Exploring the Organometallic Route to Molecular Spin Qubits: The [CpTi(cot)] Case
Luana C de Camargo1, Matteo Briganti2,1, Francielli S Santana1
1Department of Chemistry, Federal University of Parana, Centro Politecnico, Jardim das Americas, 81530-900, Curitiba-PR, Brazil.
Angewandte Chemie (International Ed. in English)
|October 14, 2020
Summary
Titanium sandwich complexes show long coherence times, promising for quantum technologies. Their molecular structure minimizes decoherence, enabling potential applications in quantum sensing.
Area of Science:
- Organometallic Chemistry
- Quantum Information Science
Background:
- Protonated molecules typically exhibit short coherence times due to decoherence.
- Long coherence times are crucial for developing robust quantum bits (qubits).
Purpose of the Study:
- To investigate the coherence time of the [CpTi(cot)] complex.
- To explore its potential for quantum applications.
Main Methods:
- Experimental measurements of coherence time at cryogenic temperatures (4.5 K).
- Ab initio calculations for molecular and crystal packing analysis.
- Assessment of spin-phonon coupling and relaxation mechanisms.
Main Results:
- Achieved a coherence time of 34 μs at 4.5 K in frozen deuterated toluene.
- Intramolecular Ti-H distances balance decoherence sources.
- Low-energy ring rotations have minimal detrimental spin-lattice relaxation due to small spin-phonon coupling.
Conclusions:
- [CpTi(cot)] exhibits a remarkable coherence time for a protonated molecule.
- Its properties make it suitable for single-qubit addressing and quantum sensing.
- Potential for integration with scanning probe microscopy for advanced applications.
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