Physics 155 Fourth Homework Assignment

1. Research and summarize the concept of the Qauntum Computer and explain the concept of the Qubit as opposed to the traditional bit. Assess the viability of actually building one of these contraptions and identify some of the main physical/engineering barriers that exist to actually building one of these devices.

2. Research and explain in more detail than given in the lecture pages how a Molecular switch works and what the prospects are for building a molecular computer that makes use of these switches.

3. Explain how a laser diode functions and what advantages this device has for transmitting information through fiber optics.

4. This 8 minute video was produced in 2005. At the time it seemed outrageous. Watch the video and criticially assess whether or not we are, in fact, moving in the direction the video suggests. Note, this is a serious issue and I expect a thoughtful response from you.