Si-Hui Tan

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—An important practical open question has been to design explicit, structured optical receivers that achieve the Holevo limit in the contexts of optical communication and " quantum reading. " The Holevo limit is an achievable rate that is higher than the Shannon limit of any known optical receiver. We demonstrate how a sequential decoding approach can(More)
Encryption schemes often derive their power from the properties of the underlying algebra on the symbols used. Inspired by group theoretic tools, we use the centralizer of the group of unitary operations to present a private-key quantum homomorphic encryption scheme that hides arbitrary quantum computations. A particular instance of our encoding hides(More)
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