All-Photonic Multifunctional Molecular Logic Device

Citations Over TimeTop 1% of 2011 papers

Abstract

Photochromes are photoswitchable, bistable chromophores which, like transistors, can implement binary logic operations. When several photochromes are combined in one molecule, interactions between them such as energy and electron transfer allow design of simple Boolean logic gates and more complex logic devices with all-photonic inputs and outputs. Selective isomerization of individual photochromes can be achieved using light of different wavelengths, and logic outputs can employ absorption and emission properties at different wavelengths, thus allowing a single molecular species to perform several different functions, even simultaneously. Here, we report a molecule consisting of three linked photochromes that can be configured as AND, XOR, INH, half-adder, half-subtractor, multiplexer, demultiplexer, encoder, decoder, keypad lock, and logically reversible transfer gate logic devices, all with a common initial state. The system demonstrates the advantages of light-responsive molecules as multifunctional, reconfigurable nanoscale logic devices that represent an approach to true molecular information processing units.

Related Papers

• → Superimposed molecular keypad lock and half-subtractor implications in a single fluorophore(2009)80 cited
• → Molecular beacon-based half-adder and half-subtractor(2011)38 cited
• → Reconfigurable photonic full-adder and full-subtractor based on three-input XOR gate and logic minterms(2012)30 cited
• → TOAD-Based Frequency-Encoded All Optical XOR Gate, Half Adder, and Half Subtractor(2021)1 cited
• → All Optical XOR Gate Using Quantum Dot Semiconductor Optical Amplifier Based Terahertz Optical Asymmetric Demultiplexer (TOAD)(2021)1 cited