PhD: On-chip hybrid quantum systems: coupling microwaves to magnon-phonon
Monday, 20th September 2021
Physics & Astronomy
Supervisors: Dr Andrew Rushforth, Prof. Tony Kent, Prof. Andrew Armour and
Prof. Andrey Akimov.
This project will be based at the University of Nottingham in the School of
Physics and Astronomy.
The project: will develop an on-chip architecture to couple microwave
photons to magnon – phonon polarons in ferromagnetic nanogratings. Via direct
electrical interfacing with the microwave circuits, we will demonstrate
coherent excitation and detection of hybrid magnon-phonon states.
There is currently much interest in engineering the coupling between
physically distinct quantum systems in order to control, transfer and detect
quantum states, with possible applications including quantum computation,
communication and sensing. Crucial to these technologies is the ability to
transfer the quanta of energy between different physical systems in a coherent
way that preserves the information encoded within the quantum states.
Researchers in the Nottingham Spintronics and Terahertz Acoustics groups,
along with partners at Dortmund Technical University, have recently developed
a method to achieve strong coupling between magnons and phonons, forming a
magnon-phonon polaron, in patterned ferromagnetic nanogratings (see
https: // physics.aps.org/articles/v13/167 and reference F. Godejohann et al.,
Physical Review B, 102, 144438 (2020)). This experimental project will
embed the nanogratings in on-chip microwave resonators and will achieve strong
coupling between the microwave photons and the magnon-phonon polarons. The on-
chip architecture will lend itself to integration with other physical systems
such as optical cavities, acoustic resonators and superconducting qubits (the
building blocks of quantum computers).
The project will involve nanofabrication, experimental measurements using
electrical transport and optical pump-probe methods, and computer simulations
of the microwave, magnetic and acoustic systems.
Eligibility: Candidates should have, or should expect to obtain a 1st or
2:1 undergraduate honours degree in Physics or a related discipline. A good
aptitude for experimental condensed matter physics is highly desirable.
Funding: The studentship comes with funding for tuition fees + stipend
for 3.5 years at Home (UK) student rates, and can begin in October 2021.
If you are interested in applying for this studentship then please contact Dr
Andrew Rushforth (firstname.lastname@example.org) in the first instance.
This studentship is open until filled. Early application is strongly
Information for candidates ( pdf doc )