JILA Thesis Defense - Maya Miklos
Title: Beyond the Standard Quantum Limit in Atomic Clocks: Spin Squeezing-Enhanced Precision at the 10-18 Level
Speaker: Maya Miklos
Abstract: State-of-the-art optical clock comparisons are approaching a fundamental precision limit due to the quantum fluctuations of uncorrelated particles, the Standard Quantum Limit (SQL). We demonstrate performance beyond the SQL at the 10-18 level in a strontium optical lattice clock integrated with a high-finesse optical cavity. With cavity-based quantum nondemolition measurements, we prepare two independent spin-squeezed ensembles of 30,000 atoms each. A synchronous clock comparison with an interrogation time of 61 ms achieves a metrological improvement of 2.0(2) dB beyond the SQL, after correcting for state preparation and measurement errors. These results establish the most precise entanglement-enhanced clock to date.
Fuente: calendar.colorado.edu
