Quantum measurement: reliable teleportation

This week, two papers were published in Nature that report experiments of so-called ‘deterministic’ quantum teleportation, i.e., teleportation using entangled states and classical communication which works with a much higher level of reliability than previous experiments. In other words, these new experiments are significantly more efficient in producing events of actual quantum teleportation. The first of these experiments, by Takeda et al., uses single-photon quantum bits in superposition states of different times of arrival. The second, by Steffen et al., works by means of a solid-state qubit. For a short write-up of the two experiments and their relevance, see the short article by Timothy Ralph.

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