Quantum-state storage and processing for polarization qubits in an inhomogeneously broadened Λ-type three-level medium
Viscor, Daniel (Universitat Autònoma de Barcelona. Departament de Física)
Ferraro, Alessandro (Universitat Autònoma de Barcelona. Departament de Física)
Loiko, Yury (National Academy of Sciences of Belarus. B.I. Stepanov Institute of Physics)
Mompart Penina, Jordi (Universitat Autònoma de Barcelona. Departament de Física)
Ahufinger, Verònica (Universitat Autònoma de Barcelona. Departament de Física)
American Physical Society

Date:	2011
Abstract:	We address the propagation of a single-photon pulse with two polarization components, i. e. , a polarization qubit, in an inhomogeneously broadened "phaseonium" Λ-type three-level medium. We combine some of the nontrivial propagation effects characteristic for this kind of coherently prepared systems and the controlled reversible inhomogeneous broadening technique to propose several quantum information-processing applications, such as a protocol for polarization qubit filtering and sieving as well as a tunable polarization beam splitter. Moreover, we show that by imposing a spatial variation of the atomic coherence phase, an efficient quantum memory for the incident polarization qubit can be also implemented in Λ-type three-level systems.
Rights:	Tots els drets reservats.
Language:	Anglès
Document:	Article ; recerca ; Versió publicada
Published in:	Physical review. A, Vol. 84, Issue 4 (October 2011) , p. 042314-1-042314-8, ISSN 1050-2947

DOI: 10.1103/PhysRevA.84.042314

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