Zobrazeno 1 - 10
of 12
pro vyhledávání: '"Markku P. V. Stenberg"'
In characterization of quantum systems, adapting measurement settings based on data while it is collected can generally outperform in efficiency conventional measurements that are carried out independently of data. The existing methods for choosing m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b41c02de362178661d45d2c353882fe7
http://arxiv.org/abs/1608.05360
http://arxiv.org/abs/1608.05360
Adaptive data collection and analysis, where data are being fed back to update the measurement settings, can greatly increase speed, precision, and reliability of the characterization of quantum systems. However, decoherence tends to make adaptive ch
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2fedd7c9b0e1e44d9e13c21cafdad57e
We present methods for efficient characterization of an optical coherent state $|\alpha\rangle$. We choose measurement settings adaptively and stochastically, based on data while it is collected. Our algorithm divides the estimation into two distinct
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c4e02f4d13e2c2ab39af58d7b6a1217a
Publikováno v:
Scopus-Elsevier
Alastalo, A T, Stenberg, M P V & Salomaa, M M 2004, ' Response functions of an artificial Anderson atom in the atomic limit ', Journal of Low Temperature Physics, vol. 134, no. 3-4, pp. 897-924 . https://doi.org/10.1023/B:JOLT.0000013208.27930.57
Alastalo, A T, Stenberg, M P V & Salomaa, M M 2004, ' Response functions of an artificial Anderson atom in the atomic limit ', Journal of Low Temperature Physics, vol. 134, no. 3-4, pp. 897-924 . https://doi.org/10.1023/B:JOLT.0000013208.27930.57
We consider the spin and pseudospin (charge) response functions of the exactly soluble Anderson atom model. We demonstrate, in particular, that a deviation from the magnetic Curie-law behaviour, appropriate for a free spin one-half, increases with in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d0308e80ac93cb65b8330f3316fcd694
https://doi.org/10.1023/b:jolt.0000013208.27930.57
https://doi.org/10.1023/b:jolt.0000013208.27930.57
Publikováno v:
Physical review letters. 113(21)
We present an efficient method for the characterization of two coupled discrete quantum systems, one of which can be controlled and measured. For two systems with transition frequencies $\omega_q$, $\omega_r$, and coupling strength $g$ we show how to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::88ee419cf8b8a6025e4047095b9c8b01
https://pubmed.ncbi.nlm.nih.gov/25479480
https://pubmed.ncbi.nlm.nih.gov/25479480
Publikováno v:
Physical Review B. 85
The optical spectra in the family of multiferroic manganites RMnO3 is a great puzzle. Current models cannot explain the fact that two strong electromagnons are present in the noncollinear spin cycloidal phase, with only one electromagnon surviving th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4d6730e0aa767f9e000f37d9d7f9c9d1
https://doi.org/10.1103/physrevb.85.104412
https://doi.org/10.1103/physrevb.85.104412
Autor:
Tine Greibe, Christopher Wilson, Markku P. V. Stenberg, Vitaly Shumeiko, Thilo Bauch, Per Delsing
Publikováno v:
Physical Review Letters. 106
In highly resistive superconducting tunnel junctions, excess subgap current is usually observed and is often attributed to microscopic "pinholes" in the tunnel barrier. We have studied the subgap current in superconductor-insulator-superconductor (SI
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d430bfbbf871b4befb15fdb805d3ecb3
https://doi.org/10.1103/physrevlett.106.097001
https://doi.org/10.1103/physrevlett.106.097001
Model for twin electromagnons and magnetically induced oscillatory polarization in multiferroicRMnO3
Publikováno v:
Physical Review B. 80
We propose a model for the pair of electromagnon excitations observed in the class of multiferroic materials $R{\text{MnO}}_{3}$ ($R$ is a rare-earth ion). The model is based on a harmonic cycloid ground state interacting with a zone-edge magnon and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::01aebc1e4aa92c96fad711798aae45f8
https://doi.org/10.1103/physrevb.80.094419
https://doi.org/10.1103/physrevb.80.094419
We study nonequilibrium noise correlations in diffusive normal-superconducting structures in the presence of a supercurrent. We present a parametrization for the quasiclassical Green's function in the first order of the counting field $\chi$. This we
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b20dee212dcf9eaf9fe27eee7b9e9630
http://arxiv.org/abs/cond-mat/0702430
http://arxiv.org/abs/cond-mat/0702430
Autor:
Jani Särkkä, Markku P. V. Stenberg
We study conductance cumulants $<< g^n >>$ and current cumulants $C_j$ related to heat and electrical transport in coherent mesoscopic quantum wires near the diffusive regime. We consider the asymptotic behavior in the limit where the number of chann
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::12e930e4951ecafae2f92b9479d77433
http://arxiv.org/abs/cond-mat/0607240
http://arxiv.org/abs/cond-mat/0607240