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Sequential strong measurements and the heat vision effect



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Navascués Cobo, Miguel y Pérez García, David (2011) Sequential strong measurements and the heat vision effect. New Journal of Physics, 13 . ISSN 1367-2630, ESSN: 1367-2630

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URL Oficial: http://iopscience.iop.org/1367-2630/13/11/113038


We study scenarios where a finite set of non-demolition von-Neumann measurements are available. We note that, in some situations, repeated application of such measurements allows estimating an infinite number of parameters of the initial quantum state, and illustrate the point with a physical example. We then move on to study how the system under observation is perturbed after several rounds of projective measurements. While in the finite dimensional case the effect of this perturbation always saturates, there are some instances of infinite dimensional systems where such a perturbation is accumulative, and the act of retrieving information about the system increases its energy indefinitely (i.e., we have `Heat Vision'). We analyze this effect and discuss a specific physical system with two dichotomic von-Neumann measurements where Heat Vision is expected to show.

Tipo de documento:Artículo
Palabras clave:Teoría cuántica, Quantum Physics
Materias:Ciencias > Física > Teoría de los quanta
Código ID:12152
Depositado:02 Feb 2011 16:30
Última Modificación:04 Dic 2014 09:54

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