836 citations
- Delft University of TechnologyNL6 papers
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4 papers · 1 filter
Reliably distinguishing states in qutrit channels using one-way LOCC
Christopher King, Daniel Matysiak
We present numerical evidence showing that any three-dimensional subspace of C^3 \otimes C^n has an orthonormal basis which can be reliably distinguished using one-way LOCC, where…
Multiplicativity of Accessible Fidelity and Quantumness for Sets of Quantum States
K. M. R. Audenaert, C. A. Fuchs, C. King +1
Two measures of sensitivity to eavesdropping for alphabets of quantum states were recently introduced by Fuchs and Sasaki in quant-ph/0302092. These are the accessible fidelity and…
Maximal p-norms of entanglement breaking channels
C. King
It shown that when one of the components of a product channel is entanglement breaking, the output state with maximal p-norm is always a product state. This result complements Shor…
Exponential algorithmic speedup by quantum walk
Andrew M. Childs, Richard Cleve, Enrico Deotto +3
We construct an oracular (i.e., black box) problem that can be solved exponentially faster on a quantum computer than on a classical computer. The quantum algorithm is based on a c…