Temperature-Modal Double-Walled Carbon Nanotube Device

Overview

The same double-walled carbon nanotube structure operates in three distinct regimes, selected purely by temperature, with no structural modification whatsoever. It is one fabricated device that changes character as it is cooled.

In the warm regime it is the classical photon-gated balanced-ternary switch of Thatte1, producing deterministic trit values with digital-grade signal-to-noise ratio. In an intermediate cryogenic regime, phonon scattering is suppressed far enough that the electron phase-coherence length exceeds the length of the tube, and quantum interference effects emerge — a mesoscopic, quantum-enhanced mode.

In the coldest regime, the two degenerate conducting channels of the inner metallic nanotube provide the basis for a qutrit: a three-level quantum unit, native to a structure that is already ternary at room temperature. Mode boundaries, coherence lengths, and noise figures are shared under mutual NDA.

Key Innovations

• Three operating modes in one unmodified atomic structure, selected by temperature
• Classical deterministic ternary switching in the warm regime
• Mesoscopic regime with electron phase coherence exceeding the device length
• Qutrit regime — native three-level quantum information, not an encoded two-level system
• A single fabrication process spanning classical and quantum computing
• Ternary logic and quantum qutrits sharing one physical substrate

Why It Matters

Quantum computing platforms are normally built as a separate technology from classical logic, with their own materials, fabrication, and packaging. The bridge between them is an interface problem that consumes enormous effort.

Here there is no bridge to build, because there is no boundary to cross: the same two concentric nanotubes are a ternary switch when warm and a qutrit when cold. A three-level quantum unit is also the natural match for balanced ternary logic, so the classical and quantum layers of the stack speak the same arithmetic.

Disclosure

This page describes the architecture and purpose of the invention. Specific parameters — dimensions, thresholds, wavelengths, code assignments, and simulation figures — together with the complete claim set are shared under mutual NDA. Contact manish@manitlab.org to request access.

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