A strongly interacting polaritonic quantum dot

Jia, Ningyuan; Schine, Nathan; Georgakopoulos, Alexandros; Ryou, Albert; Clark, Logan W.; Sommer, Ariel; Simon, Jonathan

doi:10.1038/s41567-018-0071-6

Cited by 76 publications

(89 citation statements)

References 40 publications

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“…Even though our theory is focused on the non-planar ring cavity configuration, where Landau levels for photons and Rydberg-EIT photon blockade have been recently observed [7,10], the ideas presented here are fully general and may be extended to other optical configurations combining a synthetic magnetic field for photons and strong photonphoton interactions.…”

Section: Discussionmentioning

confidence: 99%

“…In contrast to the lattice geometries of [5], the multimode dynamics takes place in this system along the continuous two-dimensional transverse plane and has already revealed photonic Landau levels in the synthetic magnetic field. Strong photon-photon effective interactions can then be induced by coupling photons to atomic transitions in the so-called Rydberg EIT configuration [8]: the strong interactions between Rydberg atoms translate in analogous interactions between polaritons [9] and first experimental evidence of photon blockade in the lowest mode has been recently reported in [10].…”

Section: Introductionmentioning

confidence: 99%

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Generation and spectroscopic signatures of a fractional quantum Hall liquid of photons in an incoherently pumped optical cavity

Umucalılar

Carusotto

2017

Phys. Rev. A

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We theoretically investigate a driven-dissipative model of strongly interacting photons in a nonlinear optical cavity in the presence of a synthetic magnetic field. We show the possibility of using a frequency-dependent incoherent pump to create a strongly-correlated ν = 1/2 bosonic Laughlin state of light: thanks to the incompressibility of the Laughlin state, fluctuations in the total particle number and excitation of edge modes can be tamed by imposing a suitable external potential profile for photons. We further propose angular momentum-selective spectroscopy of the emitted light as a tool to obtain unambiguous signatures of the microscopic physics of the quantum Hall liquid of light.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Generation and spectroscopic signatures of a fractional quantum Hall liquid of photons in an incoherently pumped optical cavity

Umucalılar

Carusotto

2017

Phys. Rev. A

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“…Besides potential applications in realization of strongly interacting photonic systems, our findings suggest that nonlinear optical measurements could provide information about fractional quantum Hall states that is not accessible in linear optical response.Polaritons have recently attracted considerable interest, motivated by the fact that their interactions can be engineered almost at will through the tunability of their matter component. For example, strongly interacting Rydberg polaritons have recently been obtained using the nonlinear behavior of Rydberg excitations in an ensemble of atoms [12], which led to the demonstration of Rydberg polariton blockade [13] where the presence of a single polariton in a well-delimited region of space prevents the resonant injection of other polaritons. In parallel, efforts are being made to realize polariton blockade in condensed matter systems that hold great potential for realizing compact and integrated synthetic quantum materials [3].…”

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confidence: 99%

Nonlinear optics in the fractional quantum Hall regime

Knüppel

Ravets

Kroner

et al. 2019

Nature

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These authors contributed equally to this work.Engineering strong interactions between optical photons is a great challenge for quantum science. Envisioned applications range from the realization of photonic gates for quantum information processing [1] to synthesis of photonic quantum materials for investigation of strongly-correlated drivendissipative systems [2]. Polaritonics, based on the strong coupling of photons to atomic or electronic excitations in an optical resonator, has emerged as a promising approach to implement those tasks [3]. Recent experiments demonstrated the onset of quantum correlations in the exciton-polariton system [4,5], showing that strong polariton blockade [6] could be achieved if interactions were an order of magnitude stronger. Here, we report time resolved four-wave mixing experiments on a two-dimensional electron system embedded in an optical cavity [7], demonstrating that polariton-polariton interactions are strongly enhanced when the electrons are initially in a fractional quantum Hall state. Our experiments indicate that in addition to strong correlations in the electronic ground state, exciton-electron interactions leading to the formation of polaron polaritons [8-11] play a key role in enhancing the nonlinear optical response. Besides potential applications in realization of strongly interacting photonic systems, our findings suggest that nonlinear optical measurements could provide information about fractional quantum Hall states that is not accessible in linear optical response.Polaritons have recently attracted considerable interest, motivated by the fact that their interactions can be engineered almost at will through the tunability of their matter component. For example, strongly interacting Rydberg polaritons have recently been obtained using the nonlinear behavior of Rydberg excitations in an ensemble of atoms [12], which led to the demonstration of Rydberg polariton blockade [13] where the presence of a single polariton in a well-delimited region of space prevents the resonant injection of other polaritons. In parallel, efforts are being made to realize polariton blockade in condensed matter systems that hold great potential for realizing compact and integrated synthetic quantum materials [3]. Exciton polaritons in semiconductor materials are part light part matter particles that arise from the strong coupling of a quantum well exciton and a cavity photon [14]. These photonic particles inherit a nonlinear behavior from exciton-exciton interactions [2,15,16]. For efficient blockade to be obtained, the nonlinearity U needs to be greater than the inverse lifetime γ of the polaritons [6]. Recent state-of-the art experiments based on photon correlation measurements in semi-integrated microcavities attained optimized values of the ratio U/γ 0.1 in a photonic dot with about 3 µm 2 area [4,5]. These experiments represent the culmination of decade long technological developments aimed at increasing U/γ through reducing the photonic mode area [17][18][19] as well as increasing t...

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“…Though BECs were employed in the latter two experiments, the number of modes was insufficient to mediate short-range interactions. In addition to the experimental platform described in this paper, prospects are bright also for the future observation of the self-organization of atoms coupled to photonic bandgap waveguides [33] and for creating and exploring topological states with Rydberg atoms coupled to multimode twisted ring cavities [3,34].…”

Section: Introductionmentioning

confidence: 99%

Tunable-Range, Photon-Mediated Atomic Interactions in Multimode Cavity QED

et al. 2018

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Optical cavity QED provides a platform with which to explore quantum many-body physics in drivendissipative systems. Single-mode cavities provide strong, infinite-range photon-mediated interactions among intracavity atoms. However, these global all-to-all couplings are limiting from the perspective of exploring quantum many-body physics beyond the mean-field approximation. The present work demonstrates that local couplings can be created using multimode cavity QED. This is established through measurements of the threshold of a superradiant, self-organization phase transition versus atomic position. Specifically, we experimentally show that the interference of near-degenerate cavity modes leads to both a strong and tunable-range interaction between Bose-Einstein condensates (BECs) trapped within the cavity. We exploit the symmetry of a confocal cavity to measure the interaction between real BECs and their virtual images without unwanted contributions arising from the merger of real BECs. Atom-atom coupling may be tuned from short range to long range. This capability paves the way toward future explorations of exotic, strongly correlated systems such as quantum liquid crystals and driven-dissipative spin glasses.

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A strongly interacting polaritonic quantum dot

Cited by 76 publications

References 40 publications

Generation and spectroscopic signatures of a fractional quantum Hall liquid of photons in an incoherently pumped optical cavity

Generation and spectroscopic signatures of a fractional quantum Hall liquid of photons in an incoherently pumped optical cavity

Nonlinear optics in the fractional quantum Hall regime

Tunable-Range, Photon-Mediated Atomic Interactions in Multimode Cavity QED

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