TY  - JOUR
AU  - Brida, G.
AU  - Genovese, M.
AU  - Ruo Berchera, I.
PY  - 2010
DA  - 2010//
TI  - Experimental realization of sub-shot-noise quantum imaging
T2  - Nat. Photon.
JO  - Nature Photonics
SP  - 227
EP  - 230
VL  - 4
IS  - 4
KW  - fromIPMRAS
AB  - The properties of quantum states have led to the development of new technologies, ranging from quantum information to quantum metrology. A recent field of research to emerge is quantum imaging, which aims to overcome the limits of classical imaging by making use of the spatial properties of quantum states of light . In particular, quantum correlations between twin beams represent a fundamental resource for these studies. One of the most interesting proposed schemes takes advantage of the spatial quantum correlations between parametric down-conversion light beams to realize sub-shot-noise imaging of weak absorbing objects, leading ideally to noise-free imaging. Here, we present the first experimental realization of this scheme, showing its potential to achieve a larger signal-to-noise ratio than classical imaging methods. This work represents the starting point for this quantum technology, which we anticipate will have applications when there is a requirement for low-photon-flux illumination (for example for use with biological samples).
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ID  - Brida_etal2010
ER  -