Zobrazeno 1 - 9
of 9
pro vyhledávání: '"Arun Nanduri"'
Publikováno v:
Physical Review A. 93
The dynamics of closed quantum systems may be manipulated by using an applied field to achieve a control objective value for a physical goal. The functional relationship between the applied field and the objective value forms a quantum control landsc
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
The dynamics of quantum phase transitions are inevitably accompanied by the formation of defects when crossing a quantum critical point. For a generic class of quantum critical systems, we solve the problem of minimizing the production of defects thr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::24e2a10f35f02334fcd2647627124e11
http://arxiv.org/abs/1409.1622
http://arxiv.org/abs/1409.1622
The control of quantum system dynamics is generally performed by seeking a suitable applied field. The physical objective as a functional of the field forms the quantum control landscape, whose topology, under certain conditions, has been shown to co
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f27b136c45157345e81e54e185593a72
http://arxiv.org/abs/1408.6505
http://arxiv.org/abs/1408.6505
Publikováno v:
Physical Review B. 90
Motivated by the findings of logarithmic spreading of entanglement in a many-body localized system, we more closely examine the spreading of entanglement in the fully many-body localized phase, where all many-body eigenstates are localized. Performin
Publikováno v:
Physical Review A. 90
Publikováno v:
Physical Review A. 89
We examine the influence of environmental interactions on simple quantum systems by obtaining the exact reduced dynamics of a qubit coupled to a one-dimensional spin bath. In contrast to previous studies, both the qubit-bath coupling and the nearest-
Publikováno v:
Physical Review A. 88
A common goal of quantum control is to maximize a physical observable through the application of a tailored field. The observable value as a function of the field constitutes a quantum control landscape. Previous works have shown, under specified con
Publikováno v:
Physical Review B. 88
The quantum $O(N)$ model in the infinite-$N$ limit is a paradigm for symmetry breaking. Qualitatively, its phase diagram is an excellent guide to the equilibrium physics for more realistic values of $N$ in varying spatial dimensions ($dg1$). Here, we