About Quantum Fuse

Quantum Fuse is a theoretical and experimental project exploring the feasibility of creating a two-qubit quantum computer using accessible and affordable components. Our unique approach utilizes quantized mechanical vibrations within synthetic quartz crystals to serve as our qubits. The project is built around an ICE40UP5K-B-EVN FPGA, a green diode laser, and an AD9850 DDS module.

Join us in this groundbreaking endeavor! Fork the project on GitHub, build your own Q-Resonator node, and contribute to advancing quantum computing. Visit the repository at ingen0s/quantumfuse.

Example of an 823 mHz - 100 Hz pulse

The Q-Resonator

The Q-Resonator is the core of this project's hypothesis. We are investigating whether the quantum mechanical properties of synthetic quartz crystals can be leveraged to create and control qubits. The project aims to use the green diode laser to excite the quartz's vibrations and the DDS module to precisely control the frequencies involved, manipulating the quantum states.

Explore the detailed theoretical framework and ongoing notes: Q-Resonator Documentation ⚛️

Michelson Interferometer

This project builds a functional Michelson interferometer to measure extremely small changes in distance, relying on the interference pattern of a green laser. The ICE40UP5K-B-EVN FPGA will be used to read and interpret the light intensity from a photodetector, allowing you to quantify changes in the optical path in units of a fraction of a wavelength.

Learn more about our interferometer setup: Michelson Interferometer

ADR Cryostat: Millikelvin Environment

To achieve the near-absolute-zero temperatures (target 0.1–1 K) necessary to eliminate thermal noise and observe the quantum mechanical properties of the quartz crystal qubits, we require an Adiabatic Demagnetization Refrigerator (ADR) cryostat.

The full build guide, including components, assembly instructions, and operational procedure, is detailed here: ADR Cryostat Build Guide 🥶

Cryostat Outline

• Objective: Construct a compact, single-stage ADR cryostat to cool the quartz crystal to below 4 K (target ~0.1–1 K).
• Core Components: Paramagnetic salt pill (chrome alum), 2–4 T magnet system (Neodymium blocks or solenoid), LHe Dewar (~4 K pre-cooling), Superconducting NbTi heat switch, and Cernox temperature sensor.
• Assembly: Involves fabricating the salt pill, constructing the cold stage with OFHC copper, and integrating the high-vacuum and magnet systems.
• Operation (Single-Shot Cycle): Pre-cool to 4 K -> Magnetize (Isothermal) -> Isolate (Switch OFF) -> Demagnetize (Adiabatic) to achieve base temperature.
• Performance Target: Base Temperature of 0.1–1 K with a hold time of 10–60 minutes per run.

Code & Resources

The code base provides the necessary firmware for the project's electronics. The primary component is a web server running on an ESP32-S3 microcontroller that controls the AD9851 DDS generator. This allows for precise control over the frequencies and timings required for our experiments via a simple web interface.