Atomic memories for flying photonic qubits are an essential ingredient for many applications like e.g. quantum repeaters. Verification of the coherent transfer of information from a light field to an atomic superposition is usually obtained using an optical read-out. In this paper we report the direct detection of the atomic coherence by means of atom interferometry. We experimentally verified both that a bichromatic laser field closing a Raman transition imprints a distinct, controllable phase on the atomic coherence and that it can be recovered after a variable time delay.
Reading the phase of a Raman excitation with a multi-state atomic interferometer / P. Lombardi;F. Schaefer;I. Herrera;S. Cherukattil;J. Petrovic;C. Lovecchio;F. Marin;F. S. Cataliotti. - In: OPTICS EXPRESS. - ISSN 1094-4087. - ELETTRONICO. - 22:(2014), pp. 19141-19148. [10.1364/OE.22.019141]
Reading the phase of a Raman excitation with a multi-state atomic interferometer
MARIN, FRANCESCO;CATALIOTTI, FRANCESCO SAVERIO
2014
Abstract
Atomic memories for flying photonic qubits are an essential ingredient for many applications like e.g. quantum repeaters. Verification of the coherent transfer of information from a light field to an atomic superposition is usually obtained using an optical read-out. In this paper we report the direct detection of the atomic coherence by means of atom interferometry. We experimentally verified both that a bichromatic laser field closing a Raman transition imprints a distinct, controllable phase on the atomic coherence and that it can be recovered after a variable time delay.File | Dimensione | Formato | |
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