Generalized multi-photon quantum interference

摘要: Non-classical interference of photons lies at the heart optical quantum information processing. This effect is exploited in universal gates as well purpose-built computers that solve BosonSampling problem. Although non-classical often associated with perfectly indistinguishable this only represents degenerate case, hard to achieve under realistic experimental conditions. Here we exploit tunable distinguishability reveal full spectrum multi-photon interference. investigate theory and experiment by controlling delay times three injected into an integrated interferometric network. We derive entire coincidence landscape identify transition matrix immanants ideally suited functions describe generalized case input arbitrary distinguishability. introduce a compact description utilizing natural basis which decouples state from network, thereby providing useful tool for even larger photon numbers.