The lack of a bulk second-order nonlinearity ( χ (2) ) in silicon nitride (Si 3 N 4 keeps this low-loss, CMOS-compatible platform from key active functions such as Pockels electro-optic (EO) modulation and efficient second harmonic generation (SHG). We demonstrate successful induction Si through electrical poling with an externally-applied field to align the Si-N bonds. This alignment breaks ce...

Abstract Superconducting cavity electro-optics presents a promising route to coherently convert microwave and optical photons distribute quantum entanglement between superconducting circuits over long-distance. Strong Pockels nonlinearity high-performance are the prerequisites for high conversion efficiency. Thin-film lithium niobate (TFLN) offers these desired characteristics. Despite signific...

Optical metasurfaces have been extensively investigated, demonstrating diverse and multiple functionalities with complete control over the transmitted reflected fields. Most optical are however static, only a few configurations offering (rather limited) electrical control, thereby jeopardizing their application prospects in emerging flat optics technologies. Here, we suggest an approach to real...

Electro-optic modulators are among the most important building blocks in optical communication networks. Lithium niobate, for example, has traditionally been widely used to fabricate high-speed due its large Pockels effect. Another material, barium titanate, nominally a 50 times stronger r-parameter and would ordinarily be more attractive material choice such or other applications. In practice,...

We present the realization of a ultra fast shutter for optical fields, which allows to preserve a generic polarization state, based on a self-stabilized interferometer. It exhibits high (or low) transmittivity when turned on (or inactive), while the fidelity of the polarization state is high. The shutter is realized through two beam displacing prisms and a longitudinal Pockels cell. This can re...

Reshaping of ultrashort optical pulses at 1.53 ,um by using an integrated acousto-optic tunable filter is reported. Control of the optical pulse shape is accomplished by adjusting the different radio-frequency electrical signals driving the acousto-optic filter. This is to our knowledge the first demonstration of ultrashort pulse shaping using an integrated-optic device and establishes a new ap...