Journal
NATURE COMMUNICATIONS
Volume 5, Issue -, Pages -Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/ncomms6304
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Funding
- Deutsche Forschungsgemeinschaft
- Fonds der chemischen Industrie
- Center for Integrated Quantum Science and Technology IQST
- Alexander von Humboldt-Foundation
- Center for Biomolecular Magnetic Resonance at the Goethe University Frankfurt
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The successful development of a quantum computer would change the world, and current internet encryption methods would cease to function. However, no working quantum computer that even begins to rival conventional computers has been developed yet, which is due to the lack of suitable quantum bits. A key characteristic of a quantum bit is the coherence time. Transition metal complexes are very promising quantum bits, owing to their facile surface deposition and their chemical tunability. However, reported quantum coherence times have been unimpressive. Here we report very long quantum coherence times for a transition metal complex of 68 mu s at low temperature (qubit figure of merit Q(M) = 3,400) and 1 mu s at room temperature, much higher than previously reported values for such systems. We show that this achievement is because of the rigidity of the lattice as well as removal of nuclear spins from the vicinity of the magnetic ion.
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