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Postdoc - Physics Department (Condensed Matter Experimental Physics)

Recruitment Period

Open date: November 17th, 2020

Last review date: Wednesday, Dec 16, 2020 at 11:59pm (Pacific Time)
Applications received after this date will be reviewed by the search committee if the position has not yet been filled.

Final date: Sunday, Feb 28, 2021 at 11:59pm (Pacific Time)
Applications will continue to be accepted until this date, but those received after the review date will only be considered if the position has not yet been filled.

Position description

Post-Doctoral Position Opening - Sherwin Group
High-power arbitrary waveform generation for pulsed magnetic resonance at 240 GHz and above, with applications dependent on post-doc’s interest.

Background: Coherent manipulation of electron spins at magnetic fields above 7 T (frequencies above 200 GHz) is required for investigations of decoherence in potential quantum bits, excitations of strongly-correlated spin systems, spintronics, and the structure and dynamics of biological macromolecules. However, with current technology, it is exceedingly difficult to generate the sequences of high-power sub-THz pulses that are required for these studies. By “slicing” a sequence of pulses from the ~kW output of UCSB’s MM-wave Free-Electron Laser, we have made significant progress towards filling this technological gap, and have demonstrated the world’s first FEL-powered electron paramagnetic resonance (EPR) spectrometer at 240 GHz. The existing “pulse slicer” uses high-power doubled Nd:YAG lasers to drive Si wafers from the insulating (transmissive) state to the conducting (reflective) state. It occupies two optical tables and is not easily reproduced.

The project: In collaboration with Bridge12, a small company in the Boston area, we have recently been funded to develop a “compact pulse slicer for high-power sub-millimeter waves.” The goal is to leverage advances in inexpensive solid-state laser and semiconductor wafer-bonding technologies to demonstrate a pulse slicer that can eventually be commercialized and deployed for use with existing submillimeter wave sources called gyrotrons to enable pulsed EPR and pulsed dynamic nuclear polarization. The team includes highly-experienced Ph. D. level scientists at UCSB, Bridge12, in the ThorLabs Crystalline Mirror Coatings division.

The job: The successful post-doc will, in close collaboration with the team, develop the optics and electronics for both reflective and transmissive elements of the compact pulse slicer, model the carrier dynamics in the semiconductor switches, perform pulse slicing experiments, and compare performance with theoretical predictions. With the pulse slicer they develop, the post-doc will be encouraged to pursue a scientific direction they are interested in within the broad range of topics under investigation in the Sherwin group. After completion of the post-doctoral job, the post-doc will be well positioned for a wide range of career options, including in academia, industry, and government labs.

Requirements: Applicants must have a Ph. D. in Physics, Applied Physics, Materials, Electrical Engineering, Physical Chemistry, or a related field of science or engineering at the time of application. Experience with developing scientific instrumentation, numerical modeling of physical phenomena, and one or more of the methodologies used in this project (for example, optics, lasers, semiconductors, microwaves, magnetic resonance) is preferred.

Facilities: The successful applicant will have full access to ITST’s Terahertz Facility, the facilities of the Materials Research Labs, NanoTech (UCSB’s Nanofabrication facility), and the California NanoSystems Institute (CNSI).

Environment: UCSB is well-known for its rich, open, and friendly interdisciplinary research environment, and has a unique and growing magnetic resonance community in the Physics, Materials, Chemistry & Biochemistry, and Chemical Engineering Departments. The intellectual environment is enhanced by the Kavli Institute for Theoretical Physics and the recently funded Quantum Foundry.

Interested individuals should submit a cover letter, statement of research, CV, publication list and arrange for 3 letters of reference online at

Review of applications will begin 12/17/2020. Applications will be accepted until 2/28/21, but those received after 12/16/2020 will only be considered if the position has not been filled.

The department is especially interested in candidates who can contribute to the diversity and excellence of the academic community through research, teaching and service.

The University of California is an Equal Opportunity/Affirmative Action Employer and all qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability status, protected veteran status, or any other characteristic protected by law.

Application Requirements

Document requirements
  • Curriculum Vitae - Your most recently updated C.V.

  • Cover Letter

  • Statement of Research

  • Publication list

Reference requirements
  • 3 letters of reference required

Job location

Santa Barbara, California