming a cavity quantum electrodynamics system. Our approach eliminates the need for photon collection required by conventional optical readout methods, and the resulting strongly coupled system allows efficient cavity-based probing of the solid-state spin ensemble. By exploiting the hybrid quantum system with cavity quantum electrodynamics, we achieve record-high sensitivity for solid-state quantum sensors, representing a substantial advancement toward achieving fundamental sensing limits.
MIT Department
Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science
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In Copyright - Educational Use Permitted
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