BitcoinQ Quantum Computing Project

BitcoinQ is a community-driven quantum computing project with a 5-10 year timeline, aiming to raise 100-500 Bitcoins per year through crowdfunding to develop a quantum computer.

Project Goal

The primary goal is to upgrade approximately 4 million old Bitcoin addresses using P2PK (direct public key) to quantum-resistant addresses.

Potential Profits

50%, or 2 million Bitcoins, will be charged as a technical service fee. This fee will be distributed as follows:

• 50% of the technical service fee will be airdropped to crowdfunding participants
• 50% will be used as administrative fees

Vision

This project represents a pioneering effort to future-proof Bitcoin against quantum computing threats while creating a sustainable funding model for quantum computing research and development.

Introduction to NV Centers

Diamond Nitrogen-Vacancy (NV) centers are point defect structures formed in the diamond lattice where a nitrogen atom replaces a carbon atom, creating a vacancy adjacent to the nitrogen. NV centers exhibit C₃ᵥ symmetry along the "nitrogen-vacancy" axis.

Physical Properties

Electron Spin Energy Levels

The electron spin energy levels in NV centers can be manipulated using microwave fields. When the microwave energy matches the energy difference between spin levels, electrons in the lower energy state absorb microwave energy and undergo resonant transitions, changing the electron population distribution among the energy levels.

Zero-Field Splitting Effect

In the absence of an external magnetic field, the ground state energy levels of the diamond NV center split between the 0 state and the ±1 states, known as zero-field splitting. This effect, arising from the nuclear spins surrounding the NV center, can be utilized for temperature measurement.

Application Areas

• Magnetic Sensors: Magnetic field sensing technology based on diamond NV centers can theoretically achieve Tesla-level magnetic measurements
• Temperature Sensors: Diamond NV centers can serve as high-performance temperature sensors
• Electric Field Sensors: High-sensitivity electric field detection using spin properties
• Quantum Computing: NV centers are ideal carriers for quantum bits

Spin Sensing Technology

The main methods for spin information detection include:

• ODMR: Optically Detected Magnetic Resonance
• Ramsey Sequence: For measuring static magnetic fields
• Spin Echo Sequence: For AC magnetic detection

Integration and Industrialization

Miniaturization and integration are essential for solid-state atomic spin sensing technology. Two main approaches:

1. Modular Integration: Integration of optical, microwave, and information processing systems
2. Chip-level Integration: Using CMOS processes for quantum state preparation, control, and readout