Wave instabilities and unidirectional light flow in a cavity with rotating walls

  title={Wave instabilities and unidirectional light flow in a cavity with rotating walls},
  author={Sylvain Lanneb{\`e}re and M{\'a}rio G. Silveirinha},
  journal={Physical Review A},
The behavior of electromagnetic waves confined to a cylindrical cavity is investigated. When the walls of the cavity are set into relative rotational motion the system may become unstable and a strongly unidirectional and nonreciprocal light flow becomes possible. 

Magnetically activated rotational vacuum friction

We predict the existence of a torque acting on an isotropic neutral nanosphere activated by a static magnetic field when the particle temperature differs from the surrounding vacuum. This phenomenon

Limitations of Nonlinear Electromagnetic Isolators

  • D. E. FernandesM. Silveirinha
  • Physics
    2019 IEEE International Conference on Microwaves, Antennas, Communications and Electronic Systems (COMCAS)
  • 2019
Here we show that nonlinear platforms may operate in a regime where they behave as a nearly ideal electromagnetic diode, such that the individual excitations of the two ports lead to strongly

Rest Frame Interference in Rotating Structures and Metamaterials.

Unlike the classical Sagnac effect, here the maxima bending increases when n decreases, suggesting that ε-near-zero metamaterials can enhance optical gyroscopes and rotation-induced nonreciprocal devices.

Singular Resonance in Fluctuation-Induced Electromagnetic Phenomena at the Rotation of a Nanoparticle near the Surface of a Condensed Medium

It has been shown that the rotation of a spherical nanoparticle with the radius R near the surface of a semi-infinite homogeneous medium can result in singular resonance in fluctuation-induced

Nonreciprocal light propagation induced by a subwavelength spinning cylinder

Nonreciprocal optical devices have broad applications in light manipulations for communications and sensing. Non-magnetic mechanisms of optical nonreciprocity are highly desired for high-frequency

Circular Dichroism in Rotating Particles.

It is revealed that mechanical rotation results in circular dichroism in optically isotropic particles, which show an unexpectedly strong dependence on the particle internal geometry.

Memory effects in scattering from accelerating bodies

Abstract. Interaction of electromagnetic, acoustic, and even gravitational waves with accelerating bodies forms a class of nonstationary time-variant processes. Scattered waves contain intrinsic

Asymmetric Transmission and Isolation in Nonlinear Devices: Why They Are Different

Here, we highlight the fundamental differences between nonlinear two-port devices with strongly asymmetric transmission responses and “isolators.” We use a mushroom structure loaded with nonlinear

Photonics of time-varying media

Abstract. Time-varying media have recently emerged as a new paradigm for wave manipulation, due to the synergy between the discovery of highly nonlinear materials, such as epsilon-near-zero

Nanoscale transfer of angular momentum mediated by the Casimir torque

Casimir interactions play an important role in the dynamics of nanoscale objects. Here, we investigate the noncontact transfer of angular momentum at the nanoscale through the analysis of the Casimir



Magnetic-free non-reciprocity and isolation based on parametrically modulated coupled-resonator loops

Communication systems require non-reciprocal electromagnetic propagation, which is difficult to realize in circuits. An alternative is demonstrated by modulating the phase of strongly coupled

THz instability by streaming carriers in high mobility solid-state plasmas

It is described how the interaction of streaming electron plasma waves with lattice waves may lead to a highly unstable coupled plasmon-phonon excitation in the THz range, in high mobility

Optical instabilities and spontaneous light emission by polarizable moving matter

One of the most extraordinary manifestations of the coupling of the optical field and matter is the emission of light by charged particles passing through a dielectric medium: the Vavilov-Cherenkov

Spontaneous emission by rotating objects: a scattering approach.

The quantum electrodynamics vacuum in the presence of a body rotating along its axis of symmetry is studied and it is shown that the object spontaneously emits energy if it is lossy and that a rotating body drags along nearby objects while making them spin parallel to its own rotation axis.

Canonical quantization of the electromagnetic field interacting with a moving dielectric medium

The electromagnetic field is canonically quantized in the presence of a linear, dispersive, and dissipative medium that is in uniform motion. Specifically we calculate the change in the normal modes

Casimir forces at the threshold of the Cherenkov effect

We study the Casimir-Lifshitz forces in a strongly nonreciprocal system: a waveguide filled with a medium moving at a relativistic velocity. In such a waveguide the waves propagate dominantly along a

Negative frequencies in wave propagation: A microscopic model

A change in the sign of the frequency of a wave between two inertial reference frames corresponds to a reversal of the phase velocity. Yet from the point of view of the relation

Fiber-Optical Analog of the Event Horizon

This work used ultrashort pulses in microstructured optical fibers to demonstrate the formation of an artificial event horizon in optics and observed a classical optical effect: the blue-shifting of light at a white-hole horizon.