TY - JOUR
T1 - Quantum coherence in photo-ionisation with tailored XUV pulses
AU - Carlström, Stefanos
AU - Mauritsson, Johan
AU - Schafer, Kenneth J.
AU - L'Huillier, Anne
AU - Gisselbrecht, Mathieu
PY - 2018/1/14
Y1 - 2018/1/14
N2 - Ionisation with ultrashort pulses in the extreme ultraviolet (XUV) regime can be used to prepare an ion in a superposition of spin-orbit substates. In this work, we study the coherence properties of such a superposition, created by ionising xenon atoms using two phase-locked XUV pulses at different frequencies. In general, if the duration of the driving pulse exceeds the quantum beat period, dephasing will occur. If however, the frequency difference of the two pulses matches the spin-orbit splitting, the coherence can be efficiently increased and dephasing does not occur.
AB - Ionisation with ultrashort pulses in the extreme ultraviolet (XUV) regime can be used to prepare an ion in a superposition of spin-orbit substates. In this work, we study the coherence properties of such a superposition, created by ionising xenon atoms using two phase-locked XUV pulses at different frequencies. In general, if the duration of the driving pulse exceeds the quantum beat period, dephasing will occur. If however, the frequency difference of the two pulses matches the spin-orbit splitting, the coherence can be efficiently increased and dephasing does not occur.
KW - atomic double slit
KW - coherent ionization
KW - ultra-fast entanglement
U2 - 10.1088/1361-6455/aa96e7
DO - 10.1088/1361-6455/aa96e7
M3 - Article
AN - SCOPUS:85038622606
SN - 0953-4075
VL - 51
JO - Journal of Physics B: Atomic, Molecular and Optical Physics
JF - Journal of Physics B: Atomic, Molecular and Optical Physics
IS - 1
M1 - 015201
ER -