- #1
Danny Boy
- 49
- 3
In a https://jila.colorado.edu/thompson/sites/default/files/pdf/PhysRevLett.113.154101_0.pdf on quantum synchronization, they introduce the setup given in the attached 'Fig1.png'. I would like confirm a few concepts regarding this setup. The setup is described in the following way:
The general setup is shown schematically in Fig.1. Two
ensembles, each containing ##N## two-level atoms with excited
state ##|e \rangle## and ground state ##| g \rangle##, are collectively coupled to a
high-quality optical cavity. The transition frequencies of the
atoms in ensembles ##A## and ##B## are detuned from the cavity
resonance by ##δ/2## and ##−δ/2##, respectively. This could
be achieved by spatially separating the ensembles and
applying an inhomogeneous magnetic field to induce a
differential Zeeman shift. The atoms in both ensembles are
pumped incoherently to the excited state, as could be
realized by driving a transition to a third state that rapidly
decays to ##|e\rangle##.
Questions:
The general setup is shown schematically in Fig.1. Two
ensembles, each containing ##N## two-level atoms with excited
state ##|e \rangle## and ground state ##| g \rangle##, are collectively coupled to a
high-quality optical cavity. The transition frequencies of the
atoms in ensembles ##A## and ##B## are detuned from the cavity
resonance by ##δ/2## and ##−δ/2##, respectively. This could
be achieved by spatially separating the ensembles and
applying an inhomogeneous magnetic field to induce a
differential Zeeman shift. The atoms in both ensembles are
pumped incoherently to the excited state, as could be
realized by driving a transition to a third state that rapidly
decays to ##|e\rangle##.
Questions:
- We set the ensembles frequency transitions to ##δ/2## and ##−δ/2## respectively. Do we then model this as individual dipoles oscillating at those frequencies in their respective ensembles?
- Is the sequence of the setup to first put all the particles in a spin up state and then initiate the respective detuned oscillations? Is this what the image is showing?