Details

Autor(en) / Beteiligte

• Zhai, Shang-Yu
• Liu, Yi-Mou
• Wu, Jin-Hui

Titel

Antiferromagnet phase of a square Rydberg lattice in the ladder configuration

Ist Teil von

• The European physical journal. D, Atomic, molecular, and optical physics, 2021-09, Vol.75 (9), Article 249

Ort / Verlag

Berlin/Heidelberg: Springer Berlin Heidelberg

Erscheinungsjahr

2021

Quelle

SpringerNature Journals

Beschreibungen/Notizen

• We study the Rydberg excitation of a square atomic lattice driven by a pumping and a coupling fields into the ladder configuration via Monte Carlo simulations based on density matrix equations. Single-atom Rydberg population can be very close to unit benefiting from the formation of a dark state such that the antiferromagnet (AFM) phase has been observed at finite two-photon detunings owing to moderate van der Waals ( vdW ) interactions. We note in particular that the pumping Rabi frequency is more important than the coupling Rabi frequency in manipulating the AFM phase to occur for specific pumping detunings, coupling detunings, and nearest-neighbor vdW potentials. Moreover, the AFM phase may enter a saturation regime in terms of its parameter region when the boundary effect of vdW interactions is negligible for a large enough lattice size.