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Bulletin of the American Physical Society

Probe spectrum of Rydberg atoms undergoing collective spontaneous emission

Lyndon Cayayan, Jacob Pauley, James Clemens

Published Oct 4, 2013• 0 citations
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An analysis is performed on a open quantum system of driven and damped Rydberg atoms.The interactions between Rydberg states are characterized by dipole-dipole energy shifts that give rise to a Rydberg blockade with on-resonant driving, and collective quantum jumps while driving with an off-resonant nonzero detuning.Under fully independent emission the system admits a bistable steady state exhibiting collective quantum jumps, in which quantum fluctuations drive transitions between two bistable values predicted by a quasiclassical meanfield model.When competition between fully independent and fully collective emission is considered in a two-channel emission model, a collective emission enhancement impacts the presence of the quantum jumps by shifting the predicted region of bistability for the system to different values of detuning.It is shown that jumps can be recovered to an extent, but that the bistability is ultimately destroyed under fully collective emission.

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Spontaneous emission of a sodium Rydberg atom close to an optical nanofibre

Erwan Stourm, Y Zhang, Maxence Lepers +5 more

We report on numerical calculations of the spontaneous emission rate of a Rydberg-excited sodium atom in the vicinity of an optical nanofibre. In particular, we study how this rate varies with the distance of the atom to the fibre, the fibre's radius, the symmetry s or p of the Rydberg state as well as its principal quantum number. We find that a fraction of the spontaneously emitted light can be captured and guided along the fibre. This suggests that such a setup could be used for networking atomic ensembles, manipulated in a collective way due to the Rydberg blockade phenomenon.

arXiv:1810.06887•Journal of Physics B Atomic Molecular and Optical Physics•Jan 2, 2019•13 citations
An analysis is performed on a open quantum system of driven and damped Rydberg atoms.The interactions between Rydberg states are characterized by dipole-dipole energy shifts that give rise to a Rydberg blockade with on-resonant driving, and collective quantum jumps while driving with an off-resonant nonzero detuning.Under fully independent emission the system admits a bistable steady state exhibiting collective quantum jumps, in which quantum fluctuations drive transitions between two bistable values predicted by a quasiclassical meanfield model.When competition between fully independent and fully collective emission is considered in a two-channel emission model, a collective emission enhancement impacts the presence of the quantum jumps by shifting the predicted region of bistability for the system to different values of detuning.It is shown that jumps can be recovered to an extent, but that the bistability is ultimately destroyed under fully collective emission.
We report on numerical calculations of the spontaneous emission rate of a Rydberg-excited sodium atom in the vicinity of an optical nanofibre. In particular, we study how this rate varies with the distance of the atom to the fibre, the fibre's radius, the symmetry s or p of the Rydberg state as well as its principal quantum number. We find that a fraction of the spontaneously emitted light can be captured and guided along the fibre. This suggests that such a setup could be used for networking atomic ensembles, manipulated in a collective way due to the Rydberg blockade phenomenon.
We report on numerical calculations of the spontaneous emission rate of a Rydberg-excited sodium atom in the vicinity of an optical nanofibre. In particular, we study how this rate varies with the distance of the atom to the fibre, the fibre's radius, the symmetry s or p of the Rydberg state as well as its principal quantum number. We find that a fraction of the spontaneously emitted light can be captured and guided along the fibre. This suggests that such a setup could be used for networking atomic ensembles, manipulated in a collective way due to the Rydberg blockade phenomenon.