Project Info
*Developing a piezoelectric stage for measuring spin qubit dynamics
Meenakshi Singh
msingh@mines.edu
Spin-orbit coupling is an important determinant of spin dynamics in a spin qubit. It depends on complex factors including lateral confinement, valley-orbit configuration, and the atomic-scale structure of the interface. Moreover, it can be dynamically tuned with electric fields, magnetic field direction, and strain. Of these, electric fields, and magnetic fields have been recently studied in both quantum dot and donor spin qubits. Studies controlling strain in spin qubits have not been done. The development of this piezoelectric stage will enable these controlled strain studies of spin qubits.
More Information:
Grand Challenge: Engineer the tools of scientific discovery
1. Gokmen, T.; Shayegan, M., Density and strain dependence ofν=1energy gap in a valley-degenerate AlAs quantum well. Physical Review B 2010, 81, 115336.
2. Shayegan, M.; Karrai, K.; Shkolnikov, Y. P.; Vakili, K.; De Poortere, E. P.; Manus, S., Low-temperature, in situ tunable, uniaxial stress measurements in semiconductors using a piezoelectric actuator. Applied Physics Letters 2003, 83 (25), 5235-5237.
Primary Contacts:
Meenakshi Singh
Anna Osella (graduate student)
Student Preparation
Qualifications
Experience with basic electrical measurements (current, voltage, using coaxial cables, soldering).
TIME COMMITMENT (HRS/WK)
5
SKILLS/TECHNIQUES GAINED
1. Experience with piezoelectric materials
2. Experience in cryogenics
3. Programming in python for data acquisition and instrument control
4. Experience in machining
5. Experience in electrical measurements
MENTORING PLAN
I meet with the student once a week for an individual meeting and once every two weeks for a group meeting. In addition, help in the laboratory is available from me or other senior students as needed. A guideline with reading materials, group norms, and calendar for progress on project is provided in the first week.
PREFERRED STUDENT STATUS
Freshman
Sophomore
Junior