This PhD project is aimed at developing highly sensitive methods for detection of magnetic fields with optically pumped magnetometers. The magnetometer will be based on laser-interrogation of room-temperature cesium atomic vapor. Quantum techniques such as spin-squeezing can be used for improving the magnetic field sensitivity. The project may include work on designing a prototype magnetometer. Possible applications of this magnetometer include measuring bio-magnetic signals from the heart or brain. Such measurements can be done in the magnetically shielded room at Uni. of Nottingham.

The applicant should either have or be about to graduate with a Master’s degree in Physics or another relevant field. Previous experience with experimental quantum physics, lasers, optics, data-acquisition, and electronics will be beneficial.

The successful candidate will be part of a new, young research team lead by Dr. Kasper Jensen. The PhD student will also be part of the “Cold Atom and Quantum Optics Group” at the School of Physics and Astronomy, University of Nottingham, which currently includes 4 faculty members and their teams of postdocs, PhD students, and undergraduate students working on experimental quantum physics.

Interested applicants should send an informal application (including a CV) to the project supervisor Dr Kasper Jensen by email: [email protected]. Applications will be looked at as they come in. A formal application to the University of Nottingham is required at a later stage. Possible start dates for the PhD are: Jan 5th, April 1st, Aug 1st, Sep 1st, Oct 1st in 2020.

 
Previous work related to this PhD project include:
• Detection of low-conductivity objects using eddy current measurements with an optical magnetometer.
by K. Jensen et al. arxiv.org/abs/1905.01661 (2019)
• Magnetocardiography on an isolated animal heart with a room-temperature optically pumped magnetometer.
by K. Jensen et al. in Scientific Reports 8, 16218 (2018)
• Non-invasive detection of animal nerve impulses with an atomic magnetometer operating near quantum limited sensitivity.
by K. Jensen et al. in Scientific Reports 6, 29638 (2016)
• Generation of a squeezed state of an oscillator by stroboscopic back-action-evading measurement.
by G. Vasilakis et al. in Nature Physics 11, 389 (2015), arxiv version: arxiv.org/abs/1411.6289 .
• Quantum noise limited and entanglement-assisted magnetometry.
by W. Wasilewski et al. in Physical Review Letters 104, 133601 (2010), arxiv version: arxiv.org/abs/0907.2453 .

Online information:
School of Physics and Astronomy at the University of Nottingham
Kasper Jensen