Heralded generation of multiphoton entanglement
- Author(s)
- Philip Walther, Markus Aspelmeyer, Anton Zeilinger
- Abstract
We present a scheme, based only on linear optics and standard photon detection, that allows to generate heralded multiphoton entangled states of arbitrary photon number from spontaneous parametric downconversion (PDC) in the weak interaction regime. The scheme also works in the strong interaction regime, i.e., for the production of large photon numbers, when photon-number resolving detectors with nearly perfect quantum efficiency are used. In addition, the same setup can be used for quantum metrology as multiphoton interferometer with sensitivity at the Heisenberg limit.
- Organisation(s)
- External organisation(s)
- Österreichische Akademie der Wissenschaften (ÖAW)
- Journal
- Physical Review A
- Volume
- 75
- No. of pages
- 5
- ISSN
- 1050-2947
- DOI
- https://doi.org/10.1103/PhysRevA.75.012313
- Publication date
- 01-2007
- Peer reviewed
- Yes
- Austrian Fields of Science 2012
- 103026 Quantum optics
- Keywords
- Portal url
- https://ucris.univie.ac.at/portal/en/publications/heralded-generation-of-multiphoton-entanglement(14f83b0a-5a3a-422a-ab28-cc495633d014).html