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Berlín, Guido; Brassard, Gilles; Bussières, Félix; Godbout, Nicolas; Slater, Joshua A.; Tittel, Wolfgang |
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Title |
Experimental loss-tolerant quantum coin flipping |
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Journal Article |
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2011 |
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Nature Communications |
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Nat. Comm. |
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2 |
Issue |
561 |
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7 |
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fromIPMRAS |
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Coin flipping is a cryptographic primitive in which two distrustful parties wish to generate a random bit to choose between two alternatives. This task is impossible to realize when it relies solely on the asynchronous exchange of classical bits: one dishonest player has complete control over the final outcome. It is only when coin flipping is supplemented with quantum communication that this problem can be alleviated, although partial bias remains. Unfortunately, practical systems are subject to loss of quantum data, which allows a cheater to force a bias that is complete or arbitrarily close to complete in all previous protocols and implementations. Here we report on the first experimental demonstration of a quantum coin-flipping protocol for which loss cannot be exploited to cheat better. By eliminating the problem of loss, which is unavoidable in any realistic setting, quantum coin flipping takes a significant step towards real-world applications of quantum communication. |
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766 |
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Kono, Junichiro |
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Title |
Coherent terahertz control |
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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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5-6 |
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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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774 |
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Wu, Ming C. |
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Title |
Optoelectronic tweezers |
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2011 |
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Nature Photonics |
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Nature Photon |
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5 |
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6 |
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322-324 |
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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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no |
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RPLAB @ gujma @ |
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775 |
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Author |
Fazal, Furqan M.; Block, Steven M. |
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Title |
Optical tweezers study life under tension |
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Journal Article |
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2011 |
Publication |
Nature Photonics |
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Nat. Photon. |
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5 |
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6 |
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318-321 |
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Optical tweezers have become one of the primary weapons in the arsenal of biophysicists, and have revolutionized the new field of single-molecule biophysics. Today's techniques allow high-resolution experiments on biological macromolecules that were mere pipe dreams only a decade ago. |
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RPLAB @ gujma @ |
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776 |
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