Quantum Diamond Single Spin Spectroscopy
Optical Detection Magnetic Resonance (ODMR)
Compared with traditional paramagnetic resonance and nuclear magnetic resonance, it has the advantages that the initial state is the pure quantum state, long spin-quantum coherence time, powerful quantum manipulation, and intuitive results of quantum collapse experiments.
High-quality diamond probe fabrication, including the
growth of ultra-pure diamond, ion injection, and micro-nano
processing process, mastering the core process of preparing
coherence time and high stability diamond quantum sensors.
Ultra-high spatial resolution for quantum precision measurement
of the magnetic field, electric field, and temperature
at the nanometer scale.
High-fidelity quantum state manipulation.
With 50 picosecond time precision broadband high-power
microwave modulation components to achieve low-noise,
efficient and fast quantum coherent manipulation of spin.
Long unattended experiments can be conducted.
Intelligent control software and signal acquisition system, including
automatic experiment of color center,
automatic calibration of the optical path,
automatic adjustment of the magnetic field, etc.
The microwave pulse can be used to control the flipof the spin state of the NV center to form a quantum gate. The operation fidelity of the single-qubit quantum gate can reach 99.99 % through a sophisticated design of the pulse sequence. This is the current record of single-qubit quantum gate fidelity and reaches a fault tolerance threshold.
◆ Quantum Algorithm
Quantum algorithm uses many fundamental properties of quantum mechanics, such as quantum superposition, parallelism, entanglement, measurement collapse, etc. These physical properties bring great help to the improve-ment of computational eﬃciency and form a brand-new computational mode - quantum algorithm. D - J algorithm and large number factorization algorithm were demonstrated using NV center, which is an essential step towards realizing room temperature quantum computer
◆ Quantum Error Correction
No matter in classical computation or quantum computation, errors are always inevitable. In classical information processing, codingis often used to reduce the probability of error. Similarly, in quantum computation, the probability of error occurrence can also be reduced through quantum error correction. Electron spins in diamond can be operated quickly, while nuclear spins have longer coherence time. The hybrid system consisting of electronic spin and nearby nuclear spin is used to demonstrate the quantum error correction process, which is a crucial step towards the scalability of quantum computation.
Corporate Social Responsibility
Electron Paramagnetic Resonance