Targeting molecular quantum memory with embedded error correction.

Area of Science:

• Quantum computing hardware
• Molecular magnetism
• Quantum information science

Background:

• Implementing quantum computers demands robust information protection from environmental noise and efficient quantum operations.
• Fully fault-tolerant platforms impose strict coherence and control requirements on hardware.
• A hybrid architecture with connected memories and processing units offers a more feasible approach.

Purpose of the Study:

• To present a supramolecular {Cr7Ni}-Cu system as a potential elementary unit for a hybrid quantum computing architecture.
• To utilize the electronic spin of {Cr7Ni} as a processor and the nuclear spin of Cu as an error-corrected quantum memory.
• To demonstrate the feasibility of this system through realistic simulations.

Main Methods:

• Utilizing a supramolecular {Cr7Ni}-Cu system with distinct electronic and nuclear spin properties.
• Employing realistic simulations to model quantum gate operations and information transfer.
• Implementing microwave pulses for fast gate operations and quantum information swapping.

Main Results:

• The {Cr7Ni} electronic spin serves as a fast quantum processor.
• The Cu nuclear spin acts as a quantum memory with embedded quantum error-correction.
• Simulations confirm rapid gate implementation and efficient information swapping between processor and memory.
• Information storage in the Cu nuclear spin, combined with error correction, dramatically enhances data protection duration.

Conclusions:

• The {Cr7Ni}-Cu system offers a promising hybrid architecture for quantum computing.
• This platform effectively separates fast processing from long-term, error-corrected quantum memory.
• The proposed system demonstrates a viable pathway to overcome coherence limitations in quantum hardware.