Informationally symmetrical Bell state preparation and measurement

Yong Su Kim, Tanumoy Pramanik, Young Wook Cho, Ming Yang, Sang Wook Han, Sang Yun Lee, Min Sung Kang, Sung Moon

Research output: Contribution to journalArticlepeer-review

22 Citations (Scopus)


Bell state measurement (BSM) plays crucial roles in photonic quantum information processing. The standard linear optical BSM is based on Hong-Ou-Mandel interference where two photons meet and interfere at a beamsplitter (BS). However, a generalized two-photon interference is not based on photon-photon interaction, but interference between two-photon probability amplitudes. Therefore, it might be possible to implement BSM without interfering photons at a BS. Here, we investigate a linear optical BSM scheme which does not require two photon overlapping at a BS. By unleashing the two photon coexistence condition, it can be symmetrically divided into two parties. The symmetrically dividable property suggests an informational symmetrical BSM between remote parties without a third party. We also present that our BSM scheme can be used for Bell state preparation between remote parties without a third party. Since our BSM scheme can be easily extended to multiple photons, it can be useful for various quantum communication applications.

Original languageEnglish
Pages (from-to)29539-29549
Number of pages11
JournalOptics Express
Issue number22
Publication statusPublished - 2018

Bibliographical note

Publisher Copyright:
© 2018 Optical Society of America under the terms of the OSA Open Access Publishing Agreement.

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics


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