247 citations · 430 across the 4 of their papers we have counts for
6 papers
Optical coherences and wavelength mismatch in ladder systems
A. Urvoy, C. Carr, R. Ritter +3
We investigate experimentally and theoretically the coherent and incoherent processes in open 3-level ladder systems in room temperature gases and identify in which regime electrom…
Cooperative non-equilibrium phase transition in a dilute Rydberg ensemble
Christopher Carr, Ralf Ritter, Christopher Wade +2
We demonstrate a non-equilibrium phase transition in a dilute thermal atomic gas. The phase transition, between states of low and high Rydberg occupancy, is induced by resonant dip…
Three-photon electromagnetically induced transparency using Rydberg states
Christopher Carr, Monsit Tanasittikosol, Armen Sargsyan +3
We demonstrate electromagnetically induced transparency (EIT) in a four-level cascade system where the upper level is a Rydberg state. The observed spectral features are sub-Dopple…
Sub-natural linewidths in excited-state spectroscopy
M. Tanasittikosol, C. Carr, C. S. Adams +1
We investigate, theoretically and experimentally, absorption on an excited-state atomic transition in a thermal vapor where the lower state is coherently pumped. We find that the t…
Polarization spectroscopy of an excited state transition
Christopher Carr, Charles S. Adams, Kevin J. Weatherill
We demonstrate polarization spectroscopy of an excited state transition in room temperature cesium vapor. An anisotropy induced by a circularly polarized pump beam on the D2 transi…
Electrometry near a dielectric surface using Rydberg electromagnetically induced transparency
R. P. Abel, C. Carr, U. Krohn +1
Electrometry near a dielectric surface is performed using Rydberg electromagnetically induced transparency (EIT). The large polarizability of high n-state Rydberg atoms gives this…