Are optical quantum information processing experiments possible without beamsplitter?
arXiv:1911.02874
Abstract
The significance of beamsplitter in experimental optical quantum information processing and quantum technology is discussed with a focus on the role of a beamsplitter-type Hamiltonian in the recent development in this field of research. Here, we follow a new approach to briefly describe quantum measurement, Bell measurement, quantum state engineering, quantum teleportation, cryptography, and computation using both discrete and continuous variables to establish the wide applications of beamsplitter-type operation. Finally, we also discuss the limitations of this linear optical element.
arXiv commentThis article, to be published in a special issue of Asian Journal of Physics, is dedicated to Professor Ajoy Ghatak on his 80th birthday focused on the significance of beamsplitter-type Hamiltonian and corresponding optical element in discrete and continuous variable quantum communication and computation
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