Microwave Electrometry with Rydberg Eletromagnetically Induced Transparency in Vapor Cells

Fan, Haoquan

Microwave Electrometry with Rydberg Eletromagnetically Induced Transparency in Vapor Cells

dc.contributor.advisor	Shaffer, James P
dc.contributor.author	Fan, Haoquan
dc.contributor.committeeMember	Barker, Peter
dc.contributor.committeeMember	Moore-Furneaux, John E
dc.contributor.committeeMember	Abraham, Eric R I
dc.contributor.committeeMember	Parker, Gregory A
dc.date.accessioned	2016-07-25T13:17:50Z
dc.date.available	2016-07-25T13:17:50Z
dc.date.issued	2016-07-20
dc.date.manuscript	2016-06-01
dc.description.abstract	An atom-based approach is presented to detect absolute microwave (MW) electric fields (E-fields). The approach uses Rydberg atoms in vapor cells at room temperature. The MW E-field measurements utilize a bright resonance prepared within an electromagnetically induced transparency (EIT) window. The large transition dipole moments between energetically adjacent Rydberg states enable this method to make traceable E-field measurements with a sensitivity that is several orders of magnitude higher than the current standard for MW E-field measurements. The method can be used to image MW E-field in the near field regime with a subwavelength resolution of $\mathrm{\lambda_{MW}/650}$, where $\mathrm{\lambda_{MW}}$ is the wavelength of the MW E-field. A high accuracy of $\mathrm{1\%}$ has been reached by minimizing the effects of the vapor cell geometry on the measured MW E-field. The dissertation also presents an alternative technique to perform the MW E-field measurement using dispersive properties of the EIT spectrum with a prism vapor cell. Recently, we applied a homodyne detection technique with a Mach Zehnder interferometer to achieve a new sensitivity limit for the MW E-field measurement, $\mathrm{\sim3~\mu Vcm^{-1}Hz^{-1/2}}$. The new sensitivity is one order of magnitude better than our prior best sensitivity presented in Ref. [Nat. Phys. 8, 819 (2012)]. The Rydberg atom-based method is promising to be a new standard for MW E-field measurements and to develop into portable devices in the field of MW technologies.	en_US
dc.identifier.uri	http://hdl.handle.net/11244/44586
dc.language	en_US	en_US
dc.subject	Physics, Atomic.	en_US
dc.subject	Physics, Optics.	en_US
dc.subject	Engineering, Electronics and Electrical.	en_US
dc.thesis.degree	Ph.D.	en_US
dc.title	Microwave Electrometry with Rydberg Eletromagnetically Induced Transparency in Vapor Cells	en_US
ou.group	College of Arts and Sciences::Homer L. Dodge Department of Physics and Astronomy	en_US