Welcome to the Manchester Noisy Quantum Systems Group (MaNQS)
We work on the theory of open quantum systems, with an emphasis on developing new methods applicable beyond
standard approximations. Applications range from thermodynamics to solid-state quantum devices and molecular systems.
Senior Lecturer and EPSRC Early Career Fellow, School of Physics & Astronomy, University of Manchester
Adam Stokes (Postdoc) - gauge ambiguities in quantum electrodynamics
Zach Blunden-Codd (PhD student) - open quantum system mappings
Dave Newman (PhD student) - quantum thermodynamics with strong reservoir interactions
Henry Maguire (PhD student) - quantum optics of molecular systems with strong vibrational coupling
Conor McConnell (PhD student) - transport and full counting statistics with strong environmental coupling
Owen Diba (PhD student) - noise in shortcuts to adiabaticity
Jake Iles-Smith (PhD student, Postdoc, now Sheffield)
PhD opportunities: If you are interested in applying for a PhD place with the group then please feel free to get in touch to discuss the possibility. More information on the process can be found here: https://www.manchester.ac.uk/study/postgraduate-research/programmes/list/03161/phd-physics/
Fellowships: We are also interested to hear from strong candidates who are keen to apply to fellowship schemes, such as the UKRI Future Leaders Fellowships, EPSRC Fellowships, Royal Society URFs, the Royal Commission 1851 Fellowship, Marie Curie Fellowships, and Newton International Fellowships.
New Preprint: Thermal enhancement of quadrature squeezing in resonance fluorescence, Jake Iles-Smith, Ahsan Nazir and Dara P. S. McCutcheon, arXiv:1806.08743 – We show that interactions with a thermal environment can enhance the squeezing of light produced within resonance fluorescence from a two-level system.
New Preprint: The reaction coordinate mapping in quantum thermodynamics, Ahsan Nazir and Gernot Schaller, arXiv:1805.08307, to appear as a chapter of: F. Binder, L. A. Correa, C. Gogolin, J. Anders, and G. Adesso (eds.), "Thermodynamics in the quantum regime - Recent Progress and Outlook", (Springer International Publishing) – We review the reaction coordinate approach to open quantum systems at strong coupling and its applications to quantum thermodynamics.
New Preprint: Gauge ambiguities in ultrastrong-coupling QED: the Jaynes-Cummings model is as fundamental as the Rabi model, Adam Stokes and Ahsan Nazir, arXiv:1805.06356 – We show that two-level truncations can lead to ambiguities in the description of ultrastrong-coupling QED, and that a Jaynes-Cummings model can be derived without needing the rotating-wave approximation.
New Paper: A master equation for strongly interacting dipoles, Adam Stokes and Ahsan Nazir, New J. Phys. 20, 043022 (2018) – We derive a Coulomb gauge master equation for two strongly interacting dipoles and apply it to find separation-dependent corrections to the natural emission spectrum of a two-dipole system.
Please see Google Scholar for a full list: https://scholar.google.co.uk/citations?hl=en&pli=1&user=IuYH1HcAAAAJ
Phonon scattering inhibits simultaneous near-unity efficiency and indistinguishability in semiconductor single-photon sources, Jake Iles-Smith, Dara P. S. McCutcheon, Ahsan Nazir, and Jesper M¿rk, Nature Photonics 11, 521 (2017)
Limits to coherent scattering and photon coalescence from solid-state quantum emitters, Jake Iles-Smith, Dara P. S. McCutcheon, Jesper M¿rk and Ahsan Nazir, Phys. Rev. B 95, 201305(R) (2017)
Performance of a quantum heat engine at strong reservoir coupling, David Newman, Florian Mintert and Ahsan Nazir, Phys. Rev. E 95, 032139 (2017)
Anatomy of quantum critical wave functions in dissipative impurity problems, Zach Blunden-Codd, Soumya Bera, Benedikt Bruognolo, Nils-Oliver Linden, Alex W. Chin, Jan Von Delft, Ahsan Nazir, and Serge Florens, Phys. Rev. B 95, 085104 (2017)
For arXiv preprints please see: http://arxiv.org/find/all/1/all:+AND+nazir+quantum/0/1/0/all/0/1