Demonstration of a State-Insensitive, Compensated Nanofiber Trap

Goban, Akihisa; Choi, K. S.; Alton, D. J.; Ding, D.; Lacroûte, Clément; Pototschnig, M.; Thiele, Tobias; Stern, Nathaniel P.; Kimble, H. J.

doi:10.1103/physrevlett.109.033603

Cited by 345 publications

(427 citation statements)

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“…The corresponding single-atom reflectivity is |r 1 |C0.24, representing an optical attenuation for one atom greater than 40% 12,41 . For comparison, atoms trapped near the surface of a fused silica nanofiber exhibit G 1D C(0.04 ± 0.01)G 0 (refs [27][28][29], comparable with observations with atoms and molecules with strongly focused light 45,46 . By comparing with numerical simulations, our measurements suggest that atoms are guided to unit cells of the PCW by optical dipole forces.…”

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confidence: 51%

“…The measured coupling rate G 1D (quoted absent Purcell enhancement and inhibition due to an external cavity) is unprecedented in all current atom-photon interfaces, whether for atoms trapped near a nanofiber [27][28][29] , one atom in free space 45 , or a single molecule on a surface 46 . For example, in ref.…”

Section: Discussionmentioning

confidence: 99%

“…Bringing these scientific possibilities to fruition requires creation of an interdisciplinary 'toolkit' from atomic physics, quantum optics and nanophotonics for the control, manipulation and interaction of atoms and photons with a complexity and scalability not currently possible. Important initial advances to integrate atomic systems and photonics have been made within the setting of cavity quantum electrodynamics with atom-photon interactions enhanced in micro-and nanoscopic optical cavities [20][21][22][23][24][25][26] and waveguides [27][28][29] . At a minimum, the further migration to photonic crystal structures should allow the relevant parameters associated with these paradigms to be pushed to their limits 26 and greatly facilitate scaling.…”

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Atom–light interactions in photonic crystals

et al. 2014

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The integration of nanophotonics and atomic physics has been a long-sought goal that would open new frontiers for optical physics, including novel quantum transport and many-body phenomena with photon-mediated atomic interactions. Reaching this goal requires surmounting diverse challenges in nanofabrication and atomic manipulation. Here we report the development of a novel integrated optical circuit with a photonic crystal capable of both localizing and interfacing atoms with guided photons. Optical bands of a photonic crystal waveguide are aligned with selected atomic transitions. From reflection spectra measured with average atom number N ¼ 1:1 AE 0:4, we infer that atoms are localized within the waveguide by optical dipole forces. The fraction of single-atom radiative decay into the waveguide is G 1D /G 0 C(0.32 ± 0.08), where G 1D is the rate of emission into the guided mode and G 0 is the decay rate into all other channels. G 1D /G 0 is unprecedented in all current atom-photon interfaces.

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confidence: 51%

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confidence: 99%

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Atom–light interactions in photonic crystals

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“…The experimental progress in coupling of ultracold atomic gases to nanophotonic waveguides, initiated by Refs. [95][96][97], is very rapid (cf. [98]).…”

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confidence: 99%

Nonlocality in many-body quantum systems detected with two-body correlators

et al. 2015

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Contemporary understanding of correlations in quantum many-body systems and in quantum phase transitions is based to a large extent on the recent intensive studies of entanglement in many-body systems. In contrast, much less is known about the role of quantum nonlocality in these systems, mostly because the available multipartite Bell inequalities involve high-order correlations among many particles, which are hard to access theoretically, and even harder experimentally. Standard, "theorist-and experimentalist-friendly" many-body observables involve correlations among only few (one, two, rarely three...) particles. Typically, there is no multipartite Bell inequality for this scenario based on such low-order correlations. Recently, however, we have succeeded in constructing multipartite Bell inequalities that involve two-and one-body correlations only, and showed how they revealed the nonlocality in many-body systems relevant for nuclear and atomic physics [Science 344, 1256[Science 344, (2014. With the present contribution we continue our work on this problem. On the one hand, we present a detailed derivation of the above Bell inequalities, pertaining to permutation symmetry among the involved parties. On the other hand, we present a couple of new results concerning such Bell inequalities. First, we characterize their tightness. We then discuss maximal quantum violations of these inequalities in the general case, and their scaling with the number of parties. Moreover, we provide new classes of two-body Bell inequalities which reveal nonlocality of the Dicke states-ground states of physically relevant and experimentally realizable Hamiltonians. Finally, we shortly discuss various scenarios for nonlocality detection in mesoscopic systems of trapped ions or atoms, and by atoms trapped in the vicinity of designed nanostructures.

