Zobrazeno 1 - 8
of 8
pro vyhledávání: '"Veronica Secondi"'
Publikováno v:
Journal of Optics B: Quantum and Semiclassical Optics. 7:S664-S671
An extensive characterization of the information flux underlying the universal cloning process is presented together with the realization of several cloning and measurement tasks. The restoration of both the quantum and classical information associat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cb12a4b6a1ae5152c2ee3b7d87a095b7
https://doi.org/10.1088/1464-4266/7/12/032
https://doi.org/10.1088/1464-4266/7/12/032
Publikováno v:
Physical Review A. 74
We investigate the multiparticle quantum superposition and the persistence of multipartite entanglement of the quantum superposition generated by the quantum injected high-gain optical parametric amplification of a single photon. The physical configu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e8669a48327158bf4ef16957f0b96a5f
https://doi.org/10.1103/physreva.74.062304
https://doi.org/10.1103/physreva.74.062304
We report the first experimental realizations of the 1 → M universal cloning machine. Two approaches are carefully described: the adoption of a state symmetrization linear optical procedure and of the quantum injected optical parametric amplifier.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f990d3474ad2644433399632b51d3209
http://hdl.handle.net/11573/366719
http://hdl.handle.net/11573/366719
Publikováno v:
Physical review letters. 95(24)
We report the realization of an entangled quantum superposition of $M\ensuremath{\sim}12$ photons by multiple universal cloning of a single-photon qubit via the high gain, quantum-injected optical parametric amplification. The system has been found e
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fa9f0104c33651e191b00f1e36cad4b7
https://pubmed.ncbi.nlm.nih.gov/16384354
https://pubmed.ncbi.nlm.nih.gov/16384354
The quantum cloner machine maps an unknown arbitrary input qubit into two optimal clones and one optimal flipped qubit. By combining linear and non-linear optical methods we experimentally implement a scheme that, after the cloning transformation, re
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c013420f085ee5549101d0102c13cc10
The multiphoton states generated by high-gain spontaneous parametric down-conversion (SPDC) in presence of large losses are investigated theoretically and experimentally. The explicit form for the two-photon output state has been found to exhibit a W
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::057c912c8714147350f949fe4c0608f0
Publikováno v:
Physical Review A. 70
The paper gives a thorough analysis of the spin-flipping action induced by the Faraday mirror on any qubit realized by a polarization-encoded single photon. The results of the theory show that the device acts as a nonuniversal NOT gate, in full agree
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8635e999f29a2a07c0ddd1f85234a6ff
https://doi.org/10.1103/physreva.70.040301
https://doi.org/10.1103/physreva.70.040301
In the last years a thorough research effort has been devoted to the experimental realization of the optimal approximations of the quantum cloning and the quantum flipping of an unknown qubit. Even if these two processes are unrealizable in their exa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1937258092e75ad3f91da77b173bf907
http://hdl.handle.net/11573/142293
http://hdl.handle.net/11573/142293