A Triple-Site Gd₃ Carborane Metal-Organic Framework toward Scalable Quantum Computing.

Area of Science:

• Materials Science
• Quantum Computing
• Chemistry

Background:

• Metal-organic frameworks (MOFs) are explored for quantum computing applications.
• Scalable quantum computing requires robust molecular spin qubits.
• Molecular spin qubits in MOFs (quMOFs) offer a promising avenue.

Purpose of the Study:

• To introduce a novel quMOF based on Gadolinium(III) ions.
• To characterize the magneto-thermal properties of the new quMOF.
• To demonstrate its potential for quantum information processing.

Main Methods:

• Synthesis and characterization of the {[(Gd)3(mCB-L)4(NO3)(DMF)x]n·Solv} quMOF.
• Magneto-thermal property analysis using dc/ac magnetometry, XAS, XMCD, and heat capacity.
• Ab initio calculations and pulsed electron paramagnetic resonance (EPR) on diluted analogues.

Main Results:

• The Gd(III)-based quMOF exhibits quantum computing potential.
• Coherence time (Tm) of 0.7 μs and Rabi oscillations up to 50 K were observed.
• Each Gd(III) site acts as an 8-level qudit, enabling a 512-state qudit (up to 9 qubits).

Conclusions:

• The novel triple-site Gd3 quMOF represents a significant advancement in scalable molecular quantum computing.
• This system offers a highly scalable platform for encoding quantum information.
• The findings pave the way for next-generation quantum processors.