A cavity-mediated collective quantum effect in sonoluminescing bubbles

Abstract

This paper discusses a collective quantum effect which might play an important role in sonoluminescence experiments. We suggest that it occurs during the final stages of the collapse phase and enhances the heating of the particles inside the bubble.

A Quantum Heat Exchanger for Nanotechnology

“…The above observations suggest many similarities between sonoluminescence and quantum optics experiments with trapped atomic particles [ 29 , 30 ]. When the bubble reaches its minimum radius, an atomic gas becomes very strongly confined [ 31 ].…”

“…In this paper, we point out similarities between quantum optics experiments with strongly confined atomic particles and single bubble sonoluminescence experiments [ 29 , 30 ]. In both situations, interactions are present, which can be used to convert thermal energy very efficiently into light.…”

“…To gain a better understanding of the experimental setup in Figure 1 , Section 4.1 describes the main characteristics of single bubble sonoluminescence experiments [ 32 , 33 , 34 , 35 , 36 ]. Section 4.2 emphasizes that there are many similarities between sonoluminescence and quantum optics experiments [ 29 , 30 ]. From this, we conclude that sonoluminescence experiments naturally provide the main ingredients for the implementation of cavity-mediated collective laser cooling of an atomic gas [ 26 , 27 , 28 ].…”

“…As pointed out in Refs. [ 29 , 30 ], the creation a cavity photons is more likely accompanied by the creation of a phonon than the annihilation of a phonon since …”

“…In this paper, we emphasize that cavitating bubbles can provide all of the above listed requirements for laser cooling, especially a very strong confinement of atomic particles, such as nitrogen [ 29 , 30 ]. For example, calculations based on a variation of the Rayleigh–Plesset equations show that the pressure at the location of a cavitating bubble can be significantly larger than the externally applied driving pressure [ 31 ].…”