Berlin 2014 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 65: Quantum information: Quantum computers and communication II

Q 65.5: Vortrag

Freitag, 21. März 2014, 15:00–15:15, DO26 207

Spectral properties of single photons emitted by a single ion — •Tristan Tentrup, Marc Bienert, Jürgen Eschner, and Giovanna Morigi — Saarland University, Saarbrücken, Germany

To realize quantum networks one needs flying qubits that transfer the information between the nodes. This can be implemented by means of single ions (the nodes) that emit and absorb single photons (the flying qubits). The probability of absorption of single photons in this case is also determined by the spectral shape of the incident photon. Hence it is important to characterize and control the photon spectral properties. In this contribution we theoretically characterize the wave packet of a photon emitted by a single atom following a spontaneous Raman transition in a 3-level scheme, including the effect of the finite branching ratio. We determine the state of the emitted photon for several excitation schemes which have been experimentally discussed so far.