PhD Studentship: Quantum Plasmonics with Molecules

This PhD project explores the intersection of quantum plasmonics and molecular photonics, aiming to measure quantum light emission from molecules confined within plasmonic optical cavities. Plasmonic cavities, with their ability to confine light at subwavelength scales, enable strong coupling between electromagnetic fields and molecular excitations [1-5]. This coupling can lead to the generation of quantum light, such as single photons or entangled states, critical for quantum communication and sensing applications.

The project involves the development of plasmonic optical cavity configurations, optimized for coupling with molecular vibrational and electronic transitions. By embedding selected organic or hybrid molecules into these cavities, the research will probe the emergence of quantum light through processes like single-photon emission or photon antibunching.

A key focus will be temperature-dependent studies, spanning cryogenic to ambient conditions, to understand the role of thermal fluctuations in modulating the molecule-cavity interaction and quantum light generation. Techniques such as photoluminescence spectroscopy and time-resolved photon counting will be employed.

The outcomes are expected to provide insights into the fundamental dynamics of molecule-plasmon coupling and contribute to the development of molecular quantum light sources, paving the way for advancements in nanoscale quantum optics and plasmonic quantum technologies.

Applicants should have completed (or closer to completion) their undergraduate degree in Physics, Material Science, Physical Chemistry or related Physical Sciences (preferably with first-class honours or equivalent). Strong analytical and experimental skills are desirable. The project's specifics will be determined in collaboration with the successful candidate, tailoring the research to their interests.

The project will be conducted within the research group led by Dr. Rohit Chikkaraddy (https://www.birmingham.ac.uk/staff/profiles/physics/chikkaraddy-rohit.aspx), based at the Metamaterials and Nanophotonics Research Centre (https://www.birmingham.ac.uk/research/activity/physics/quantum/metamaterials/index.aspx) in the School of Physics and Astronomy at the University of Birmingham, UK.

The University is actively committed to promoting equality, diversity and inclusion and encourages applicants from all sections of society. In line with the Department’s Athena SWAN programme, we particularly encourage female candidates to apply.

Funding, awarded on a competitive basis, is available to UK/EU nationals, covering tuition fees and providing a living stipend for 3.5 years. Non-EU candidates with the appropriate qualifications will be considered.

Apply online via the above ‘Apply’ button and clearly specify the project's title, the name of the supervisor (Dr. Rohit Chikkaraddy), and the Metamaterials and Nanophotonics Research Centre. The application deadline is January 10, 2025.

For information on available funding, application guidance, or any other informal inquiries, please contact Dr. Rohit Chikkaraddy at r.chikkaraddy@bham.ac.uk.

References:

[1] R. Chikkaraddy, et al. "Single-molecule mid-infrared spectroscopy and detection through vibrationally assisted luminescence", Nat. Photon. 17, 865–871 (2023).

[2] R. Chikkaraddy, et al. "Mid-infrared-perturbed molecular vibrational signatures in plasmonic nanocavities". Light: Science & Applications, 11, 19 (2022).

[3] A. Xomalis, X. Zheng, R. Chikkaraddy, et al. "Detecting mid-infrared light by molecular frequency upconversion in dual-wavelength nanoantennas". Science, 374, 1268 (2021).

[4] R. Chikkaraddy, et al. "Single-molecule strong coupling at room temperature in plasmonic nanocavities", Nature, 535, 127, (2016).

[5] R. Chikkaraddy, Single molecule ready to couple. Nat. Phys. 20, 694–695 (2024).

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