Repulsive photons in a quantum nonlinear medium

Cantu, Sergio; Venkatramani, Aditya V.; Xu, Wenchao; Zhou, Leo; Jelenković, B. M.; Lukin, Mikhail D.; Vuletić, Vladan

doi:10.48550/arxiv.1911.02586

Cited by 2 publications

(5 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Considering random positions of atoms in an atomic cloud adds another layer of complication. Different approaches have been taken to predict regimes of non-classical Rydberg excitation statistics [24][25][26] which led to experimental observation of the Rydberg anti-blockade effect [27,28] and quantum nonlinear optics [21,22]. In this work, we explored the effect of experimentally controlled parameters such as pulse duration, detuning, and amplitudes, to find the optimal conditions leading to highly non-classical Rydberg excitation statistics.…”

Section: Discussionmentioning

confidence: 99%

“…This is to avoid noise at a potential retrieval where the Rydberg excitations are converted back to photons through |e → |g transition by re-applying the control field (Ω 2 ). This will help to confirm generation of non-classical Rydberg excitation statistics by measuring autocorrelation values of recovered photons [21].…”

Section: A Raman-type Couplingmentioning

confidence: 96%

“…The Rydberg blockade effect in atomic ensembles allows one to access a collectively-enhanced lightatom coupling with an effectively isolated two-level system. This has applications in generating single photons [13][14][15], quantum nonlinear optics effects [16], strong interactions between photons [17][18][19][20][21][22], and the development of quantum repeaters [23].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Generation of doubly excited Rydberg states based on Rydberg antiblockade in a cold atomic ensemble

Taylor,

Sinclair,

Bonsma-Fisher

et al. 2019

Preprint

View full text Add to dashboard Cite

Interaction between Rydberg atoms can significantly modify Rydberg excitation dynamics. Under a resonant driving field the Rydberg-Rydberg interaction in high-lying states can induce shifts in the atomic resonance such that a secondary Rydberg excitation becomes unlikely leading to the Rydberg blockade effect. In a related effect, off-resonant coupling of light to Rydberg states of atoms contributes to the Rydberg anti-blockade effect where the Rydberg interaction creates a resonant condition that promotes a secondary excitation in a Rydberg atomic gas. Here, we study the light-matter interaction and dynamics of off-resonant two-photon excitations and include two-and three-atom Rydberg interactions and their effect on excited state dynamics in an ensemble of cold atoms. In an experimentally-motivated regime, we find the optimal physical parameters such as Rabi frequencies, two-photon detuning, and pump duration to achieve significant enhancement in the probability of generating doubly-excited collective atomic states. This results in large auto-correlation values due to the Rydberg anti-blockade effect and makes this system a potential candidate for a high-purity two-photon Fock state source.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: A Raman-type Couplingmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Generation of doubly excited Rydberg states based on Rydberg antiblockade in a cold atomic ensemble

Taylor,

Sinclair,

Bonsma-Fisher

et al. 2019

Preprint

View full text Add to dashboard Cite

show abstract

“…The interplay between external driving and dissipation in strongly interacting quantum many-body systems leads to the emergence of rich nonequilibrium dynamics not found in closed quantum systems [1,2], yet their theoretical analysis is extremely difficult [3]. This is especially true in Rydberg polariton systems [4][5][6][7][8][9][10][11][12][13][14][15][16], where the metastable character of the Rydberg excitation provides a natural dissipative element. Here, we show that a variational analysis can successfully describe this challenging many-body problem.…”

mentioning

confidence: 99%

“…Early experiments have observed a decline of the EIT feature due to strong Rydberg interactions [19,20]. More recent experiments have demonstrated the appearance of a strongly interacting polariton quasiparticle consisting of both light and atomic matter, in a many-body setting [6][7][8] as well as on the single polariton level [9][10][11][12]. The theoretical analysis of these systems have so far been limited to an exact treatment of up to two interacting Rydberg polaritons [13], or to large quantum many-body simulations in the absence of the decay of the Rydberg state [14][15][16].…”

mentioning

confidence: 99%

Quantum Many-Body Dynamics of Driven-Dissipative Rydberg Polaritons

2020

View full text Add to dashboard Cite

We study the propagation of strongly interacting Rydberg polaritons through an atomic medium in a one-dimensional optical lattice. We derive an effective single-band Hubbard model to describe the dynamics of the dark state polaritons under realistic assumptions. Within this model, we analyze the driven-dissipative transport of polaritons through the system by considering a coherent drive on one side and by including the spontaneous emission of the metastable Rydberg state. Using a variational approch to solve the many-body problem, we find strong antibunching of the outgoing photons despite the losses from the Rydberg state decay.

show abstract

Repulsive photons in a quantum nonlinear medium

Cited by 2 publications

References 0 publications

Generation of doubly excited Rydberg states based on Rydberg antiblockade in a cold atomic ensemble

Generation of doubly excited Rydberg states based on Rydberg antiblockade in a cold atomic ensemble

Quantum Many-Body Dynamics of Driven-Dissipative Rydberg Polaritons

Contact Info

Product

Resources

About