Journal
OPTICS EXPRESS
Volume 26, Issue 22, Pages 29539-29549Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.26.029539
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Funding
- ICT R&D program of MSIP/IITP [B0101-16-1355]
- KIST research program [2E27801]
- National Natural Science Foundation of China (NSFC) [11274010]
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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. (C) 2018 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
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