Parallel and multivalued logic by the two-dimensional photon-echo response of a rhodamine-DNA complex

Barbara Fresch, Marco Cipolloni, Tian Min Yan, Elisabetta Collini, R. D. Levine, F. Remacle*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

29 Scopus citations

Abstract

Implementing parallel and multivalued logic operations at the molecular scale has the potential to improve the miniaturization and efficiency of a new generation of nanoscale computing devices. Two-dimensional photon-echo spectroscopy is capable of resolving dynamical pathways on electronic and vibrational molecular states. We experimentally demonstrate the implementation of molecular decision trees, logic operations where all possible values of inputs are processed in parallel and the outputs are read simultaneously, by probing the laser-induced dynamics of populations and coherences in a rhodamine dye mounted on a short DNA duplex. The inputs are provided by the bilinear interactions between the molecule and the laser pulses, and the output values are read from the two-dimensional molecular response at specific frequencies. Our results highlights how ultrafast dynamics between multiple molecular states induced by light-matter interactions can be used as an advantage for performing complex logic operations in parallel, operations that are faster than electrical switching.

Original languageEnglish
Pages (from-to)1714-1718
Number of pages5
JournalJournal of Physical Chemistry Letters
Volume6
Issue number9
DOIs
StatePublished - 7 May 2015

Bibliographical note

Publisher Copyright:
© 2015 American Chemical Society.

Keywords

  • molecular logic
  • nonlinear optical response
  • parallel processing
  • ultrafast spectroscopy
  • vibronic coherence

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