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Showing 1997 · quant-phShow all
2 papers · 2 filters
quant-ph1997★ 32 cited
The quantum capacity is properly defined without encodings
H. Barnum, J. A. Smolin, B. M. Terhal
We show that no source encoding is needed in the definition of the capacity of a quantum channel for carrying quantum information. This allows us to use the coherent information ma…
quant-ph1997★ 56 cited
Single quantum querying of a database
B. M. Terhal, J. A. Smolin
We present a class of fast quantum algorithms, based on Bernstein and Vazirani's parity problem, that retrieve the entire contents of a quantum database in a single query. The…