Super-radiance reveals infinite-range dipole interactions through a nanofiber

Solano, Pablo; Barberis-Blostein, Pablo; Fatemi, Fredrik K.; Orozco, L. A.; Rolston, Steven

doi:10.1038/s41467-017-01994-3

Cited by 257 publications

(207 citation statements)

References 43 publications

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“…Recent advances in QE-nanophotonics integration [14][15][16][17][18][19][20][21][22][23][24][25][26] and the possibility of mimicking such QED scenarios in circuit QED [27][28][29][30][31] or cold atoms [32,33] has increased the interest in studying systems where the baths not only have an spectral structure but are also confined to reduced dimensionalities. This interplay between the structure and reduced dimensionality results in qualitatively new physics.…”

Section: Introductionmentioning

confidence: 99%

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Markovian and non-Markovian dynamics of quantum emitters coupled to two-dimensional structured reservoirs

2017

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The interaction of quantum emitters with structured baths modifies both their individual and collective dynamics. In Ref.[1] we show how exotic quantum dynamics emerge when QEs are spectrally tuned around the middle of the band of a two-dimensional structured reservoir, where we predict the failure of perturbative treatments, anisotropic non-markovian interactions and novel super and subradiant behaviour. In this work, we provide further analysis of that situation, together with a complete analysis for the quantum emitter dynamics in spectral regions different from the center of the band.

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Section: Introductionmentioning

confidence: 99%

“…This leads to perfect super/subradiance [23][24][25][26]39], which can be exploited for entanglement generation, self-organization of atoms or multiphoton generation among others [24,36,37,[40][41][42][43][44].…”

Section: Introductionmentioning

confidence: 99%

Markovian and non-Markovian dynamics of quantum emitters coupled to two-dimensional structured reservoirs

2017

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“…One particular aspect is the possibility of realizing chiral emission [15][16][17], which can display very uncommon features [18,19]. Another one is the possibility of exploiting the phenomena of sub and superradiance [11,12,[20][21][22], e.g., to enhance the coupling to the emitter [23], to generate QE entanglement [18,24], to produce non-classical light [25,26], or even to perform quantum computation [27].…”

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confidence: 99%

Quantum Emitters in Two-Dimensional Structured Reservoirs in the Nonperturbative Regime

2017

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We show that the coupling of quantum emitters to a two-dimensional reservoir with a simple band structure gives rise to exotic quantum dynamics with no analogue in other scenarios and which can not be captured by standard perturbative treatments. In particular, for a single quantum emitter with its transition frequency in the middle of the band we predict an exponential relaxation at a rate different from that predicted by the Fermi's Golden rule, followed by overdamped oscillations and slow relaxation decay dynamics. This is accompanied by directional emission into the reservoir. This directionality leads to a modification of the emission rate for few emitters and even perfect subradiance, i.e., suppression of spontaneous emission, for four quantum emitters.The interaction of quantum emitters (QEs) with propagating bosonic particles, e.g., photons, lies at the core of Quantum Optics [1]. This interaction leads, for example, to collective interactions between QEs [2, 3] which can be harnessed for both quantum information and simulation applications. New avenues in the integration of QEs with nanophotonic structures [4][5][6][7][8][9][10][11][12][13][14] provide us with systems in which the QEs interact with low dimensional bosonic modes, with complicated energy dispersions in the case of engineered dielectrics [6][7][8][9][10][11][12]. Despite originally the main motivation of such implementations was to exploit the small sizes to enhance light-matter interactions, it was soon realized that intriguing phenomena arise because of the reduced dimensionality. One particular aspect is the possibility of realizing chiral emission [15][16][17], which can display very uncommon features [18,19]. Another one is the possibility of exploiting the phenomena of sub and superradiance [11,12,[20][21][22], e.g., to enhance the coupling to the emitter [23], to generate QE entanglement [18,24], to produce non-classical light [25,26], or even to perform quantum computation [27].The dynamics of QEs in 1D reservoirs is relatively simple, specially when their transition frequency, ω e , lies within a band. Perturbative treatments predict that a single QE initially excited decays at a rate, Γ, given by the Fermi's Golden Rule (FGR), i.e. proportional to the density of states of the bath at ω e . The emission mostly occurs in the bath modes that are resonant with that frequency. Typically, there are two such modes of associated momentum ±k e , leading to a symmetric left/right emission. When two (or more) QEs are present, the existence of only two such modes leads to super/subradiant states, where the emission is enhanced or suppressed by interference. In higher dimensions for structureless baths, a single QE will also decay at a rate given by the FGR. However, the emission takes place in different directions as there are many resonant modes in the bath. For two QEs, the interference in the emission cannot occur in all those modes at the same time [28] and thus, the phenomena of sub and superradiance are generically absent.In this manus...

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“…By using optical pumping to positionally select the atoms such that their average distance is 30 nm from the ONF surface Solano et al (2017a) reach an efficiency of β ∼0.13. This allows coherent interactions of atomic ensembles mediated by the nanofiber.…”

Section: Onf-mediated Coherent Interactionsmentioning

confidence: 99%

Optical Nanofibers

Solano

Grover

Hoffman

et al. 2017

Advances in Atomic, Molecular, and Optical Physics

100

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The development of optical nanofibers (ONF) and the study and control of their optical properties when coupling atoms to their electromagnetic modes has opened new possibilities for their use in quantum optics and quantum information science. These ONFs offer tight optical mode confinement (less than the wavelength of light) and diffraction-free propagation. The small cross section of the transverse field allows probing of linear and non-linear spectroscopic features of atoms with exquisitely low power. The cooperativity -the figure of merit in many quantum optics and quantum information systems -tends to be large even for a single atom in the mode of an ONF, as it is proportional to the ratio of the atomic cross section to the electromagnetic mode cross section. ONFs offer a natural bus for information and for inter-atomic coupling through the tightly-confined modes, which opens the possibility of one-dimensional many-body physics and interesting quantum interconnection applications. The presence of the ONF modifies the vacuum field, affecting the spontaneous emission rates of atoms in its vicinity. The high gradients in the radial intensity naturally provide the potential for trapping atoms around the ONF, allowing the creation of onedimensional arrays of atoms. The same radial gradient in the transverse direction of the field is responsible for the existence of a large longitudinal component that introduces the possibility of spin-orbit coupling of the light and the atom, enabling the exploration of chiral quantum optics.

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Super-radiance reveals infinite-range dipole interactions through a nanofiber

Cited by 257 publications

References 43 publications

Markovian and non-Markovian dynamics of quantum emitters coupled to two-dimensional structured reservoirs

Markovian and non-Markovian dynamics of quantum emitters coupled to two-dimensional structured reservoirs

Quantum Emitters in Two-Dimensional Structured Reservoirs in the Nonperturbative Regime

Optical Nanofibers

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