CSUF physics graduate Kyle Keane visits his home department and old friends and faculty to share his graduate career experiences as a PhD student at UC Riverside and his thesis work exploring the foundations of quantum measurement.


Kyle compared transitioning from being an undergraduate CSUF physics major to life as a graduate student, finding a group and settling on a PhD project. Kyle worked as an undergraduate with Morty Khakoo and coauthored with Morty's group publications of the work.

Kyle's talk described his thesis and was entitled "Beyond Traditional Quantum Measurement: A Game of Quantum Peek-a-Boo with a Purpose."

The talk was fairly technical and theoretical, but Kyle made beautifully clear that what we learn about measurement in quantum mechanics from textbooks is not the complete story. He stressed that a full collapse of a quantum wavefunction by a measurement on the system is not the only possible outcome, contrary to traditional thinking. His work has helped demonstrate other alternatives, namely, that the wavefunction could in fact just partially collapse, by what has come to be termed a weak measurement.


Within this new framework, Kyle's published work shows that it is possible to undo such weak measurements and return a quantum system to its original wavefunction from before the observation. Moreover, he has demontrated that such measurements can also be used to suppress the effects of noise in a quantum system from the environment, a notion that may have great potential for quantum computing and communication. Their proposal for measurement reversal with noise suppression has recently been demonstrated experimentally with single photons.

Kyle is looking to finish up his thesis this academic year and is currently seeking a post doc position in a related area of nano science with opportunities to teach and be involved in physics education research, exemplified by one of his CSUF mentors Mike Loverude.

Thank you Kyle for an informative and fun visit!