Photon control and coherent interactions via lattice dark states in atomic arrays

Rubies-Bigordà, Oriol; Walther, Valentin; L., Patti, Taylor; Yelin, Susanne F.

doi:10.1103/physrevresearch.4.013110

Cited by 32 publications

(12 citation statements)

References 73 publications

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“…In addition, they exhibit correlated spontaneous emission and support super-and subradiant collective modes, which can be exploited to control the interaction with impinging light. Possible applications range from the design of highly reflective quantum metasurfaces [5][6][7] to the engineering of platforms showing robust transport of excitation in topological quantum optics [8,9] and of high-fidelity photon storage devices for quantum information processing [10][11][12]. Moreover, quantum emitter rings have been proposed to act as coherent light sources on the nanoscale [13].…”

Section: Introductionmentioning

confidence: 99%

Cooperative subwavelength molecular quantum emitter arrays

Holzinger,

Oh,

Reitz

et al. 2022

Preprint

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Dipole-coupled subwavelength quantum emitter arrays respond cooperatively to external light fields as they may host collective delocalized excitations (a form of excitons) with super-or subradiant character. Deeply subwavelength separations typically occur in molecular ensembles, where in addition to photon-electron interactions, electron-vibron couplings and vibrational relaxation processes play an important role. We provide analytical and numerical results on the modification of super-and subradiance in molecular rings of dipoles including excitations of the vibrational degrees of freedom. While vibrations are typically considered detrimental to coherent dynamics, we show that molecular dimers or rings can be operated as platforms for the preparation of long-lived dark superposition states aided by vibrational relaxation. In closed ring configurations, we extend previous predictions for the generation of coherent light from ideal quantum emitters to molecular emitters, quantifying the role of vibronic coupling onto the output intensity and coherence.

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Section: Introductionmentioning

confidence: 99%

Cooperative subwavelength molecular quantum emitter arrays

Holzinger,

Oh,

Reitz

et al. 2022

Preprint

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“…These cooperative effects have been experimentally observed in various physical platforms, ranging from dense disordered atomic systems [5][6][7][8][9][10][11][12] and ensembles of atoms in a cavity [13][14][15] to condensed matter systems such as two-dimensional materials [16] and quantum dots [17,18]. While superradiance has been extensively studied due to its applications in laser techniques [19,20] and the generation of spin-squeezing and entanglement [21][22][23][24][25], subradiant atomic modes offer promising avenues for sensing [26,27], metrology [28] and light storage and retrieval [29,30].…”

Section: Introductionmentioning

confidence: 99%

Superradiance and subradiance in a gas of two-level atoms

Ma¹,

Rubies-Bigordà²,

Yelin³

2022

Preprint

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Cooperative effects describe atomic ensembles with exchange of photonic excitations, such as dipole-dipole interactions. As a particular example, superradiance arises from spontaneous emission when this exchange leads to constructive interference of the emitted photons. Here, we introduce an integrated method for studying cooperative radiation in many-body systems. This method, which allows to study extended systems with arbitrarily large number of particles, can be formulated by an effective, nonlinear, two-atom master equation that describes the dynamics using a closed form which treats single-and many-body terms on an equal footing. We apply this method to a homogeneous gas of initially inverted two-level atoms, and demonstrate the appearance of both superradiance and subradiance, identifying a many-body coherence term as the source of these cooperative effects. We describe the many-body induced broadening -which is analytically found to scale with the optical depth of the system -and light shifts, and distinguish spontaneous effects from induced ones. In addition, we theoretically predict the time-dependence of subradiance, and the phase change of the radiated field during the cooperative decay.

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“…Meanwhile, atoms trapped in a periodic subwavelength planar optical lattice have been shown in experiments to exhibit collective, spatially delocalized subradiant optical excitations [12], and related experiments on collective excitations have also been performed in other periodic structures [13,14]. Cooperatively responding optical systems of subwavelength atomic arrays have inspired a large body of theoretical studies, with examples including manipulation of subradiance [15][16][17][18], single-photon storage [19][20][21], atom and excitation statistics [22,23], optical cavity-like phenomena [24][25][26], collective antibunching [27][28][29], connected arrays [30], optomechanics [31], and parity-time symmetry breaking [32]. In particular, it was recently shown how a bilayer array of atoms could form a Huygens' surface via emerging collective excitations that mimic an array of crossed electric and magnetic dipoles, even when the atoms only undergo electric dipole transitions [33,34].…”

Section: Introductionmentioning

confidence: 99%

Optical magnetism and wavefront control by arrays of strontium atoms

Ballantine¹,

Wilkowski²,

Ruostekoski³

2022

Preprint

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By analyzing the parameters of electronic transitions, we show how bosonic Sr atoms in planar optical lattices can be engineered to exhibit optical magnetism and other higher-order electromagnetic multipoles that can be harnessed for wavefront control of incident light. Resonant λ 2.6µm light for the 3 D1 → 3 P0 transition mediates cooperative interactions between the atoms while the atoms are trapped in a deeply subwavelength optical lattice. The atoms then exhibit collective excitation eigenmodes, e.g., with a strong cooperative magnetic response at optical frequencies, despite individual atoms having negligible coupling to the magnetic component of light. We provide a detailed scheme to utilize excitations of such cooperative modes consisting of arrays of electromagnetic multipoles to form an atomic Huygens' surface, with complete 2π phase control of transmitted light and almost no reflection, allowing nearly arbitrary wavefront shaping. In the numerical examples, this is achieved by controlling the atomic level shifts of Sr with off-resonant 3 P J → 3 D1 transitions, which results in a simultaneous excitation of arrays of electric dipoles and electric quadrupoles or magnetic dipoles. We demonstrate the wavefront engineering for a Sr array by realizing the steering of an incident beam and generation of a baby-Skyrmion texture in the transmitted light via a topologically nontrivial transition of a Gaussian beam to a Poincaré beam, which contains all possible polarizations in a single cross-section.

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Photon control and coherent interactions via lattice dark states in atomic arrays

Cited by 32 publications

References 73 publications

Cooperative subwavelength molecular quantum emitter arrays

Cooperative subwavelength molecular quantum emitter arrays

Superradiance and subradiance in a gas of two-level atoms

Optical magnetism and wavefront control by arrays of strontium atoms

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