Experimental evidence of analogue Hawking radiation from ultrashort laser pulse filaments

Rubino, E.; Belgiorno, F.; Cacciatori, Sergio L.; Clerici, Matteo; Gorini, Vittorio; Ortenzi, Giovanni; Rizzi, Luca; Sala, V. G.; Kolesík, M.; Faccio, Daniele

doi:10.1088/1367-2630/13/8/085005

Cited by 66 publications

(99 citation statements)

References 44 publications

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“…For a realistic value of I ≈ 3 × 10 12 W/cm 2 , δn ≈ 0.001 [7,8]. Consequently, the velocity of propagation v in of the probe field inside the pulse is smaller than outside (v out ).…”

Section: Mode Analysis In One-dimensional Mediamentioning

confidence: 98%

“…In fact, the first claim of analogue Hawking radiation in a laboratory has been recently reported in [7,8], where the analogue horizons are created by sending a strong laser pulse through a nonlinear dielectric medium with an appropriate velocity. The claimed observation of optical Hawking radiation was obtained by looking perpendicularly to the direction of propagation of the pulse, so to eliminate other spurious effect.…”

Section: Introductionmentioning

confidence: 99%

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Kinematic study of the effect of dispersion in quantum vacuum emission from strong laser pulses

Finazzi

Carusotto

2012

Eur. Phys. J. Plus

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Abstract. A strong light pulse propagating in a nonlinear medium causes an effective change in the local refractive index. With a suitable tuning of the pulse velocity, the leading and trailing edge of the pulse were predicted to behave as analogue black and white horizons in the limit of a dispersionless medium. In this paper, we study a more realistic situation where the frequency dispersion of the medium is fully taken into account. As soon as positive frequency modes with negative norm are present in the comoving frame, spontaneous emission of quantum vacuum radiation is expected to arise independently of the presence of horizons. We finally investigate the kinematic constraints put on the emission and we show that the optimal directions to observe Hawking-like emission form a narrow angle with the direction of propagation of the pulse.PACS. 04.62.+v Quantum fields in curved spacetime -42.65.-k Nonlinear optics

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Section: Mode Analysis In One-dimensional Mediamentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Kinematic study of the effect of dispersion in quantum vacuum emission from strong laser pulses

Finazzi

Carusotto

2012

Eur. Phys. J. Plus

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show abstract

“…systems displaying the same kinematics which is at the root of the Hawking effect [1][2][3][4]. A possible implementation of the analogue Hawking effect as a quantum effect in dielectric media has been presented and analysed in [5], [6], [7] and further developed in [8]. Improvement of such theoretical analysis required to look for a more fundamental model, able to maintain the main aspects of the phenomenology of the system, and still providing a good mathematical model.…”

Section: Introductionmentioning

confidence: 99%

Exact quantisation of the relativistic Hopfield model

et al. 2016

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Abstract. We investigate the quantisation in the Heisenberg representation of a relativistically covariant version of the Hopfield model for dielectric media, which entails the interaction of the quantum electromagnetic field with the matter dipole fields. The matter fields are represented by a mesoscopic polarization field. A full quantisation of the model is provided in a covariant gauge, with the aim of maintaining explicit relativistic covariance. Breaking of the Lorentz invariance due to the intrinsic presence in the model of a preferred reference frame is also taken into account. Relativistic covariance forces us to deal with the unphysical (scalar and longitudinal) components of the fields, furthermore it introduces, in a more tricky form, the well-known dipole ghost of standard QED in a covariant gauge. In order to correctly dispose of this contribution, we implement a generalized Lautrup trick. Furthermore, causality and the relation of the model with the Wightman axioms are also discussed.

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“…is relevant in the discussion of the analogue of the Hawking effect (for the optical case, see e.g. [23][24][25][26][27]), where passing to the reference frame which is comoving with the uniformly travelling perturbation is of basic relevance in order to understand several theoretical questions [30]. Constrained quantization is as well an important topic for understanding the role of constraints on the quantization of the model at hand.…”

Section: The Hopfield Modelmentioning

confidence: 99%

Perturbative photon production in a dispersive medium

2014

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We investigate photon pair-creation in a dispersive dielectric medium induced by the presence of a spacetime varying dielectric constant. Our aim is to examine the possibility to observe new phenomena of pair creation induced by travelling dielectric perturbations e.g. created by laser pulses by means of the Kerr effect. In this perspective, we adopt a semi-phenomenological version of the Hopfield model in which a space-time dependent dielectric susceptibility appears. We focus our attention on perturbation theory, and provide general formulas for the photon production induced by a local but arbitrarily spacetime dependent refractive index perturbation. As an example, we further explore the case of an uniformly travelling perturbation, and provide examples of purely time-dependent perturbations.

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Experimental evidence of analogue Hawking radiation from ultrashort laser pulse filaments

Cited by 66 publications

References 44 publications

Kinematic study of the effect of dispersion in quantum vacuum emission from strong laser pulses

Kinematic study of the effect of dispersion in quantum vacuum emission from strong laser pulses

Exact quantisation of the relativistic Hopfield model

Perturbative photon production in a dispersive medium

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