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Coherent manipulation of spin-wave vector for polarization of photons in an atomic ensemble.
- Source :
-
Physical Review A: Atomic, Molecular & Optical Physics . Oct2011, Vol. 84 Issue 4-A, p043430-1-043430-5. 5p. - Publication Year :
- 2011
-
Abstract
- We experimentally demonstrate the manipulation of two orthogonal components of a spin wave in an atomic ensemble. Based on Raman two-photon transition and Larmor spin precession induced by magnetic field pulses, the coherent rotations between the two components of the spin wave are controllably achieved. Successively, the two manipulated spin-wave components are mapped into two orthogonal polarized optical emissions. By measuring Ramsey fringes of the retrieved optical signals, the π/2-pulse fidelity of ~96% is obtained. The presented manipulation scheme can be used to build an arbitrary rotation for qubit operations in quantum information processing based on atomic ensembles. [ABSTRACT FROM AUTHOR]
- Subjects :
- *PHOTONS
*OPTICS
*PHYSICS
*SPIN waves
*MAGNETIC fields
Subjects
Details
- Language :
- English
- ISSN :
- 10502947
- Volume :
- 84
- Issue :
- 4-A
- Database :
- Academic Search Index
- Journal :
- Physical Review A: Atomic, Molecular & Optical Physics
- Publication Type :
- Periodical
- Accession number :
- 70064232
- Full Text :
- https://doi.org/10.1103/PhysRevA.84.043430