Magnetically-Induced Optical Transparency on a Forbidden Transition in Strontium for Cavity-Enhanced Spectroscopy

Abstract

In this work we realize a narrow spectroscopic feature using a technique that we refer to as magnetically-induced optical transparency. A cold ensemble of ${}^{88}$Sr atoms interacts with a single mode of a high-finesse optical cavity via the 7.5kHz linewidth, spin forbidden ${}^1$S${}_0$ to ${}^3$P${}_1$ transition. By applying a magnetic field that shifts two excited state Zeeman levels, we open a transmission window through the cavity where the collective vacuum Rabi splitting due to a single level would create destructive interference for probe transmission. The spectroscopic feature approaches the atomic transition linewidth, which is much narrower than the cavity linewidth, and is highly immune to the reference cavity length fluctuations that limit current state-of-the-art laser frequency stability.

5 pages, 4 figures

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Cited by in corpus (13)

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• Tunable Photon blockade with single atom in a cavity under electromagnetically induced transparency
• Rydberg quantum computation with nuclear spins in two-electron neutral atoms
• Hyperentanglement of divalent neutral atoms by Rydberg blockade
• Nonclassical correlated deterministic single-photon pairs for a trapped atom in bimodal cavities
• Quantum resonant optical bistability with a narrow atomic transition: bistability phase diagram in the bad cavity regime
• Magnetically Induced Optical Transparency With Ultra-Narrow Spectrum
• Magnetic coherent population trapping in a single ion
• Nonclassical correlated optical multistability at low photon level for cavity electromagnetically induced transparency
• Coherence-Assisted Superradiant Laser with Hz Linewidth and $10^{-10}$W Power
• Coupling atoms to cavities with narrow linewidth optical transitions: Applications to frequency metrology