Event
Apr 16, 2019 3:45 pm -
Nielsen Hall 170 -
Colloquium
Grant Biedermann
- Sandia National Labs
Growing complexity in quantum metrology with neutral atom spins
The spin degrees of freedom of ultracold neutral atoms in their ground electronic states provide a natural platform for precision metrology of inertial forces. Given their long coherence times, weak interactions with laboratory environments, and our ability to control them with magneto-optical fields, numerous experiments have shown record-breaking advances in both applied and scientific pursuits. Beyond this, the recent introduction of strong, entangling interactions via Rydberg states, offers the allure of creating optimal quantum many-body states for metrology. A central theme in our research is to expand the metrological utility of atom interferometers with novel techniques, wherein we have investigated a high-data rate technique for dynamic scenarios, and a single atom force sensor. Expanding this theme further, we have developed a Rydberg-dressed interaction between the spins of individually controlled cesium atoms, which has the advantage of being both tunable and strong, and can enable complex many-body dynamics. We employ this interaction to produce entanglement between neutral atoms and investigate the potential of this technique for high-fidelity quantum control and measurement.
