Four-wave mixing

About: Four-wave mixing is a research topic. Over the lifetime, 7530 publications have been published within this topic receiving 112702 citations.

Spatially structured transparency and transfer of optical vortices via four-wave mixing in a quantum-dot nanostructure

Abstract: We propose a scheme to generate structured light using a medium consisting of semiconductor quantum dots via four-wave mixing (FWM). We consider a four-level quantum-dot structure where two strong electromagnetic fields couple upper-level biexciton transitions, whereas a weak field is applied to one of the ground-level exciton transitions. A weak signal field is generated, corresponding to a second ground-level exciton transition; thus the overall configuration transforms into a closed-loop diamond-type shape. To realize a spatially dependent modulating quantum-dot medium, we consider strong coupling fields as structured lights and investigate different regions of spatially structured electromagnetically induced transparency via absorption of the generated signal field. The azimuthal phase-dependent modulation of the absorption profile of the generated signal field is the key factor behind the creation of structured light. In addition, we also demonstrate transfer of orbital angular momentum (OAM) of the control beam to the generated beam through the FWM process and study the effect of phase mismatch on efficiency of the OAM transfer.

High-efficiency degenerate four-wave mixing of 1.06-μm radiation in silicon

Abstract: We report detailed experimental results on degenerate four-wave mixing of 1.06-μm laser radiation in silicon. Using ~100-mJ pump pulses of 15-nsec duration from a Q-switched Nd:YAG laser at intensities of ~6.8 MW/cm2, we obtained an energy conversion of over 150% for the probe-to-signal reflection.

Octave-wide phase-matched four-wave mixing in dispersion-engineered crystalline microresonators

Abstract: This erratum presents the corrections to the Letter published in Opt. Lett.44, 3146 (2019)OPLEDP0146-959210.1364/OL.44.003146.

Spurious four-wave mixing in two-pump fiber-optic parametric amplifiers

Abstract: We present an experimental study on four-wave mixing (FWM) between two signals within a two-pump fiber-optical parametric amplifier (2P-FOPA). We demonstrate that the intensity of FWM spurious tones depend strongly on the signal power and length of the nonlinear medium and present two regimes as a function of the pumps' power. We also compare the amounts of FWM as a function of channel spacing in the 2P-FOPA with or without pumps and show that the presence of parametric gain enhances FWM over a broad spectral range.

Microwave-to-optical conversion via four-wave mixing in a cold ytterbium ensemble

Abstract: Interfacing superconducting qubits with optical photons require noise-free microwave-to-optical transducers, a technology currently not realized at the single-photon level. We propose to use four-wave mixing in an ensemble of cold ytterbium (Yb) atoms prepared in the metastable ``clock'' state. The parametric process uses two high-lying Rydberg states for bidirectional conversion between a 10 GHz microwave photon and an optical photon in the telecommunication E-band. To avoid noise photons due to spontaneous emission, we consider continuous operation far detuned from the intermediate states. We use an input-output formalism to predict conversion efficiencies of $\ensuremath{\approx}50%$ with bandwidths of $\ensuremath{\approx}100$ kHz.