- Browse by Author
Browsing by Author "Tew, David P."
Now showing 1 - 1 of 1
Results Per Page
Sort Options
Item Simulating the vibrational quantum dynamics of molecules using photonics(Nature, 2018) Sparrow, Chris; Martín-López, Enrique; Maraviglia, Nicola; Neville, Alex; Harrold, Christopher; Carolan, Jacques; Joglekar, Yogesh N.; Hashimoto, Toshikazu; Matsuda, Nobuyuki; O'Brien, Jeremy L.; Tew, David P.; Laing, Anthony; Physics, School of ScienceAdvances in control techniques for vibrational quantum states in molecules present new challenges for modelling such systems, which could be amenable to quantum simulation methods. Here, by exploiting a natural mapping between vibrations in molecules and photons in waveguides, we demonstrate a reprogrammable photonic chip as a versatile simulation platform for a range of quantum dynamic behaviour in different molecules. We begin by simulating the time evolution of vibrational excitations in the harmonic approximation for several four-atom molecules, including H2CS, SO3, HNCO, HFHF, N4 and P4. We then simulate coherent and dephased energy transport in the simplest model of the peptide bond in proteins—N-methylacetamide—and simulate thermal relaxation and the effect of anharmonicities in H2O. Finally, we use multi-photon statistics with a feedback control algorithm to iteratively identify quantum states that increase a particular dissociation pathway of NH3. These methods point to powerful new simulation tools for molecular quantum dynamics and the field of femtochemistry.