Chip-based photonic devices are doing for optics what integrated circuits have done for electronics. By directly combining many individual components in a compact, scalable and robust way, photonic chips open the possibility for creating optical and electro-optical devices that could not be practical with discrete components. The applications for this...
Small hydrocarbons and their oxygenated derivatives are critical to atmospheric organic aerosol formation and growth. Secondary organic aerosols (SOAs) constitute a significant portion of total atmospheric organic aerosols, and are often generated through the oxidation of biogenic volatile organic compounds (VOCs) such as isoprene, -pinene, and -caryophyllene. Interfaces of SOA...
The nonlinear optical technique, second harmonic generation (SHG), is applied here for the first time to probe single and double strand DNA (ssDNA and dsDNA) chemically attached to fused quartz/water interfaces. DNA interfaces are often a critical functional component of biodetection, thus, the development of molecular biosensors requires a thorough...
Recent advances in optical switching have yielded an all-fiber, all-optical, device capable of routing single-photon quantum signals at high rates (≈25 GHz), with almost immeasurably small degradation of the quantum state[1, 2, 3]. These switches can facilitate complex quantum networking and quantum information processing schemes. However, the complexity of these...
Electronic and vibrational correlations report on the dynamics and structure of molecular species, yet revealing these correlations experimentally has proved extremely challenging. Here, we demonstrate a method that probes correlations between states within the vibrational and electronic manifold with quantum coherence selectivity. Specifically, we measure a fully coherent four-dimensional spectrum...
Quantum frequency conversion (QFC) of photonic signals preserves quantum information while simultaneously changing the signal wavelength. A common application of QFC is to translate the wavelength of a signal compatible with the current fiber-optic infrastructure to a shorter wavelength more compatible with high-quality single-photon detectors and optical memories. Recent work...