The talk will describe techniques for modulating the amplitude and phase of single photons and biphotons. We also describe a quantum process termed as nonlocal nonlocal modulation. Here, phase modulation of one photon of an entangled pair, as measured by correlation in the frequency domain, may be negated or enhanced by modulation of the second photon.
Biological processes occur on spatiotemporal scales spanning many orders of magnitude. Greater understanding of these processes therefore demands improvements in the tools used in their study. I will first describe our recently developed pulse splitter, which permits faster two photon imaging with reduced photobleaching and photodamage. I will then describe our ongoing efforts to apply adaptive optics to increase the spatial resolution and depth of penetration during in vivo imaging of the mouse neocortex.
Optical interconnects offer significant advantages for future high performance computers. Uses for and progress towards new technologies for optical interconnects are reviewed. Today, fiber-based parallel optical modules are replacing electrical cables. In the next few years, on-card optical interconnects using multimode polymer waveguides will come into use. Eventually, optical interconnects will move onto microprocessor chips using silicon photonics.