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An Isaac Newton Institute Workshop

Quantum Information Theory: Present Status and Future Directions

Quantum versus classical, qubits versus bits

23rd August 2004

Author: L. Vaidman (Tel-Aviv)


Methods for measuring an integral of a classical field via local interaction of classical bits or local interaction of qubits passing through the field one at a time are analyzed. A quantum method, which has an exponentially better precision than any classical method we could see, is described. An alternative quantum method using only one particle is proposed.