Dispersive and dissipative coupling of photon Bose-Einstein condensates

Abstract

The synchronization of coherent states of light has long been an important subject of basic research and technology. Recently, a new concept for analog computers has emerged where this synchronization process can be exploited to solve computationally hard problems - potentially faster and more energy-efficient than what can be achieved with conventional computer technology today. The unit cell of such systems consists of two coherent centers that are coupled to one another in a controlled manner. Here, we experimentally characterize and analyze the synchronization process of two photon Bose-Einstein condensates, which are coupled to one another, either dispersively or dissipatively. We show that both types of coupling are robust against a detuning of the condensate frequencies and show similar time constants in establishing mutual coherence. Significant differences between these couplings arise in the behaviour of the condensate populations under imbalanced optical pumping. The combination of these two types of coupling extends the class of physical models that can be investigated using analog simulations.

Resonance fluorescence of two asymmetrically pumped and coupled two-level systems

“…optomechanical platforms [76], with hybridized magnonphoton modes in cavities [77,78], by exploiting photon Bose-Einstein condensates [79], and even with thermoacoustic oscillators [80].…”

Mirror Surface Nanostructuring via Laser Direct Writing -- Characterization and Physical Origins

“…The latter may occur when cavity losses are low enough to allow the photons to thermalize to the dye temperature [9]. Experiments with photon BECs in arbitrary potential landscapes realized in this manner provide insights into the condensation process in open quantum systems [10], coupling of photon BECs [11][12][13], and compressibility [14]. A major future application may be spin glass simulation, allowing the system to be used as a computing platform.…”

Mirror Surface Nanostructuring via Laser Direct Writing—Characterization and Physical Origins

“…

advances to this method, perform timeresolved measurements of the process, and analyze its physical origins.Thanks to this novel nanostructuring method, open-access optical microcavities have become a very flexible platform for experiments with two-dimensional photon gases, in particular, for the study of lasing phenomena and photon Bose-Einstein condensation (BEC). [8][9][10][11][12][13] A major future application of such systems may be spin glass simulation, allowing the system to be used as a computing platform. [14] Furthermore, the study of polaritonic quantum gases based on open cavities [15,16] may benefit from this method.

…”