The distribution of entangled states between distant parties in an optical network is crucial for the successful implementation of various quantum communication protocols such as quantum cryptography, teleportation and dense coding [1, 2, 3] . However, owing to the unavoidable loss in any real optical channel, the distribution of loss-intolerant entangled states is inevitably inflicted by decoherence, which causes a degradation of the transmitted entanglement. To combat the decoherence, entanglement distillation, which is the process of extracting a small set of highly entangled states from a large set of less entangled states, can be used [4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14] . Here we report on the mesoscopic distillation of deterministically prepared entangled light pulses that have undergone non-Gaussian noise. The entangled light pulses [15, 16, 17] Entanglement distillation has been experimentally demonstrated for spin 1/2 (or qubit)
Dong et al. REF describe a mesoscopic distillation of deterministically prepared entangled light pulses that have undergone nonGaussian noise.
Experimental entanglement distillation of mesoscopic quantum states
Nature Physics
Physics