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“…In the microwave regime, the coupling of superconducting qubits to a one-dimensional transmission line provides a versatile platform to study such photon-mediated interactions [2]. At optical frequencies, recent experimental advances include the development of 1D nanoscale dielectric waveguides coupled to cold atoms trapped in the vicinity [7][8][9]. In these experiments, tight transverse confinement of the electric field achieves an effective mode area comparable to the atomic cross section and thereby a strong atom-photon interaction in a single-pass configuration [10].…”

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Large Bragg Reflection from One-Dimensional Chains of Trapped Atoms Near a Nanoscale Waveguide

et al. 2016

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We report experimental observations of a large Bragg reflection from arrays of cold atoms trapped near a one-dimensional nanoscale waveguide. By using an optical lattice in the evanescent field surrounding a nanofiber with a period nearly commensurate with the resonant wavelength, we observe a reflectance of up to 75% for the guided mode. Each atom behaves as a partially reflecting mirror and an ordered chain of about 2000 atoms is sufficient to realize an efficient Bragg mirror. Measurements of the reflection spectra as a function of the lattice period and the probe polarization are reported. The latter shows the effect of the chiral character of nanoscale waveguides on this reflection. The ability to control photon transport in 1D waveguides coupled to spin systems would enable novel quantum network capabilities and the study of many-body effects emerging from long-range interactions. DOI: 10.1103/PhysRevLett.117.133603 In recent years, the coupling of one-dimensional bosonic waveguides and atoms, either real or artificial, has raised a large interest [1][2][3]. Beyond the remarkable ability to couple a single emitter to a guided mode [3], the 1D reservoir would also enable the exploration and eventual engineering of photon-mediated long-range interactions between multiple qubits, a challenging prospect in free-space geometries. This emerging field of waveguide quantum electrodynamics promises unique applications to quantum networks, quantum nonlinear optics, and quantum simulation [4][5][6].In this context, progress has been reported on various fronts. In the microwave regime, the coupling of superconducting qubits to a one-dimensional transmission line provides a versatile platform to study such photon-mediated interactions [2]. At optical frequencies, recent experimental advances include the development of 1D nanoscale dielectric waveguides coupled to cold atoms trapped in the vicinity [7][8][9]. In these experiments, tight transverse confinement of the electric field achieves an effective mode area comparable to the atomic cross section and thereby a strong atom-photon interaction in a single-pass configuration [10].Coupling of atom arrays to 1D waveguides could lead to a variety of remarkable cooperative phenomena. This coupling can strongly modify the photon transport properties [11][12][13], resulting for instance in sub-and superradiant decays as recently observed for two coupled atoms [14]. It can also lead to photonic band gaps and provide atomic Bragg mirrors, with envisioned applications to integrated cavity QED [15][16][17]. This setting is as well at the basis of a recently proposed deterministic state engineering protocol [18] and constitutes the building block of chiral spin networks in which the emission into the left-and rightpropagating modes is asymmetric [19]. Moreover, strong optomechanical couplings resulting from photon-mediated forces can give rise to rich spatial atomic configurations, including self-organization [20,21].Optical nanofibers offer a promising platform for exploring t...

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Demonstration of a State-Insensitive, Compensated Nanofiber Trap

Cited by 345 publications

References 76 publications

Atom–light interactions in photonic crystals

Atom–light interactions in photonic crystals

Nonlocality in many-body quantum systems detected with two-body correlators

Large Bragg Reflection from One-Dimensional Chains of Trapped Atoms Near a Nanoscale Waveguide

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