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| Author |
Hadfield, Robert H. |
| Title |
Single-photon detectors for optical quantum information applications |
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Journal Article |
| Year |
2009 |
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Nature Photonics |
Abbreviated Journal  |
Nature Photonics |
| Volume |
3 |
Issue |
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Pages |
696-705 |
| Keywords |
SPD |
| Abstract |
The past decade has seen a dramatic increase in interest in new single-photon detector technologies. A major cause of this trend has undoubtedly been the push towards optical quantum information applications such as quantum key distribution. These new applications place extreme demands on detector performance that go beyond the capabilities of established single-photon detectors. There has been considerable effort to improve conventional photon-counting detectors and to transform new device concepts into workable technologies for optical quantum information applications. This Review aims to highlight the significant recent progress made in improving single-photon detector technologies, and the impact that these developments will have on quantum optics and quantum information science. |
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RPLAB @ gujma @ |
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| Author |
Zurek, Wojciech Hubert |
| Title |
Quantum Darwinism |
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Journal Article |
| Year |
2009 |
Publication |
Nature Physics |
Abbreviated Journal |
Nat. Phys. |
| Volume |
5 |
Issue |
3 |
Pages |
181-188 |
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fromIPMRAS |
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Quantum Darwinism describes the proliferation, in the environment, of multiple records of selected states of a quantum system. It explains how the quantum fragility of a state of a single quantum system can lead to the classical robustness of states in their correlated multitude; shows how effective `wave-packet collapse' arises as a result of the proliferation throughout the environment of imprints of the state of the system; and provides a framework for the derivation of Born's rule, which relates the probabilities of detecting states to their amplitudes. Taken together, these three advances mark considerable progress towards settling the quantum measurement problem. |
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RPLAB @ gujma @ |
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799 |
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| Author |
Shor, Peter W. |
| Title |
Quantum information theory: The bits don't add up |
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Journal Article |
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2009 |
Publication |
Nature Physics |
Abbreviated Journal |
Nat. Phys. |
| Volume |
5 |
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Pages |
247 - 248 |
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fromIPMRAS |
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A counterexample to the 'additivity question', the most celebrated open problem in the mathematical theory of quantum information, casts doubt on the possibility of finding a simple expression for the information capacity of a quantum channel. |
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RPLAB @ gujma @ |
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800 |
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Trabesinger, Andreas |
| Title |
Quantum mechanics: Shaken foundations |
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Journal Article |
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2009 |
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Nature Physics |
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Nat. Phys. |
| Volume |
5 |
Issue |
12 |
Pages |
863 |
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802 |
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Marksteiner, M.; Divochiy, A.; Sclafani, M.; Haslinger, P.; Ulbricht, H.; Korneev, A.; Semenov, A.; Gol'tsman, G.; Arndt, M. |
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A superconducting NbN detector for neutral nanoparticles |
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Journal Article |
| Year |
2009 |
Publication |
Nanotechnol. |
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Nanotechnol. |
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20 |
Issue |
45 |
Pages |
455501 |
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SSPD; SNSPD; *Electric Conductivity; Microscopy, Electron, Scanning; Nanoparticles/*chemistry/ultrastructure; Nanotechnology/*methods; *Photons |
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We present a proof-of-principle study of superconducting single photon detectors (SSPD) for the detection of individual neutral molecules/nanoparticles at low energies. The new detector is applied to characterize a laser desorption source for biomolecules and allows retrieval of the arrival time distribution of a pulsed molecular beam containing the amino acid tryptophan, the polypeptide gramicidin as well as insulin, myoglobin and hemoglobin. We discuss the experimental evidence that the detector is actually sensitive to isolated neutral particles. |
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University of Vienna, Boltzmanngasse 5, A-1090 Vienna, Austria. markus.arndt@univie.ac.at |
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English |
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0957-4484 |
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PMID:19822928 |
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1239 |
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