We suggest and demonstrate a scheme to compensate spatial and spectral decoherence effects in the generation of polarization entangled states by type-I parametric downconversion. In our device, a programmable spatial light modulator imposes a polarization dependent phase-shift on different spatial sections of the overall downconversion output and this effect is exploited to realize an effective purification technique for polarization entanglement.
Programmable purification of type-I polarization-entanglement / S. Cialdi, D. Brivio, M. Paris. - In: APPLIED PHYSICS LETTERS. - ISSN 0003-6951. - 97:4(2010 Jul 26), pp. 041108.041108.1-041108.041108.3. [10.1063/1.3467832]
Programmable purification of type-I polarization-entanglement
S. CialdiPrimo
;D. BrivioSecondo
;M. ParisUltimo
2010
Abstract
We suggest and demonstrate a scheme to compensate spatial and spectral decoherence effects in the generation of polarization entangled states by type-I parametric downconversion. In our device, a programmable spatial light modulator imposes a polarization dependent phase-shift on different spatial sections of the overall downconversion output and this effect is exploited to realize an effective purification technique for polarization entanglement.
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