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SUMMARY:E. Faraji - Quantum state transfer in protein α-helices.
DTSTART;VALUE=DATE-TIME:20190918T141000Z
DTEND;VALUE=DATE-TIME:20190918T143000Z
DTSTAMP;VALUE=DATE-TIME:20260310T131048Z
UID:indico-contribution-293@cern.ch
DESCRIPTION:The Davydov model describes energy transfer in the hydrogen-bo
 nded spines that stabilize protein α-helices. Its Hamiltonian has three p
 arts: Ĥ =Ĥ ex+Ĥ ph+Ĥ int\, where Ĥ ex is the exciton Hamiltonian
  (describing the internal amide-I excitations of the peptide groups)\, Ĥ
  ph is the phonon Hamiltonian (describing deformational oscillations of th
 e lattice) and Ĥ int is the interaction Hamiltonian (describing the inte
 raction of amide-I excitation with the motions of the lattice sites).\nThe
  primary goal of the thesis project is to go beyond the energy transfer an
 d study the full state transfer along the α-helix by considering the Hami
 ltonian Ĥ  as corresponding to a spin network.\nPreliminary investigatio
 ns on the phase dynamics\, which only account for Ĥ ex\, show the possib
 ility of perfect state transfer between distant qubit.\nWe suspect however
  that the addition of Ĥ ph+Ĥ int can wash out the coherence\, and we a
 re currently estimating the time scale of this effect.\nSubsequently\, we 
 will pursue the same goal by modifying the Davydov model. In particular\, 
 we plan to introduce physically motivated anharmonic terms in Ĥ ph and s
 ite-dependent coupling constants in Ĥ int. These could lead to coherence
  recovery and hence facilitate the quantum state transfer through the prot
 ein α-helices.\n\nhttps://indico.unina.it/event/24/contributions/293/
LOCATION:
URL:https://indico.unina.it/event/24/contributions/293/
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