Perfectly Secure Cloud Computing? Really?

ScienceDaily (Jan. 19, 2012) —  By combining the power of quantum computing with the security of quantum cryptography,  researchers have shown that perfectly secure cloud computing is possible. They have performed an experimental demonstration of quantum computation in which the input, the data processing, and the output remain unknown to the quantum computer.

The image shows clusters of entangled qubits,
which allow remote quantum computing to be
performed on a server, while keeping the contents
and results hidden from the remote server.
(Credit: Equinox Graphics)