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Author |
Brida, G.; Genovese, M.; Ruo Berchera, I. |
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Title |
Experimental realization of sub-shot-noise quantum imaging |
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Journal Article |
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2010 |
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Nature Photonics |
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Nat. Photon. |
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4 |
Issue |
4 |
Pages |
227-230 |
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Abstract |
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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RPLAB @ gujma @ |
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771 |
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Author |
Kok, Pieter |
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Title |
Quantum optics: Entangled photons report for duty |
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Journal Article |
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2010 |
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Nature Photonics |
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Nat. Photon. |
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Volume |
4 |
Issue |
8 |
Pages |
504-505 |
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fromIPMRAS |
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Entangled photons are a key ingredient in optical quantum technologies, but researchers have so far been unable to produce a single pair of entangled photons. Now, two groups from China and Austria independently report just that, with a technique that avoids the need to infer entanglement from detection signatures. |
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772 |
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Author |
Kono, Junichiro |
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Title |
Coherent terahertz control |
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Journal Article |
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2011 |
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Nature Photonics |
Abbreviated Journal |
Nat. Photon. |
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5 |
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5-6 |
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fromIPMRAS |
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Spin and charge terahertz excitations in solids are promising for implementing future technologies such as spintronics and quantum computation, but coherently controlling them has been a significant challenge. Researchers have now manipulated coherent spin waves in an antiferromagnet using the intense magnetic field of ultrashort terahertz pulses. |
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773 |
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Paiella, Roberto |
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Title |
Terahertz quantum cascade lasers: Going ultrafast |
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2011 |
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Nature Photonics |
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Nat. Photon. |
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5 |
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253–255 |
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A new asynchronous coherent optical sampling method allows for the direct visualization of actively mode-locked quantum cascade laser pulses at terahertz wavelengths. |
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RPLAB @ gujma @ |
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774 |
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Author |
Wu, Ming C. |
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Title |
Optoelectronic tweezers |
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Journal Article |
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Year |
2011 |
Publication |
Nature Photonics |
Abbreviated Journal |
Nature Photon |
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Volume |
5 |
Issue |
6 |
Pages |
322-324 |
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fromIPMRAS |
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Using projected light patterns to form virtual electrodes on a photosensitive substrate, optoelectronic tweezers are able to grab and move micro- and nanoscale objects at will, facilitating applications far beyond biology and colloidal science. |
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RPLAB @ gujma @ |
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775 |
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