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. 2015 Dec 2;1(9):488–492. doi: 10.1021/acscentsci.5b00338

Figure 2.

Figure 2

Evaluation of the viability of [V(C8S8)3]2– as a qubit in protiated, deuterated, and nuclear spin-free solvents. (a) The Hahn echo decay curve for 1′ at 10 K in CS2 indicates the time frame for the loss of quantum information from the spin qubit. The red line is a biexponential fit that quantifies the time constant for this decay, T2, of 675(7) μs. The fast decay at 2τ < 0.1 ms is attributed to a small percentage of closely spaced [V(C8S8)3]2– moieties that occur due to the inability of CS2 to form a frozen glass. (b) Logarithmic temperature dependence of T2 for [V(C8S8)3]2– in protiated, deuterated, and nuclear spin-free solvents, which illustrates the enormous impact of eliminating nuclear spins on the magnitude of the coherence time.