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Hiding Quantum Data
David P. DiVincenzo, Patrick Hayden, Barbara M. Terhal
Recent work has shown how to use the laws of quantum mechanics to keep classical and quantum bits secret in a number of different circumstances. Among the examples are private quan…
Adaptive Quantum Computation, Constant Depth Quantum Circuits and Arthur-Merlin Games
Barbara M. Terhal, David P. DiVincenzo
We present evidence that there exist quantum computations that can be carried out in constant depth, using 2-qubit gates, that cannot be simulated classically with high accuracy. W…
The entanglement of purification
Barbara M. Terhal, Michal Horodecki, Debbie W. Leung +1
We introduce a measure of both quantum as well as classical correlations in a quantum state, the entanglement of purification. We show that the (regularized) entanglement of purifi…