Remote state preparation: arbitrary remote control of photon polarizations for quantum communication
Nicholas A. Peters, Julio T. Barreiro, M. E. Goggin, Tzu-Chieh Wei, Paul G. Kwiat · Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE · 2005
By using a partial polarizer to apply a generalized polarization measurement to one photon of a polarization entangled pair, we remotely prepare single photons in arbitrary polarization qubits. Specifically, we are able to produce a range of states of any desired degree of mixedness or purity, over (and within) the entire Poincare sphere, with a typical fidelity exceeding 99.5%. Moreover, by using non-degenerate entangled pairs as a resource, we can prepare states in multiple wavelengths. Finally, we discuss the states remotely preparable given a particular two-qubit resource state.