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Macroscopic Quantum State Analyzed Particle by Particle
| dc.contributor.author | Beduini, Federica A. |
| dc.contributor.author | Zielińska, Joanna Ada |
| dc.contributor.author | Lucivero, Vito G. |
| dc.contributor.author | Icaza Astiz, Yannick A. de |
| dc.contributor.author | Mitchell, Morgan W. |
| dc.contributor.other | Universitat Politècnica de Catalunya. Institut de Ciències Fotòniques |
| dc.date.accessioned | 2015-03-30T14:04:18Z |
| dc.date.available | 2015-03-30T14:04:18Z |
| dc.date.issued | 2015-03-27 |
| dc.identifier.citation | Beduini, Federica A. [et al.]. Macroscopic Quantum State Analyzed Particle by Particle. "Physical Review Letters", 27 Març 2015, vol. 114, núm. 120402. |
| dc.identifier.issn | 0031-9007 |
| dc.identifier.uri | http://hdl.handle.net/2117/27115 |
| dc.description.abstract | Macroscopic quantum phenomena, e.g., superconductivity and squeezing, are believed to result from entanglement of macroscopic numbers of particles. We report the first direct study of this kind of entanglement: we use discrete quantum tomography to reconstruct the joint quantum state of photon pairs extracted from polarization-squeezed light. Our observations confirm several predictions from spinsqueezing theory [Beduini et al., Phys. Rev. Lett. 111, 143601 (2013)], including strong entanglement and entanglement of all photon pairs within the squeezing coherence time. This photon-by-photon analysis may give insight into other macroscopic many-body systems, e.g., photon Bose-Einstein condensates. |
| dc.format.extent | 4 |
| dc.language.iso | eng |
| dc.publisher | ACS Publications |
| dc.subject | Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Telecomunicació òptica::Fotònica |
| dc.subject.lcsh | Quantum theory |
| dc.subject.other | Quantum mechanics |
| dc.title | Macroscopic Quantum State Analyzed Particle by Particle |
| dc.type | Article |
| dc.subject.lemac | Quàntums, Teoria dels |
| dc.description.peerreviewed | Peer Reviewed |
| dc.relation.publisherversion | https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.114.120402 |
| dc.rights.access | Open Access |
| dc.description.version | Postprint (published version) |
| dc.relation.projectid | info:eu-repo/grantAgreement/EC/FP7/280169/EU/Atomic Quantum Metrology/AQUMET |
| local.citation.author | Beduini, Federica A.; Zielińska, Joanna A.; Lucivero, Vito G.; Icaza Astiz, Yannick A. de; Mitchell, Morgan W. |
| local.citation.publicationName | Physical Review Letters |
| local.citation.volume | 114 |
| local.citation.number | 120402 |
