Complete hyperentangled-Bell-state analysis for quantum communication
By Yu‐Bo Sheng, Fuguo Deng, G. Long. 2010
325 citations recorded by the source corpus.
It is impossible to unambiguously distinguish the four Bell states in polarization, resorting to linear optical elements only. Recently, the hyperentangled Bell state, the simultaneous entanglement in more than one degree of freedom, has been used to assist in the complete Bell-state analysis of the four Bell states. However, if the additional degree of freedom is qubitlike, one can only distinguish 7 from the group of 16 states. Here we present a way to distinguish the hyperentangled Bell states completely with the help of cross-Kerr nonlinearity. Also, we discuss its application in the quantum teleportation of a particle in an unknown state in two different degrees of freedom and in the entanglement swapping of hyperentangled states. These applications will increase the channel capacity of long-distance quantum communication.
Subfields: Artificial Intelligence, Atomic and Molecular Physics, and Optics
View Paper: https://www.semanticscholar.org/paper/85660632b483388cbb2bfb5817d076e94968843f
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In Atomic and Molecular Physics, and Optics
Citations in the corpus
- Quantum Secure Direct Communication with Quantum Memory. (2016, background): “In recent years, the quantum teleportation of multiple degrees of freedom of a single photon has been achieved both in theory and experiments [12,33]; it requires the sophisticated quantum nondemolition measurement and complete hyperentanglement Bell-state measurement, which is not an easy task in t”
- One-step quantum secure direct communication. (2021, background): “Moreover, the hyperentanglement swapping based on complete hyperentangled BSA [16] and hyperentanglement purifica-Fig and Bob.”