Learning the Fuzzy Phases of Small Photonic Condensates

Rodrigues, João D.; Dhar, Himadri S.; Walker, Benjamin T.; Smith, Jason M.; Oulton, Rupert F.; Mintert, Florian; Nyman, Robert A.

doi:10.48550/arxiv.2006.12298

Cited by 2 publications

(6 citation statements)

References 49 publications

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“…As such, it is important to have an accurate theory of the system based on a fundamentally sound physical model, with clear comparisons to experiments. We have such a model, which successfully predicts and explains many of our experimental observations [9,17,19,20]. We have shared our software for these simulations as an open-source project called PyPBEC (Python P hoton B ose-E instein C ondensation, available at https://github.com/photonbec/PyPBEC).…”

Section: Generalised Simulation Of Light In Multi-mode Resonators Wit...mentioning

confidence: 89%

“…(Right) Experimental data on the occupation of low-lying energy modes in a small photonic system (data re-purposed from Ref. [9]). Beyond a critical pump power, a significant fraction of the total photons condense to the ground state.…”

Section: How Light Reaches Thermal Equilibriummentioning

confidence: 99%

“…1.2.2. Fuzzy phase diagrams for small systems We have subsequently explored the same phase diagram experimentally [9]: see Fig. 2.…”

Section: Breakdown Of Thermal Equilibrium Including Decondensationmentioning

confidence: 99%

“…The dynamics in photon condensation normally happens in 5-500 ps. It is not feasible to quench a pump power between two values that fast, so we use 40-ps pulses to drive dynamics [9]. We then observe the dynamics using single-photon detectors (although operating in a regime of many photons) and time-to-digital conversion electronics which have timing resolution as short as 40 ps.…”

Section: The Dynamics Of Phase Transitionsmentioning

confidence: 99%

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Phase transitions of light in a dye-filled microcavity: observations and simulations

Nyman,

Dhar,

Rodrigues

et al. 2020

Preprint

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Photon thermalisation and condensation in dye-filled microcavities is a growing area of scientific interest, at the intersection of photonics, quantum optics and statistical physics. We give here a short introduction to the topic, together with an explanation of some of our more important recent results. A key result across several projects is that we have a model based on a detailed physical description which has been used to accurately describe experimental observations. We present a new open-source package in Python called PyPBEC which implements this model. The aim is to enable the reader to readily simulate and explore the physics of photon condensates themselves, so this article also includes a working example code which can be downloaded from the GitHub repository.

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Section: Generalised Simulation Of Light In Multi-mode Resonators Wit...mentioning

confidence: 89%

Section: How Light Reaches Thermal Equilibriummentioning

confidence: 99%

“…1.2.2. Fuzzy phase diagrams for small systems We have subsequently explored the same phase diagram experimentally [9]: see Fig. 2.…”

Section: Breakdown Of Thermal Equilibrium Including Decondensationmentioning

confidence: 99%

Section: The Dynamics Of Phase Transitionsmentioning

confidence: 99%

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Phase transitions of light in a dye-filled microcavity: observations and simulations

Nyman,

Dhar,

Rodrigues

et al. 2020

Preprint

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“…Recent experiments using dye-filled microcavities have demonstrated exciting new physics in both these regimes. For instance, exploiting thermalization to create spatially bifurcated coherent quantum states [39], or the study of photon statistics and formation jitter in transient condensation [24], and fuzzy phases of photonic condensates [40].…”

Section: Introductionmentioning

confidence: 99%

Transport and localization of light inside a dye-filled microcavity

Dhar,

Rodrigues,

Walker

et al. 2020

Preprint

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The driven-dissipative nature of light-matter interaction inside a multimode, dye-filled microcavity makes it an ideal system to study nonequilibrium phenomena, such as transport. In this work, we investigate how light is efficiently transported inside such a microcavity, mediated by incoherent absorption and emission processes. In particular, we show that there exist two distinct regimes of transport, viz. conductive and localized, arising from the complex interplay between the thermalizing effect of the dye molecules and the nonequilibrium influence of driving and loss. The propagation of light in the conductive regime occurs when several localized cavity modes undergo dynamical phase transitions to a condensed, or lasing, state. Further, we observe that while such transport is robust for weak disorder in the cavity potential, strong disorder can lead to localization of light even under good thermalizing conditions. Importantly, the exhibited transport and localization of light is a manifestation of the nonequilibrium dynamics rather than any coherent interference in the system.

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Learning the Fuzzy Phases of Small Photonic Condensates

Cited by 2 publications

References 49 publications

Phase transitions of light in a dye-filled microcavity: observations and simulations

Phase transitions of light in a dye-filled microcavity: observations and simulations

Transport and localization of light inside a dye-filled microcavity

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