660 citations · 4.2k across the 53 of their papers we have counts for
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quant-ph1998★ 200 cited
On Quantum Fidelities and Channel Capacities
H. Barnum, E. Knill, M. A. Nielsen
We show the equivalence of two different notions of quantum channel capacity: that which uses the entanglement fidelity as its criterion of success in transmission, and that which…
quant-ph1998★ 1 cited
Quantum Rate-Distortion Coding
Howard Barnum
I introduce rate-distortion theory for quantum coding, and derive a lower bound, involving the coherent information, on the rate at which qubits must be used to encode a quantum so…