CNOT and Bell-state analysis in the weak-coupling cavity QED regime
Cristian Bonato, Florian Haupt, Sumant S. R. Oemrawsingh, Jan Gudat, Dapeng Ding, Martin P. Van Exter, Dirk Bouwmeester · Physical Review Letters · 2010
We propose an interface between the spin of a photon and the spin of an electron confined in a quantum dot embedded in a microcavity operating in the weak-coupling regime. This interface, based on spin selective photon reflection from the cavity, can be used to construct a CNOT gate, a multiphoton entangler and a photonic Bell-state analyzer. Finally, we analyze experimental feasibility, concluding that the schemes can be implemented with current technology.