title: Realization of the Dicke model using cavity-assisted Raman transitions.
abstract: We realize an open version of the Dicke model by coupling two hyperfine ground states using two cavity-assisted Raman transitions. The interaction due to only one of the couplings is described by the Tavis-Cummings model and we observe a normal mode splitting in the transmission around the dispersively shifted cavity. With both couplings present the dynamics are described by the Dicke model and we measure the onset of superradiant scattering into the cavity above a critical coupling strength.
authors: Centre for Quantum Technologies, 3 Science Drive 2, Singapore 117543.
authors: Markus P
authors: MP
authors: Baden
authors: Centre for Quantum Technologies, 3 Science Drive 2, Singapore 117543.
authors: Kyle J
authors: KJ
authors: Arnold
authors: Department of Physics, The Norwegian University of Science and Technology, N-7491 Trondheim, Norway.
authors: Arne L
authors: AL
authors: Grimsmo
authors: Department of Physics, University of Auckland, Private Bag 92019, Auckland, New Zealand.
authors: Scott
authors: S
authors: Parkins
authors: Centre for Quantum Technologies, 3 Science Drive 2, Singapore 117543 and Department of Physics, National University of Singapore, 3 Science Drive 2, Singapore 117543.
authors: Murray D
authors: MD
authors: Barrett