Mesoscopic Quadratic Quantum Measurements
- 29 July 2004
- journal article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 93 (5) , 056803
- https://doi.org/10.1103/physrevlett.93.056803
Abstract
We develop a theory of quadratic quantum measurements by a mesoscopic detector. It is shown that the quadratic measurements should have nontrivial quantum information properties, providing, for instance, a simple way of entangling two noninteracting qubits. We also calculate the output spectrum of a detector with both linear and quadratic response, continuously monitoring two qubits.Keywords
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