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Issue 5, 2020
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On the design of molecular excitonic circuits for quantum computing: the universal quantum gates

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Abstract

This manuscript presents a strategy for controlling the transformation of excitonic states through the design of circuits made up of coupled organic dye molecules. Specifically, we show how unitary transformation matrices can be mapped to the Hamiltonians of physical systems of dye molecules with specified geometric and chemical properties. The evolution of these systems over specific time scales encodes the action of the unitary transformation. We identify bounds on the complexity of the transformations that can be represented by these circuits and on the optoelectronic properties of the dye molecules that comprise them. We formalize this strategy and apply it to determine the excitonic circuits of the four universal quantum logic gates: NOT, Hadamard, π/8 and CNOT. We discuss the properties of these circuits and how their performance is expected to be influenced by the presence of environmental noise.

Graphical abstract: On the design of molecular excitonic circuits for quantum computing: the universal quantum gates

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Article information


Submitted
16 Oct 2019
Accepted
11 Jan 2020
First published
13 Jan 2020

This article is Open Access

Phys. Chem. Chem. Phys., 2020,22, 3048-3057
Article type
Paper

On the design of molecular excitonic circuits for quantum computing: the universal quantum gates

M. A. Castellanos, A. Dodin and A. P. Willard, Phys. Chem. Chem. Phys., 2020, 22, 3048
DOI: 10.1039/C9CP05625D

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    [Original citation] - Published by The Royal Society of Chemistry.

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