Test of weak measurement on a two- or three-qubit computer

Details Test of weak measurement on a two- or three-qubit computer Test of weak measurement on a two- or three-qubit computer

2007-11-26

arxiv.org/abs/0711.4149v2

Phys. Rev. A 77, 032101 (2008)

Physics

Quantum Physics

To appear in Physical Review A. Title changed. 6 pages in RevTeX format

Scientific paper

10.1103/PhysRevA.77.032101

Current quantum computer technology is sufficient to realize weak measurements and the corresponding concept of weak values. We demonstrate how the weak value anomaly can be tested, along with consistency and simultaneity of weak values, using only discrete degrees of freedom. All you need is a quantum computer with two--or better, three--qubits. We also give an interpretation of the weak value as an effective field strength in a postselected spin measurement.

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