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Paul Brumer

Paul Brumer

Academic Title: University Professor

Phone: 416-978-3569

Office: LM 421B


Research Homepage: http://www.chem.utoronto.ca/~cptg/


Our research group is currently focusing attention on several problems in theoretical chemical physics. Amongst these are:

  1. Controlling Molecular Dynamics with Lasers: Controlling Molecular Processes with lasers is one of the most interesting of challenges in chemical physics. Our research group has been at the forefont of this area ever since its inception. We have applied our coherent control ideas to a wide variety of physical processes, including photodissociation, bimolecular collisions, current generation in molecular wires, nanodeposition of molecules on surfaces, transport down a spin chain, radiationless transitions, etc. Continuing efforts focus on unsolved control problems in molecular dynamics, such as laser control in open systems.
  2. Quantum Dynamics on the Nanoscale: Quantum mechanics will participate in typical molecular processes if the system maintains matter coherence despite its interaction with an external environment. Efforts to understand and utilize quantum effects on the nanoscale, where decoherence effects are expected to be large, are underway. Of particular interest are (i) the theory of recent large-molecule experiments (e.g. in photosynthetic processes) that show unexpected degrees of electronic coherence, and (ii) the use of quantum coherence in semiconductor devices.
  3. Issues in Quantum Mechanics: Classical mechanical ideas have played an important role in Chemistry. We continue to explore basic issues in quantum mechanics and their relationship to classical mechanics. Included are topics such as the origin of the Born rule, the underlying physics of the basic commutation relations, symmetry principles in quantum and classical dynamics, decoherence and entanglement, desciptions of open system dynamics in terms of simplified approaches, and classical and quantum chaos.

Selected Publications

"Open System Perspective on Incoherent Excitation of Light Harvesting Systems", L.A. Pachon, J.D. Botero and P. Brumer, J. Phys. B: At. Mol. Opt. Phys. 50, 184003/1-13 (2017)

"Laser-induced Molecular Alignment in the Presence of Chaotic Rotational Dynamics", J. Floss and P. Brumer, J. Chem. Phys. 146, 124313/1-11 (2017)

"Interfering Resonances as a Unifying Mechanism in the Adaptive Feedback Control of Radiationless Transitions", C. Lavigne and P. Brumer, J. Chem. Phys. 147/1-8, 114107 (2017)

"An Approach to `Quantumness' in Coherent Control", T. Scholak and P. Brumer, Adv. Chem. Phys. vol. 162, 39 - 136 (2017)

"Localized Operator Partitioning Method for Electronic Excitation Energies in the Time-dependent Density Functional Formalism", J. Nagesh, M. J. Frisch, P. Brumer and A. F. Izmaylov, J. Chem. Phys. 145, 244111/1-8 (2016)

"Coherent Dynamics of V-type Systems Driven by Time-Dependent Incoherent Radiation", A. Dodin, T. V. Tscherbul and P. Brumer, J. Chem. Phys. 145, 244313/1-12 (2016)

"Spin-orbit Interactions and Quantum Spin Dynamics in Cold Ion-Atom Collisions", T. V. Tscherbul, P. Brumer and A. A. Buchachenko, Phys. Rev. Lett. 117, 143201/1-5 (2016)

"Quantum  Dynamics  of  Incoherently  Driven  V-type Systems: Analytic  Solutions  beyond  the  Secular  Approximation",  A. Dodin,  T.  V.  Tscherbul  and  P. Brumer, J. Chem. Phys. 144, 244108/1-13 (2016)

"Transform-Limited-Pulse  Representation  of  Excitation  with Natural Incoherent Light", A. Chenu and P. Brumer, J. Chem. Phys. 144, 044103/1-6 (2016)

Classical  Approach  to  Multichromophoric  Resonance  Energy Transfer", S. Duque, P. Brumer and L. A. Pachon, Phys. Rev. Lett.  115,  110402/1-5  (2015)