Zobrazeno 1 - 10
of 17
pro vyhledávání: '"Johannes Hackmann"'
Publikováno v:
physica status solidi (b). 251:1270-1275
Spin noise spectroscopy is a promising technique for revealing the microscopic nature of spin dephasing processes in quantum dots (QDs). We compare the spin-noise in an ensemble of singly charged QDs calculated by two complementary approaches. The Ch
Autor:
Johannes Hackmann, Alex Greilich, Dmitry Smirnov, Manfred Bayer, Ph. Glasenapp, Frithjof B. Anders, Mikhail M. Glazov
Publikováno v:
Physical Review B. 93
The spin fluctuations of electron and hole doped self-assembled quantum dot ensembles are measured optically in the low-intensity limit of a probe laser in absence and presence of longitudinal or transverse static magnetic fields. The experimental re
Autor:
Johannes Hackmann, Ning Wu, Xi Xing, Herschel Rabitz, Arun Nanduri, Frithjof B. Anders, Nina Fröhling
Decoherence of a central spin coupled to an interacting spin bath via inhomogeneous Heisenberg coupling is studied by two different approaches, namely an exact equations of motion (EOMs) method and a Chebyshev expansion technique (CET). By assuming a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::49abe7898cf4a1bbdfb77377eaefae46
http://arxiv.org/abs/1507.04514
http://arxiv.org/abs/1507.04514
Mazur's inequality renders statements about persistent correlations possible. We generalize it in a convenient form applicable to any set of linearly independent constants of motion. This approach is used to show rigorously that a fraction of the ini
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5c729c28699ca97aeaca62139e9a7cc2
Autor:
Johannes Hackmann, Frithjof B. Anders
Spin-noise measurements can serve as direct probe for the microscopic decoherence mechanism of an electronic spin in semiconductor quantum dots (QD).We have calculated the spin-noise spectrum in the anisotropic central spin model using a Chebyshev ex
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5753b5f0481b5aa1bafbb3bde6167ab8
http://arxiv.org/abs/1311.2030
http://arxiv.org/abs/1311.2030
Autor:
Johannes Hackmann
Publikováno v:
Intereconomics. 29:292-302
The general public views international trade in waste materials overwhelmingly with disfavour. Is this negative attitude justified? Professor Hackmann offers an allocative and an ethical assessment of this question.