Coherent control of atomic qubits by non-classical light*
1 Department of Physics, M.V. Lomonosov Moscow State University, Leninskie Gory, 1-2, 119991 Moscow, Russia
2 D.V. Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, 1(2), Leninskie gory, GSP-1, 119234 Moscow, Russia
3 Department of Physics, University of Paderborn, Warburger Str. 100, 33098 Paderborn, Germany
Received: 14 November 2016
Published online: 18 May 2017
In this work we investigate analytically the interaction between a quantum atomic model system and non-classical light and suggest a method to transfer phase information from the field qubit to the atomic one. A rather realistic atomic system with bound levels and the continuum is considered. The influence of ionization on the possibility of the phase transfer is analyzed. The atomic state formed during the interaction is shown to be controlled by the relative phase of the field qubit. The possibility to measure the transferred phase is demonstrated.
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag 2017