Efficient photon number detection with silicon avalanche photodiodes
O. Thomas, Zhiliang L. Yuan, J. F. Dynes, A. W. Sharpe, Andrew J. Shields · 2011
Photon number detection (PND) is an essential requirement for quantum information processing based on photonic qubits, for example in Bell state measurements used in quantum teleportation1 or heralding the successful operation of a quantum logic gate2, in which number states due to 0,1 or 2 photons must be distinguished.