activity
20092024
most citedLimits of quantum speedup in photosynthetic light harvesting

164 citations · 511 across the 13 of their papers we have counts for

collaborators

13 papers

physics.comp-ph2024★ 2 cited

Performance of wave function and Green's functions based methods for non equilibrium many-body dynamics

Cian C. Reeves, Gaurav Harsha, Avijit Shee +5

Theoretical descriptions of non equilibrium dynamics of quantum many-body systems essentially employ either (i) explicit treatments, relying on truncation of the expansion of the m…

cond-mat.quant-gas2023★ 7 cited

Sympathetic Mechanism for Vibrational Condensation Enabled by Polariton Optomechanical Interaction

Vladislav Yu. Shishkov, Evgeny S. Andrianov, Sergei Tretiak +2

We demonstrate a macro-coherent regime in exciton-polariton systems, where nonequilibrium polariton Bose--Einstein condensation coexists with macroscopically occupied vibrational s…

quant-ph2023★ 4 cited

Enhancement of vibrationally assisted energy transfer by proximity to exceptional points, probed by fluorescence-detected vibrational spectroscopy

Zeng-Zhao Li, K. Birgitta Whaley

Emulation of energy transfer processes in natural systems on quantum platforms can further our understanding of complex dynamics in nature. One notable example is the demonstration…

quant-ph2017★ 1 cited

What is the optimal way to prepare a Bell state using measurement and feedback?

Leigh S. Martin, Mahrud Sayrafi, K. Birgitta Whaley

Recent work has shown that use of quantum feedback can significantly enhance both the speed and success rate of measurement-based remote entanglement generation, but it is generall…

quant-ph2016★ 157 cited

Dynamics of simultaneously measured non-commuting observables

Shay Hacohen-Gourgy, Leigh S. Martin, Emmanuel Flurin +3

In quantum mechanics, measurements cause wavefunction collapse that yields precise outcomes, for non-commuting observables such as position and momentum Heisenberg's uncertainty pr…

quant-ph2015★ 38 cited

Deterministic generation of remote entanglement with active quantum feedback

Leigh Martin, Felix Motzoi, Hanhan Li +2

We consider the task of deterministically entangling two remote qubits using joint measurement and feedback, but no directly entangling Hamiltonian. In order to formulate the most…

physics.chem-ph2015★ 33 cited

Long-range coherent energy transport in Photosystem II

Jan J. J. Roden, Doran I. G. Bennett, K. Birgitta Whaley

We simulate the long-range inter-complex electronic energy transfer in Photosystem II -- from the antenna complex, via a core complex, to the reaction center -- using a non-Markovi…

quant-ph2015★ 16 cited

A probability current analysis of energy transport in open quantum systems

Jan J. J. Roden, K. Birgitta Whaley

We introduce a probability current analysis of excitation energy transfer between states of an open quantum system. Expressing the energy transfer through currents of excitation pr…

quant-ph2014★ 10 cited

Photo-activated biological processes as quantum measurements

Atac Imamoglu, K. Birgitta Whaley

We outline a framework for describing photo-activated biological reactions as generalized quantum measurements of external fields, for which the biological system takes on the role…

quant-ph2013★ 38 cited

Realistic and verifiable coherent control of excitonic states in a light harvesting complex

Stephan Hoyer, Filippo Caruso, Simone Montangero +4

We explore the feasibility of coherent control of excitonic dynamics in light harvesting complexes, analyzing the limits imposed by the open nature of these quantum systems. We est…

quant-ph2012★ 9 cited

Inverting pump-probe spectroscopy for state tomography of excitonic systems

Stephan Hoyer, K. Birgitta Whaley

We propose a two-step protocol for inverting ultrafast spectroscopy experiments on a molecular aggregate to extract the time-evolution of the excited state density matrix. The firs…

quant-ph2011★ 32 cited

Spatial propagation of excitonic coherence enables ratcheted energy transfer

Stephan Hoyer, Akihito Ishizaki, K. Birgitta Whaley

Experimental evidence shows that a variety of photosynthetic systems can preserve quantum beats in the process of electronic energy transfer, even at room temperature. However, whe…

quant-ph2009★ 164 cited

Limits of quantum speedup in photosynthetic light harvesting

Stephan Hoyer, Mohan Sarovar, K. Birgitta Whaley

It has been suggested that excitation transport in photosynthetic light harvesting complexes features speedups analogous to those found in quantum algorithms. Here we compare the d…