A Nanophotonic Structure Containing Living Photosynthetic Bacteria

Coles, David M.; Flatten, Lucas C.; Sydney, Thomas; Hounslow, Emily; Saikin, Semion K.; Aspuru‐Guzik, Alán; Vedral, Vlatko; Tang, Jimmy X.; Taylor, Robert A.; Smith, Jason M.; Lidzey, David G.

doi:10.1002/smll.201701777

Cited by 55 publications

(73 citation statements)

References 50 publications

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“…Strong light–matter interactions have come into the spotlight in recent years, as a means of modifying molecular properties by tuning of their electromagnetic environment. The phenomenon has been demonstrated for organic/inorganic molecules, nanographene, monolayer transition metal dichalcogenides, proteins, chlorosomes, single‐wall carbon nanotubes, single molecules and even within living organisms . Applications of strongly coupled systems so far comprise polariton lasing and superfluidity, efficient second harmonic generation, room temperature Bose–Einstein condensates, conductivity enhancement and quantum information processing .…”

Section: Figurementioning

confidence: 99%

Voltage‐Controlled Switching of Strong Light–Matter Interactions using Liquid Crystals

Hertzog

Rudquist

Hutchison

et al. 2017

Chemistry A European J

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We experimentally demonstrate a fine control over the coupling strength of vibrational light–matter hybrid states by controlling the orientation of a nematic liquid crystal. Through an external voltage, the liquid crystal is seamlessly switched between two orthogonal directions. Using these features, for the first time, we demonstrate electrical switching and increased Rabi splitting through transition dipole moment alignment. The C−Nstr vibration on the liquid crystal molecule is coupled to a cavity mode, and FT‐IR is used to probe the formed vibropolaritonic states. A switching ratio of the Rabi splitting of 1.78 is demonstrated between the parallel and the perpendicular orientation. Furthermore, the orientational order increases the Rabi splitting by 41 % as compared to an isotropic liquid. Finally, by examining the influence of molecular alignment on the Rabi splitting, the scalar product used in theoretical modeling between light and matter in the strong coupling regime is verified.

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Section: Figurementioning

confidence: 99%

Voltage‐Controlled Switching of Strong Light–Matter Interactions using Liquid Crystals

Hertzog

Rudquist

Hutchison

et al. 2017

Chemistry A European J

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“…Each bacterium, which is approximately 2µm×500nm in size, contains 200−250 chlorosomes, each having 200, 000 bacteriochlorophyll c (BChl c) molecules. Such pigment molecules serve as excitons that can be coupled to light [12,30]. The extinction spectrum of the bacteria (BChl c molecules) in water shows two pronounced peaks, at wavelengths λ I = 750nm and λ II = 460nm (see Fig.…”

Section: B Modelmentioning

confidence: 99%

“…A promising step in this direction, demonstrating strong coupling between living bacteria and optical fields and suggesting the existence of entanglement between them [11], has recently been realised [12]. See also Refs.…”

Section: Introductionmentioning

confidence: 99%

“…In order to demonstrate that there should be observable entanglement in the experiment we then propose a plausible model of light-bacteria interactions and noises in the experiment. We focus on the optical response of the bacteria and model their light-sensitive part by a collection of two-level atoms with transition frequencies matching observed bacterial spectrum [12]. All processes responsible for keeping the organisms alive are thus effectively put into the environment of these atoms.…”

Section: Introductionmentioning

confidence: 99%

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Probing quantum features of photosynthetic organisms

et al. 2018

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Recent experiments have demonstrated strong coupling between living bacteria and light. Here we propose a scheme capable of revealing non-classical features of the bacteria (quantum discord of light-bacteria correlations) without exact modelling of the organisms and their interactions with external world. The scheme puts the bacteria in a role of mediators of quantum entanglement between otherwise non-interacting probing light modes. We then propose a plausible model of this experiment, using recently achieved parameters, demonstrating the feasibility of the scheme. Within this model we find that the steady state entanglement between the probes, which does not depend on the initial conditions, is accompanied by entanglement between the probes and bacteria, and provides independent evidence of the strong coupling between them. arXiv:1711.06485v2 [quant-ph]

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“…Possible applications might range from quantum information processing to the modification of chemical reaction landscapes. In these contexts, coherent coupling of single dye molecules [9], ensembles of polymers [10] and even of living bacteria [11] to a cavity have recently been observed.…”

Section: Introductionmentioning

confidence: 99%

Cavity-controlled formation of ultracold molecules

Kampschulte

Denschlag

2018

New J. Phys.

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Ultracold ground-state molecules can be formed from ultracold atoms via photoassociation followed by a spontaneous emission process. Typically, the molecular products are distributed over a range of final states. Here, we propose to use an optical cavity with high cooperativity to selectively enhance the population of a pre-determined final state by controlling the spontaneous emission. During this process, a photon will be emitted into the cavity mode. Detection of this photon heralds a single reaction. We discuss the efficiency and the dynamics of cavity-assisted molecule formation in the frame of realistic parameters that can be achieved in current ultracold-atom setups. In particular, we consider the production of Rb 2 molecules in the a 3 Σ u triplet ground state. Moreover, when working with more than two atoms in the cavity, collective enhancement effects in chemistry should be observable.

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A Nanophotonic Structure Containing Living Photosynthetic Bacteria

Cited by 55 publications

References 50 publications

Voltage‐Controlled Switching of Strong Light–Matter Interactions using Liquid Crystals

Voltage‐Controlled Switching of Strong Light–Matter Interactions using Liquid Crystals

Probing quantum features of photosynthetic organisms

Cavity-controlled formation of ultracold molecules

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