Dataset Information

Four-dimensional entanglement distribution over 100?km.

ABSTRACT: High-dimensional quantum entanglement can enrich the functionality of quantum information processing. For example, it can enhance the channel capacity for linear optic superdense coding and decrease the error rate threshold of quantum key distribution. Long-distance distribution of a high-dimensional entanglement is essential for such advanced quantum communications over a communications network. Here, we show a long-distance distribution of a four-dimensional entanglement. We employ time-bin entanglement, which is suitable for a fibre transmission, and implement scalable measurements for the high-dimensional entanglement using cascaded Mach-Zehnder interferometers. We observe that a pair of time-bin entangled photons has more than 1?bit of secure information capacity over 100?km. Our work constitutes an important step towards secure and dense quantum communications in a large Hilbert space.

SUBMITTER: Ikuta T

PROVIDER: S-EPMC5770424 | biostudies-literature | 2018 Jan

REPOSITORIES: biostudies-literature

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Four-dimensional entanglement distribution over 100 km.

Ikuta Takuya T Takesue Hiroki H

Scientific reports 20180116 1

High-dimensional quantum entanglement can enrich the functionality of quantum information processing. For example, it can enhance the channel capacity for linear optic superdense coding and decrease the error rate threshold of quantum key distribution. Long-distance distribution of a high-dimensional entanglement is essential for such advanced quantum communications over a communications network. Here, we show a long-distance distribution of a four-dimensional entanglement. We employ time-bin en ...[more]

PMID: 29339764

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Dataset Information

Four-dimensional entanglement distribution over 100?km.

Publications

Four-dimensional entanglement distribution over 100 km.

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