Zachary Levine

1 month ago | nist.gov | Zachary Levine

Rubidium vapor cells play a key role in contemporary quantum optics since they have strong nonlinear interactions with low-power incident laser light. The simplest nonlinear interaction is the Kerr effect. Although most calculations concentrate on the unsaturated Kerr effect, the saturated Kerr effect has been measured in many material including 85Rb and 87Rb vapor.

Mar 3, 2025 | dx.doi.org | Bryan Bogin |Zachary Levine

Aug 21, 2024 | biorxiv.org | Zachary Levine |Guy Lutsker |Anastasia Godneva |Adina Weinberger

AbstractBackgroundThe genetic underpinnings of cardiovascular disease remain elusive. Contrastive learning algorithms have recently shown cutting-edge performance in extracting representations from electrocardiogram (ECG) signals that characterize cross-temporal cardiovascular state. However, there is currently no connection between these representations and genetics.

Aug 1, 2024 | nist.gov | Zachary Levine

When an optical beam passes through a thin slice of a homogeneous material, the change of its phase and amplitude is characterized by its linear and nonlinear susceptibility, the latter also known as the hyperpolarizability. The standard method for measuring the nonlinear susceptibility is the $Z$-scan. This widely-used method is sometimes applied outside of its range of validity, leading to systematic errors.

Jul 31, 2024 | link.aps.org | Zachary Levine

When an optical beam passes through a thin slice of a homogeneous material, the change of its phase and amplitude is characterized by the material's linear and nonlinear susceptibility, the latter also known as the hyperpolarizability. The standard method for measuring the nonlinear susceptibility is the Z scan. This widely used method is sometimes applied outside of its range of validity, leading to systematic errors.