Qubits versus bits for measuring an integral of a classical field.
نویسندگان
چکیده
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.
منابع مشابه
ar X iv : q ua nt - p h / 02 12 16 5 v 2 1 6 M ay 2 00 4 Qubit versus bit for measuring an integral of a classical field
Although the retrievable information content of a number of qubits is essentially equal to the information content which can be stored in the same number of bits [1], qubits are more efficient for many specifically tailored tasks. Recently, Galvão and Hardy [2] (GH) found one such task: pinpointing a particular property of an integral of a classical field is possible using a single qubit, but i...
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عنوان ژورنال:
- Physical review letters
دوره 92 21 شماره
صفحات -
تاریخ انتشار 2004