Quantum Dot Photonics: Revolutionizing Light Control
Quantum dots, which are nanoscale semiconductor particles, offer unparalleled control over light generation and manipulation. They have high quantum yields and large absorption cross-sections, enabling stable and efficient photon generation. Moreover, quantum dots can produce entangled photon pairs through biexciton decay, which is useful for computing and communication.
Advances in colloidal synthesis and ligand engineering have enabled precise control over quantum dot size distribution, capping ligands, and surface defects. This has dramatically improved their photophysical properties, making it possible to produce quantum dots with near-unity fluorescence quantum yields and ultralow blinking.
Lithium Tantalate Photonics: A New Era in Optical Computing
Lithium tantalate, a ferroelectric material with a high refractive index and a wide transparency range, is making significant strides in the field of photonics. Lithium tantalate photonic integrated circuits (PICs) are gaining popularity due to their high volume manufacturing capabilities, offering a unique combination of high optical quality, low loss, and high damage threshold.