X entanglement

the nonfactorable spatiotemporal structure of biphoton correlation

A. Gatti, E. Brambilla, L. Caspani, O. Jedrkiewicz, L. A. Lugiato

Research output: Contribution to journalArticle

51 Citations (Scopus)

Abstract

We investigate the spatiotemporal structure of the biphoton entanglement in parametric down-conversion (PDC) and we demonstrate its nonfactorable X-shaped geometry. Such a structure gives access to the ultrabroad bandwidth of PDC, and can be exploited to achieve a biphoton temporal localization in the femtosecond range. This extreme localization is connected to our ability to resolve the photon positions in the source near field. The nonfactorability opens the possibility of tailoring the temporal entanglement by acting on the spatial degrees of freedom of twin photons.

Original languageEnglish
Article number223601
Number of pages4
JournalPhysical Review Letters
Volume102
Issue number22
DOIs
Publication statusPublished - 4 Jun 2009

Fingerprint

photons
near fields
degrees of freedom
bandwidth
geometry

Keywords

  • femtosecond range
  • near fields
  • parametric down-conversion
  • spatial degrees
  • spatio-temporal structures
  • temporal localization
  • twin photons

Cite this

Gatti, A. ; Brambilla, E. ; Caspani, L. ; Jedrkiewicz, O. ; Lugiato, L. A. / X entanglement : the nonfactorable spatiotemporal structure of biphoton correlation. In: Physical Review Letters. 2009 ; Vol. 102, No. 22.
@article{ef58c8bda5cf4a6daeb314f028474d06,
title = "X entanglement: the nonfactorable spatiotemporal structure of biphoton correlation",
abstract = "We investigate the spatiotemporal structure of the biphoton entanglement in parametric down-conversion (PDC) and we demonstrate its nonfactorable X-shaped geometry. Such a structure gives access to the ultrabroad bandwidth of PDC, and can be exploited to achieve a biphoton temporal localization in the femtosecond range. This extreme localization is connected to our ability to resolve the photon positions in the source near field. The nonfactorability opens the possibility of tailoring the temporal entanglement by acting on the spatial degrees of freedom of twin photons.",
keywords = "femtosecond range, near fields, parametric down-conversion, spatial degrees, spatio-temporal structures, temporal localization, twin photons",
author = "A. Gatti and E. Brambilla and L. Caspani and O. Jedrkiewicz and Lugiato, {L. A.}",
year = "2009",
month = "6",
day = "4",
doi = "10.1103/PhysRevLett.102.223601",
language = "English",
volume = "102",
journal = "Physical Review Letters",
issn = "0031-9007",
number = "22",

}

X entanglement : the nonfactorable spatiotemporal structure of biphoton correlation. / Gatti, A.; Brambilla, E.; Caspani, L.; Jedrkiewicz, O.; Lugiato, L. A.

In: Physical Review Letters, Vol. 102, No. 22, 223601, 04.06.2009.

Research output: Contribution to journalArticle

TY - JOUR

T1 - X entanglement

T2 - the nonfactorable spatiotemporal structure of biphoton correlation

AU - Gatti, A.

AU - Brambilla, E.

AU - Caspani, L.

AU - Jedrkiewicz, O.

AU - Lugiato, L. A.

PY - 2009/6/4

Y1 - 2009/6/4

N2 - We investigate the spatiotemporal structure of the biphoton entanglement in parametric down-conversion (PDC) and we demonstrate its nonfactorable X-shaped geometry. Such a structure gives access to the ultrabroad bandwidth of PDC, and can be exploited to achieve a biphoton temporal localization in the femtosecond range. This extreme localization is connected to our ability to resolve the photon positions in the source near field. The nonfactorability opens the possibility of tailoring the temporal entanglement by acting on the spatial degrees of freedom of twin photons.

AB - We investigate the spatiotemporal structure of the biphoton entanglement in parametric down-conversion (PDC) and we demonstrate its nonfactorable X-shaped geometry. Such a structure gives access to the ultrabroad bandwidth of PDC, and can be exploited to achieve a biphoton temporal localization in the femtosecond range. This extreme localization is connected to our ability to resolve the photon positions in the source near field. The nonfactorability opens the possibility of tailoring the temporal entanglement by acting on the spatial degrees of freedom of twin photons.

KW - femtosecond range

KW - near fields

KW - parametric down-conversion

KW - spatial degrees

KW - spatio-temporal structures

KW - temporal localization

KW - twin photons

UR - http://www.scopus.com/inward/record.url?scp=66649100774&partnerID=8YFLogxK

UR - http://journals.aps.org/prl/

U2 - 10.1103/PhysRevLett.102.223601

DO - 10.1103/PhysRevLett.102.223601

M3 - Article

VL - 102

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 22

M1 - 223601

ER -