1 research outputs found
Endohedral Metallofullerene as Molecular High Spin Qubit: Diverse Rabi Cycles in Gd<sub>2</sub>@C<sub>79</sub>N
An anisotropic high-spin qubit with
long coherence time could scale
the quantum system up. It has been proposed that Grover’s algorithm
can be implemented in such systems. Dimetallic aza[80]Âfullerenes M<sub>2</sub>@C<sub>79</sub>N (M = Y or Gd) possess an unpaired electron
located between two metal ions, offering an opportunity to manipulate
spin(s) protected in the cage for quantum information processing.
Herein, we report the crystallographic determination of Gd<sub>2</sub>@C<sub>79</sub>N for the first time. This molecular magnet with a
collective high-spin ground state (<i>S</i> = 15/2) generated
by strong magnetic coupling (<i>J</i><sub>Gd‑Rad</sub> = 350 ± 20 cm<sup>–1</sup>) has been unambiguously validated
by magnetic susceptibility experiments. Gd<sub>2</sub>@C<sub>79</sub>N has quantum coherence and diverse Rabi cycles, allowing arbitrary
superposition state manipulation between each adjacent level. The
phase memory time reaches 5 ÎĽs at 5 K by dynamic decoupling.
This molecule fulfills the requirements of Grover’s searching
algorithm proposed by Leuenberger and Loss