We are at the very beginning of time for the human race... there are tens of thousands of years in the future. Our responsibility is to do what we can, learn what we can, improve the solutions, and pass them on.
Richard P. Feynman
James P. Clemens Faculty Profile »

 

Research Area:
Quantum information and quantum optics


Experiment / Theory:
Theory


Research Summary:
My research interests lie at the interface between quantum optics and quantum information.  Quantum information deals with information processing tasks such as key distribution, teleportation, and quantum computing which rely on the power of entangled states – states with stronger correlations than are allowed classically -- to manipulate information with fewer resources than are required by analogous classical protocols.  Quantum optics deals with states of light and matter that are inherently quantum mechanical, often making use of correlation functions to characterize these features.  Recent and ongoing theoretical and computational investigations include entanglement and correlations in two-mode cavity QED, the performance of a quantum teleportation protocol based on superradiance and subradiance in the emission from a pair of atoms, the performance of quantum error correcting codes and decoherence free subspaces in the presence of partially correlated noise, and the spatially directed spontaneous emission from a collection of atoms.


Last 3 Publications:
"Intensity auto- and cross-correlations for a three-level Lambda type atom in a driven, damped two-mode cavity", Patrick Hemphill and James P. Clemens, to be published in JOSA B (2012).

 

"Probe spectrum of multilevel atoms in a damped, weakly driven two-mode cavity", James P. Clemens, Phys. Rev. A 81, 063818 (2010).

 

"Fidelity of quantum teleportation based on spatially and temporally resolved spontaneous emission", Richard Wagner Jr. and James P. Clemens, JOSA B 27, A73 (2010).