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| Author | Казаков, А. Ю.; Кардакова, А. И.; Селиверстов, С. В.; Горшков, К. Н.; Дивочий, А. В.; Финкель, М. И.; Корнеев, А. А.; Вахтомин, Ю. Б. | ||||
| Title | Возможность применения сверхпроводниковых материалов в качестве отражающего покрытия холодного зеркала телескопа субмиллиметрового диапазона | Type | Journal Article | ||
| Year | 2012 | Publication | Совр. проб. науки и обр. | Abbreviated Journal | Совр. проб. науки и обр. |
| Volume | Issue | 3 | Pages | 1-5 | |
| Keywords | radio telescope, superconducting coating | ||||
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| Language | russian | Summary Language | Original Title | ||
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| Series Volume | Series Issue | Edition | |||
| ISSN | 2070-7428 | ISBN | Medium | ||
| Area | Expedition | Conference | |||
| Notes | УДК 520.272.2 | Approved | no | ||
| Call Number | RPLAB @ sasha @ казаковвозможность | Serial | 1030 | ||
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| Author | Bason, Mark G.; Viteau, Matthieu; Malossi, Nicola; Huillery, Paul; Arimondo, Ennio; Ciampini, Donatella; Fazio, Rosario; Giovannetti, Vittorio; Mannella, Riccardo; Morsch, Oliver | ||||
| Title | High-fidelity quantum driving | Type | Journal Article | ||
| Year | 2012 | Publication | Nature Physics | Abbreviated Journal | Nat. Phys. |
| Volume | 8 | Issue | 2 | Pages | 147-152 |
| Keywords | fromIPMRAS | ||||
| Abstract |
Accurately controlling a quantum system is a fundamental requirement in quantum information processing and the coherent manipulation of molecular systems. The ultimate goal in quantum control is to prepare a desired state with the highest fidelity allowed by the available resources and the experimental constraints. Here we experimentally implement two optimal high-fidelity control protocols using a two-level quantum system comprising Bose-Einstein condensates in optical lattices. The first is a short-cut protocol that reaches the maximum quantum-transformation speed compatible with the Heisenberg uncertainty principle. In the opposite limit, we realize the recently proposed transitionless superadiabatic protocols in which the system follows the instantaneous adiabatic ground state nearly perfectly. We demonstrate that superadiabatic protocols are extremely robust against control parameter variations, making them useful for practical applications. | ||||
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| Notes | Approved | no | |||
| Call Number | RPLAB @ gujma @ | Serial | 816 | ||
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| Author | Inderbitzin, K.; Engel, A.; Schilling, A.; Il'in, K.; Siegel, M. | ||||
| Title | An ultra-fast superconducting Nb nanowire single-photon detector for soft x-rays | Type | Journal Article | ||
| Year | 2012 | Publication | Abbreviated Journal | Appl. Phys. Lett. | |
| Volume | 101 | Issue | Pages | ||
| Keywords | SSPD, SNSPD, x-ray, Nb | ||||
| Abstract |
Although superconducting nanowire single-photon detectors (SNSPDs) are well studied regarding the detection of infrared/optical photons and keV-molecules, no studies on continuous x-ray photon counting by thick-film detectors have been reported so far. We fabricated a 100 nm thick niobium x-ray SNSPD (an X-SNSPD) and studied its detection capability of photons with keV-energies in continuous mode. The detector is capable to detect photons even at reduced bias currents of 0.4%, which is in sharp contrast to optical thin-film SNSPDs. No dark counts were recorded in extended measurement periods. Strikingly, the signal amplitude distribution depends significantly on the photon energy spectrum.VC |
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| Notes | Approved | no | |||
| Call Number | RPLAB @ seleznev @ | Serial | 878 | ||
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| Author | Akalin, Tahsin | ||||
| Title | Terahertz sources: Powerful photomixers | Type | Journal Article | ||
| Year | 2012 | Publication | Nature Photonics | Abbreviated Journal | Nat. Photon. |
| Volume | 6 | Issue | 2 | Pages | 81 |
| Keywords | fromIPMRAS | ||||
| Abstract |
An efficient continuous-wave source of terahertz radiation that combines the outputs from two near-infrared semiconductor lasers in a novel photomixer looks set to benefit applications in spectroscopy and imaging. | ||||
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| Notes | Approved | no | |||
| Call Number | RPLAB @ gujma @ | Serial | 787 | ||
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| Author | Steudle, Gesine A.; Schietinger, Stefan; Höckel, David; Dorenbos, Sander N.; Zadeh, Iman E.; Zwiller, Valery; Benson, Oliver | ||||
| Title | Measuring the quantum nature of light with a single source and a single detector | Type | Journal Article | ||
| Year | 2012 | Publication | Phys. Rev. A | Abbreviated Journal | |
| Volume | 86 | Issue | 5 | Pages | 053814 |
| Keywords | SSPD, SNSPD, saturation count rates, dead time, dynamic range | ||||
| Abstract |
An elementary experiment in optics consists of a light source and a detector. Yet, if the source generates nonclassical correlations such an experiment is capable of unambiguously demonstrating the quantum nature of light. We realized such an experiment with a defect center in diamond and a superconducting detector. Previous experiments relied on more complex setups, such as the Hanbury Brown and Twiss configuration, where a beam splitter directs light to two photodetectors, creating the false impression that the beam splitter is a fundamentally required element. As an additional benefit, our results provide a simplification of the widely used photon-correlation techniques. | ||||
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| Publisher | American Physical Society | Place of Publication | Editor | ||
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| Notes | Approved | no | |||
| Call Number | Serial | 1089 | |||
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