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Karuseichyk, I.; Sorelli, G.; Walschaers, M.; Treps, N.; Gessner, M. |
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Title |
Resolving mutually-coherent point sources of light with arbitrary statistics |
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Journal Article |
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Year |
2022 |
Publication |
Physical Review Research |
Abbreviated Journal |
Phys. Rev. Res. |
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Volume |
4 |
Issue |
4 |
Pages |
043010 - 11pp |
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Abstract |
We analyze the problem of resolving two mutually coherent point sources with arbitrary quantum statistics, mutual phase, and relative and absolute intensity. We use a sensitivity measure based on the method of moments and compare direct imaging with spatial-mode demultiplexing (SPADE), analytically proving advantage of the latter. We show that the moment-based sensitivity of SPADE saturates the quantum Fisher information for all known cases, even for non-Gaussian states of the sources. |
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Address |
[Karuseichyk, Ilya; Sorelli, Giacomo; Walschaers, Mattia; Treps, Nicolas] Univ PSL, Sorbonne Univ, Coll France, Lab Kastler Brossel,ENS,CNRS, 4 Pl Jussieu, F-75252 Paris, France, Email: ilya.karuseichyk@lkb.upmc.fr |
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Amer Physical Soc |
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English |
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WOS:000876858200004 |
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no |
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yes |
International Collaboration |
yes |
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Call Number |
IFIC @ pastor @ |
Serial |
5400 |
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Author |
Lasa-Alonso, J.; Olmos-Trigo, J.; Devescovi, C.; Hernandez, P.; Garcia-Etxarri, A.; Molina-Terriza, G. |
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Title |
Resonant helicity mixing of electromagnetic waves propagating through matter |
Type |
Journal Article |
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Year |
2023 |
Publication |
Physical Review Research |
Abbreviated Journal |
Phys. Rev. Res. |
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Volume |
5 |
Issue |
2 |
Pages |
023116 - 8pp |
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Abstract |
Dual scatterers preserve the helicity of an incident field, whereas antidual scatterers flip it completely. In this setting of linear electromagnetic scattering theory, we provide a completely general proof on the nonexistence of passive antidual scatterers. However, we show that scatterers fulfilling the refractive index matching condition flip the helicity of the fields very efficiently without being in contradiction with the law of energy conservation. Moreover, we find that this condition is paired with the impedance matching condition in several contexts of electromagnetism and, in particular, within Fresnel's and Mie's scattering problems. Finally, we show that indexmatched media induce a resonant helicity mixing on the propagating electromagnetic waves. We reach this conclusion by identifying that the refractive index matching condition leads to the phenomenon of avoided crossing. |
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Address |
[Lasa-Alonso, Jon; Molina-Terriza, Gabriel] Ctr Fis Mat, Paseo Manuel Lardizabal 5, Donostia San Sebastian 20018, Spain, Email: jonqnanolab@gmail.com; |
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Amer Physical Soc |
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English |
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WOS:000999546300002 |
Approved |
no |
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Is ISI |
yes |
International Collaboration |
no |
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Call Number |
IFIC @ pastor @ |
Serial |
5856 |
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Author |
Das, B. et al; Algora, A. |
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Title |
Broken seniority symmetry in the semimagic proton mid-shell nucleus 95Rh |
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Journal Article |
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Year |
2024 |
Publication |
Physical Review Research |
Abbreviated Journal |
Phys. Rev. Res. |
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Volume |
6 |
Issue |
2 |
Pages |
L022038 - 7pp |
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Abstract |
Lifetime measurements of low-lying excited states in the semimagic ( N = 50) nucleus 95 Rh have been performed by means of the fast -timing technique. The experiment was carried out using gamma -ray detector arrays consisting of LaBr 3 (Ce) scintillators and germanium detectors integrated into the DESPEC experimental setup commissioned for the Facility for Antiproton and Ion Research ( FAIR ) Phase -0, Darmstadt, Germany. The excited states in 95 Rh were populated primarily via the /3 decays of 95 Pd nuclei, produced in the projectile fragmentation of a 850 MeV / nucleon 124 Xe beam impinging on a 4 g / cm 2 9 Be target. The deduced electromagnetic E2 transition strengths for the gamma -ray cascade within the multiplet structure depopulating from the isomeric I pi = 21 / 2 + state are found to exhibit strong deviations from predictions of standard shell model calculations which feature approximately conserved seniority symmetry. In particular, the observation of a strongly suppressed E2 strength for the 13 / 2 + -> 9 / 2 + ground state transition cannot be explained by calculations employing standard interactions. This remarkable result may require revision of the nucleon-nucleon interactions employed in state-of-the-art theoretical model calculations, and might also point to the need for including three-body forces in the Hamiltonian. |
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[Das, B.; Cederwall, B.; Qi, C.; Aktas, O.; Liotta, R.; Vasiljevic, J.] KTH Royal Inst Technol, S-10691 Stockholm, Sweden, Email: b.das@gsi.de; |
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Publisher |
Amer Physical Soc |
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English |
Summary Language |
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Original Title |
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Series Editor |
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Series Title |
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Abbreviated Series Title |
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Series Volume |
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Notes |
WOS:001240855200002 |
Approved |
no |
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Is ISI |
yes |
International Collaboration |
yes |
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Call Number |
IFIC @ pastor @ |
Serial |
6147 |
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