Qubit versus bit for measuring an integral of a classical field

Abstract

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.

Significantly revised, to be published in PRL

References in corpus (2)

• Optimal encoding and decoding of a spin direction
• Substituting a qubit for an arbitrarily large number of classical bits

Cited by in corpus (7)

• Quantum measurement of a mesoscopic spin ensemble
• Quantum Theory and Determinism
• Quantum metrology with a transmon qutrit
• Quantum advantages in classically defined tasks
• Optimal amount of entanglement to distinguish quantum states instantaneously
• Linear Ascending Metrological Algorithm
• Measurement of an integral of a classical field with a single quantum particle