Quantum Antireflection Temporal Coatings: Quantum State Frequency Shifting and Inhibited Thermal Noise Amplification

Liberal, Iñigo; Vázquez‐Lozano, J. Enrique; Pacheco‐Peña, Víctor

doi:10.1002/lpor.202200720

Cited by 4 publications

(1 citation statement)

References 45 publications

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“…Therefore, there is no net motion of matter and only the perturbation (interface) moves. This system breaks the velocity limitation and can be both subluminal and superluminal, with the limiting case, where v → ∞, corresponding to the pure-time modulation-interface system [17], [18], [21], [23], [24], [30], [31], [33]- [35]. Figure 1(c) shows a movingperturbation periodic structure (P system).…”

Section: Introductionmentioning

confidence: 99%

Generalized total internal reflection at dynamic interfaces

Bahrami

et al. 2023

Phys. Rev. B

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Space-time modulation systems have garnered significant attention due to their resemblance to moving-matter systems and promising applications. Unlike conventional movingmatter systems, modulation systems do not involve net motion of matter, and are therefore easier to implement and not restricted to subluminal velocities. However, canonical wavemedium interaction aspects, such as scattering and energymomentum relations, have remained largely unexplored. In this paper, we address the aforementioned issues for three dynamic systems: moving-matter blocs, moving-perturbation interfaces and moving-perturbation periodic structures, and provide corresponding general formulations along with comparisons. Our investigation reveals the significant roles played by the "catchup" effect between waves and interfaces. Even more interestingly, it reveals different energy and momentum exchanges between moving media and homogenized moving-perturbation structures as a result of conventional and reverse Fresnel-Fizeau drag effects.

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Section: Introductionmentioning

confidence: 99%

Generalized total internal reflection at dynamic interfaces

Bahrami

et al. 2023

Phys. Rev. B

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Time reflection of light from a quantum perspective and vacuum entanglement

Svidzinsky

2024

Opt. Express

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If a boundary between two static media is moving with a constant superluminal velocity, or there is a sudden change of the refractive index with time, this yields generation of entangled pairs of photons out of vacuum propagating in the opposite directions. Here we show that during this process, entanglement of Minkowski vacuum is transferred to the entanglement of the generated photon pairs. If initially an electromagnetic pulse is present in the medium the photon generation is stimulated into the pulse mode, and since photons are created as entangled pairs the counter-propagating photon partners produce a pulse moving in the opposite direction, which is known as time reflection. Thus, time reflection occurs due to stimulated generation of the entangled photon pairs out of entangled vacuum and no photons in the original pulse are in fact being reflected. This is different from the mechanism of light reflection from spatial inhomogeneities for which no photons are generated.

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Spatiotemporal cascading of dielectric waveguides [Invited]

Pacheco-Peña,

Engheta

2024

Opt. Mater. Express

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Photonic time interfaces, as the temporal analogue of spatial interfaces between two media, consist of a rapid change of the electromagnetic properties of a material (such as permittivity, ε, and permeability, μ) while the wave is present in the material. Here we exploit cascading of such time interfaces in spatially cascaded guided-wave structures such as slab waveguides and ring resonators by considering that the relative permittivity of the cladding of dielectric waveguides is rapidly changed at different moments of time from εclad_1 to εclad_2, while the material of the core remains unchanged in time. It is shown how such time-dependent cladding can enable frequency conversion within the space-time dielectric ring resonator and slab waveguides due to an induced modification of the effective refractive index of the mode propagating within such photonic device. Cascaded frequency conversion is achieved in such cascaded space-time dielectric waveguides and ring resonators, showing how the combination of space and time interfaces can offer further opportunities for manipulation of light-matter interaction using four-dimensional (4D) photonic structures.

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Quantum Antireflection Temporal Coatings: Quantum State Frequency Shifting and Inhibited Thermal Noise Amplification

Cited by 4 publications

References 45 publications

Generalized total internal reflection at dynamic interfaces

Generalized total internal reflection at dynamic interfaces

Time reflection of light from a quantum perspective and vacuum entanglement

Spatiotemporal cascading of dielectric waveguides [Invited]

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