The C̆erenkov Effect Revisited: From Swimming Ducks to Zero Modes in Gravitational Analogues

Carusotto, Iacopo; Rousseaux, Germain

doi:10.1007/978-3-319-00266-8_6

Cited by 32 publications

(47 citation statements)

References 70 publications

(139 reference statements)

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“…These experiments could be further extended by using a Feshbach resonance to tune the interactions in an atom laser beam and investigate the effect of BEC barrier height/size on the resulting dynamics. In such case one should be able to study non-linear dynamics such as shock waves, soliton trains and vortices [3].…”

Section: Discussionmentioning

confidence: 99%

Bogoliubov-Cherenkov radiation in an atom laser

Henson¹,

Yue²,

Hodgman³

et al. 2018

Phys. Rev. A

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We develop a simple yet powerful technique to study Bogoliubov-Cherenkov radiation by producing a pulsed atom laser from a strongly confined Bose-Einstein condensate. Such radiation results when the atom laser pulse falls past a Bose-Einstein condensate at high-hypersonic speeds, modifying the spatial profile to display a characteristic twin jet structure and a complicated interference pattern. The experimental observations are in excellent agreement with mean-field numerical simulations and an analytic theory. Due to the highly hypersonic regime reached in our experiment, this system offers a highly controllable platform for future studies of condensed-matter analogs of quantum electrodynamics at ultrarelativistic speeds.

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Section: Discussionmentioning

confidence: 99%

Bogoliubov-Cherenkov radiation in an atom laser

Henson¹,

Yue²,

Hodgman³

et al. 2018

Phys. Rev. A

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“…Figure 3c shows the extremely supersonic regime with v c 0 s that occurs in the linear optics regime at very low incident intensities: in this case, the linear interference of the incident and scattered light is responsible for parabolic shape of the fringes. A complete discussion of the rich features shown by the intensity modulation patterns in the different regimes can be found in the literature, in particular in [1, 20,21,23]. Given the simple relation (2.3) between the incidence angle and the flow speed, the subsonic v < c 0 s condition for superfluid flow translates in the present propagating geometry into an intensity-dependent upper bound on the (small) incidence angle…”

Section: Suppressed Scattering From a Localized Defectmentioning

confidence: 96%

Superfluid light in bulk nonlinear media

Carusotto

2014

Proc. R. Soc. A.

Self Cite

117

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We review how the paraxial approximation naturally leads to a hydrodynamic description of light propagation in a bulk Kerr nonlinear medium in terms of a wave equation analogous to the GrossPitaevskii equation for the order parameter of a superfluid. The main features of the many-body collective dynamics of the fluid of light in this propagating geometry are discussed: generation and observation of Bogoliubov sound waves in the fluid of light is first described. Experimentally accessible manifestations of superfluidity are then highlighted. Perspectives in view of realizing analogue models of gravity are finally given.

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“…Considering the Bogoliubov theory of weak perturbations on top of a uniform fluid of light, the dispersion relation reads [16,38]…”

Section: S2 Dispersion Relation and Healing Lengthmentioning

confidence: 99%

Superfluid motion and drag-force cancellation in a fluid of light

et al. 2018

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Quantum fluids of light merge many-body physics and nonlinear optics, revealing quantum hydrodynamic features of light when it propagates in nonlinear media. One of the most outstanding evidence of light behaving as an interacting fluid is its ability to carry itself as a superfluid. Here, we report a direct experimental detection of the transition to superfluidity in the flow of a fluid of light past an obstacle in a bulk nonlinear crystal. In this cavityless all-optical system, we extract a direct optical analog of the drag force exerted by the fluid of light and measure the associated displacement of the obstacle. Both quantities drop to zero in the superfluid regime characterized by a suppression of long-range radiation from the obstacle. The experimental capability to shape both the flow and the potential landscape paves the way for simulation of quantum transport in complex systems.

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The C̆erenkov Effect Revisited: From Swimming Ducks to Zero Modes in Gravitational Analogues

Cited by 32 publications

References 70 publications

Bogoliubov-Cherenkov radiation in an atom laser

Bogoliubov-Cherenkov radiation in an atom laser

Superfluid light in bulk nonlinear media

Superfluid motion and drag-force cancellation in a fluid of light

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