Quantum interference of light

Topic title: Quantum interference of light
Abstract:
Quantum physics has risen from an approach to understand the fundamentals of nature to a property to be harnessed by numerous technological applications that extend to our daily life. The discrete spectra of atoms and molecules is perhaps the most visible aspect of quantum physics, yet there are other aspects that are so subtle that have yet to be fully harnessed. Among them is quantum superposition, or the ability of a system to potentially adopt distinct properties simultaneously. Beyond its philosophical implications, such as negating realism, that any object should have well-defined intrinsic properties, superposition is rising to be at the core of the emerging technology of quantum information, which could potentially overcome us in the future with a new form of computing and other technologies. Superposition manifests most visibly via interference, and photons, quantized packets of light, can be used to show it vividly through interference. From photons interfering with themselves, to biphotons, or twin photons entangled in peculiar ways, experiments at the single-photon level help us understand the subtle aspects of superposition. They constitute a convenient platform for learning about superposition and for teaching it to a future workforce.

Bio:

Enrique “Kiko” Galvez obtained a Ph.D. in physics from the University of Notre Dame, Indiana, in 1986. He has been a member of the faculty at Colgate University, Hamilton, New York, US since 1988—currently the Charles A. Dana Professor of Physics and Astronomy. His research interests include atomic and optical physics and physics education. Recent research projects include studies of light in complex scalar and vector modes, and photon entanglement. Educational projects include modernizing the introductory physics curriculum and the development of new laboratories to teach about light and quantum mechanics. He has published widely and co-authored three textbooks. He is a Fellow of Optical Society of America and has received two awards from the American Physical Society.

Moderator:

Professor Javier Orduz of Baylor University, coordinator of QMexico.