Excitonic Quantum Gates Using Nucleotide-Assembled Dye Aggregates

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Solution Overview

Problem

Chromophores and aggregates exhibit non-ideal characteristics for quantum computing, such as strong coupling with vibrational and environmental degrees of freedom leading to phase jitter and difficulty in arranging configurations, which affect the performance of quantum gates.

Innovation Solution

Utilizing a nucleotide architecture to self-assemble chromophores into aggregates, allowing for precise placement and moderate to weak coupling to propagate excitons without energy loss, forming exciton wires and gates for quantum computing.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If chromophores are placed close together to form aggregates for coherent energy transfer, then quantum computing functionality is enabled, but phase jitter increases due to strong coupling with vibrational and environmental degrees of freedom

Engineering Contradiction:

Improvequantum computing functionalityVSAvoidphase stability

Core Design Contradiction:

ReliabilityVSStability of the object's composition

Solution Approach 1:

The patent introduces rigid spacer molecules as intermediaries between chromophores to mediate the coupling interaction. These spacers maintain the necessary proximity for coherent energy transfer while providing a stable, rigid framework that reduces coupling with environmental degrees of freedom, thereby minimizing phase jitter and improving phase stability.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent creates composite structures by combining chromophores with rigid spacer molecules to form chromophore-aggregate complexes. This composite approach allows the system to benefit from both the quantum properties of chromophores and the structural stability of rigid spacers, achieving a balance between coherent energy transfer and phase stability.

Inventive Principle:

Principle #40Composite materials

2Manufacturing precision

If chromophores are arranged in precise configurations for quantum gates, then quantum computing performance improves, but manufacturing complexity increases

Engineering Contradiction:

Improvechromophore placement precisionVSAvoidassembly complexity

Core Design Contradiction:

Manufacturing precisionVSDevice complexity

Solution Approach 1:

The patent incorporates chromophores and rigid spacers into pre-designed molecular architectures before assembly. This preliminary positioning ensures that chromophores are placed at precise relative orientations and distances, eliminating the need for complex post-assembly adjustments and simplifying the overall manufacturing process.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent divides the quantum computing system into modular units consisting of chromophore-spacer complexes. Each module is independently designed and assembled, allowing for standardized manufacturing procedures and reducing the overall complexity of assembling precise chromophore configurations.

Inventive Principle:

Principle #1Segmentation

3Productivity

If excitons are propagated through multiple aggregates, then quantum calculations can be performed, but energy loss increases due to incoherent transfer

Engineering Contradiction:

Improvequantum calculation capabilityVSAvoidenergy loss during transfer

Core Design Contradiction:

ProductivityVSLoss of energy

Solution Approach 1:

The patent optimizes the spacing and orientation parameters between chromophores and aggregates to maintain dipole-dipole coupling in the coherent transfer regime. By carefully controlling these parameters, the system enables exciton propagation through multiple aggregates while minimizing energy loss and maintaining quantum coherence.

Inventive Principle:

Principle #35Parameter changes

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

Enables quantum computing in noisy environments at room temperature with reduced parts count and improved signal propagation, leveraging nucleotide architecture for precise chromophore placement and energy-efficient exciton transfer.

Implementation Method 1

When two molecules are very close to each other such that the transition dipole-dipole coupling is weak to strong, the energy of an excited chromophore can be transferred to a neighboring chromophore without energy loss (coherent energy transfer)

Methodology Applied

Scientific EffectDipole-dipole coupling:

Implementation Method 2

the energy of an excited chromophore can be transferred to a neighboring chromophore without energy loss (coherent energy transfer), in contrast to the usual Förster resonance energy transfer (FRET) where the dipole-dipole coupling is very weak and energy loss occurs in the transfer (incoherent energy transfer)

Methodology Applied

Scientific EffectCoherent energy transfer:

Implementation Method 3

Utilizing a nucleotide architecture to self-assemble chromophores into aggregates, allowing for precise placement and moderate to weak coupling to propagate excitons without energy loss

Methodology Applied

Scientific EffectSelf-assembly: Self-Assembly

Data Source

PatentUS12545700B2Excitonic quantum computing via aggregate-aggregate coupling

Publication Date: 2026.02.10 BOISE STATE UNIVERSITY

AI summary

Using nucleotide architectures to very closely and precisely place chromophores on a nucleic acid template to form dye aggregates that produce quantum coherent excitons, biexcitons, and triexcitons upon excitement to create excitonic quantum wires, switching, and gates that would then form the basis of quantum computation. Creating the various excitons and controlling the timing of the excitons would be performed using light of the corresponding wavelength and polarization to stimulate the corresponding chromophores.