Simulations predict that Er3+ electron spins in CeO2 can reach second-scale Hahn-echo coherence at ~10 ppb doping and sub-Kelvin temperatures near clock transitions, with ~10 ms expected at 2 K.
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Theoretical comparison of three CZ-gate schemes for 171Yb ions in YVO4 shows photon-interference protocol has best fidelity scaling with cooperativity while magnetic dipolar offers fast deterministic operation if ions can be localized closely.
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Towards second-long electron spin coherence of a telecom quantum emitter in naturally abundant CeO$_2$
Simulations predict that Er3+ electron spins in CeO2 can reach second-scale Hahn-echo coherence at ~10 ppb doping and sub-Kelvin temperatures near clock transitions, with ~10 ms expected at 2 K.
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Comparing the performance of practical two-qubit gates for individual $^{171}$Yb ions in yttrium orthovanadate
Theoretical comparison of three CZ-gate schemes for 171Yb ions in YVO4 shows photon-interference protocol has best fidelity scaling with cooperativity while magnetic dipolar offers fast deterministic operation if ions can be localized closely.