Reducing decoherence in optical and spin transitions in rare-earth-metal-ion–doped materials
Reducing decoherence in optical and spin transitions in rare-earth-metal-ion–doped materials
In many important situations, the dominant dephasing mechanism in cryogenic rare-earth-metal-ion--doped systems is due to magnetic field fluctuations from spins in the host crystal. Operating at a magnetic field where a transition has a zero first-order Zeeman (ZEFOZ) shift can greatly reduce this dephasing. Here we identify the location of …