Creation of maximally entangled photon-number states using optical fiber multiports
Abstract
We theoretically demonstrate a method for producing the maximally path-entangled state (1/(2))(|N,0>+exp[iNφ]|0,N>) using intensity-symmetric multiport beam splitters, single photon inputs, and either photon-counting postselection or conditional measurement. The use of postselection enables successful implementation with non-unit efficiency detectors. We also demonstrate how to make the same state more conveniently by replacing one of the single photon inputs by a coherent state.
- Publication:
-
Physical Review A
- Pub Date:
- November 2003
- DOI:
- arXiv:
- arXiv:quant-ph/0304135
- Bibcode:
- 2003PhRvA..68e2315P
- Keywords:
-
- 03.67.Mn;
- 42.50.Dv;
- 42.50.St;
- 06.30.Bp;
- Entanglement production characterization and manipulation;
- Nonclassical states of the electromagnetic field including entangled photon states;
- quantum state engineering and measurements;
- Nonclassical interferometry subwavelength lithography;
- Spatial dimensions;
- Quantum Physics
- E-Print:
- 4 pages, 1 figure. REVTeX4. Replaced with published version