An integrated diamond nanophotonics platform for quantum-optical networks

Sipahigil, Alp; Evans, Ruffin E.; Sukachev, Denis D.; Burek, Michael J.; Borregaard, Johannes; Bhaskar, Mihir K.; Nguyen, Christian T.; Pacheco, Jose L; Atikian, Haig A.; Meuwly, Charles; Camacho, Ryan M.; Jelezko, Fedor; Bielejec, Edward S.; Park, Hongkun; Lončar, Marko; Lukin, Mikhail D.

doi:10.1126/science.aah6875

Cited by 726 publications

(686 citation statements)

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“…These systems were among the first to be considered for quantum information, and continue to be an active area of research, [269] with new developments emerging, including the possibility of incorporating these centers into diamond devices where a gate bias controls the charge state of the center and affects its quantum characteristics. [115,270] Note that here the challenges are very different from those mentioned in Section 2.5. There, the purpose of doping or defect incorporation is to create free carriers, and the depth of the defect levels in the UWBG semiconductors makes this challenging.…”

Section: Host For Quantum Statesmentioning

confidence: 98%

Ultrawide‐Bandgap Semiconductors: Research Opportunities and Challenges

Tsao

Chowdhury

Hollis

et al. 2017

Adv Elect Materials

1,051

463

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Section: Host For Quantum Statesmentioning

confidence: 98%

Ultrawide‐Bandgap Semiconductors: Research Opportunities and Challenges

Tsao

Chowdhury

Hollis

et al. 2017

Adv Elect Materials

1,051

463

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“…The main experimental challenge is to ensure near-unity lattice filling [52] and near-uniform excitation of atoms to the 3 P 0 state. Other approaches to deep subwavelength atomic lattices include utilizing vacuum forces in the proximity of dielectrics [53], using adiabatic potentials [54], dynamic modulation of optical lattices [55], or subwavelength positioning of atomlike color defects in diamond nanophotonic devices [56][57][58][59] [60].…”

Section: Prl 119 023603 (2017) P H Y S I C a L R E V I E W L E T T Ementioning

confidence: 99%

Topological Quantum Optics in Two-Dimensional Atomic Arrays

et al. 2017

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We demonstrate that two-dimensional atomic emitter arrays with subwavelength spacing constitute topologically protected quantum optical systems where the photon propagation is robust against large imperfections while losses associated with free space emission are strongly suppressed. Breaking timereversal symmetry with a magnetic field results in gapped photonic bands with nontrivial Chern numbers and topologically protected, long-lived edge states. Due to the inherent nonlinearity of constituent emitters, such systems provide a platform for exploring quantum optical analogs of interacting topological systems. DOI: 10.1103/PhysRevLett.119.023603 Charged particles in two-dimensional systems exhibit exotic macroscopic behavior in the presence of magnetic fields and interactions. These include the integer [1], fractional [2], and spin [3] quantum Hall effects. Such systems support topologically protected edge states [4,5] that are robust against defects and disorder. There is a significant interest in realizing topologically protected photonic systems. Photonic analogs of quantum Hall behavior have been studied in gyromagnetic photonic crystals [6][7][8][9][10][11], helical waveguides [12], two-dimensional lattices of optical resonators [13][14][15] and in polaritons coupled to optical cavities [16]. An outstanding challenge is to realize optical systems which are robust not only to some specific backscattering processes but to all loss processes, including scattering into unconfined modes and spontaneous emission. Another challenge is to extend these effects into a nonlinear quantum domain with strong interactions between individual excitations. These considerations motivate the search for new approaches to topological photonics.In this Letter, we introduce and analyze a novel platform for engineering topological states in the optical domain. It is based on atomic or atomlike quantum optical systems [17], where time-reversal symmetry can be broken by applying magnetic fields and the constituent emitters are inherently nonlinear. Specifically, we focus on optical excitations in a two-dimensional honeycomb array of closely spaced emitters. We show that such systems maintain topologically protected confined optical modes that are immune to large imperfections as well as to the most common loss processes such as scattering into free-space modes. Such modes can be used to control individual atom emission, and to create quantum nonlinearity at a single photon level.The key idea is illustrated in Fig. 1(a). We envision an array with interatomic spacing a and quantization axisẑ

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“…The current J α flowing through the band α is given by Eqs. (17) and (18). Using the spectral function sum rule dωA α,k,k (ω) = 2πδ k,k , with A α,k,k (ω) = −2 G r α,k,k (ω), we get:…”

Section: Self-consistent Proceduresmentioning

confidence: 99%

“…PACS numbers: 05.60. Gg, 42.50.Pq, 74.40.Gh, The study of strong light-matter interactions [1][2][3][4] is playing an increasingly crucial role in understanding as well as engineering new states of matter with relevance to the fields of quantum optics [5][6][7][8][9][10][11][12][13][14][15][16][17][18], solid state physics [19][20][21][22][23][24][25][26][27][28][29][30][31], as well as quantum chemistry [32][33][34][35][36] and material science [37][38][39][40][41][42][43][44][45][46][47][48][49][...…”

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confidence: 99%

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Cavity-Enhanced Transport of Charge

et al. 2017

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We theoretically investigate charge transport through electronic bands of a mesoscopic onedimensional system, where inter-band transitions are coupled to a confined cavity mode, initially prepared close to its vacuum. This coupling leads to light-matter hybridization where the dressed fermionic bands interact via absorption and emission of dressed cavity-photons. Using a selfconsistent non-equilibrium Green's function method, we compute electronic transmissions and cavity photon spectra and demonstrate how light-matter coupling can lead to an enhancement of charge conductivity in the steady-state. We find that depending on cavity loss rate, electronic bandwidth, and coupling strength, the dynamics involves either an individual or a collective response of Bloch states, and explain how this affects the current enhancement. We show that the charge conductivity enhancement can reach orders of magnitudes under experimentally relevant conditions. PACS numbers: 05.60. Gg, 42.50.Pq, 74.40.Gh, The study of strong light-matter interactions [1][2][3][4] is playing an increasingly crucial role in understanding as well as engineering new states of matter with relevance to the fields of quantum optics [5][6][7][8][9][10][11][12][13][14][15][16][17][18], solid state physics [19][20][21][22][23][24][25][26][27][28][29][30][31], as well as quantum chemistry [32][33][34][35][36] and material science [37][38][39][40][41][42][43][44][45][46][47][48][49][50][51][52][53]. An emerging topic of interest is the modification of material properties using either external electro-magnetic radiation [54][55][56] or spatially confined modes such as in cavity quantum electrodynamics [57][58][59][60][61][62][63]. Recent experiments with organic semiconductors have demonstrated a dramatic enhancement of charge conductivity when molecules interact strongly with a surface plasmon mode [64]. In principle, this can open up exciting new opportunities both for basic science and applications of organic electronics [65]. The microscopic mechanisms leading to charge conductivity enhancement, however, remain today largely unexplained. In this work, we propose a proof-of-principle model that sheds light on the physical mechanisms behind current enhancement due to the interaction with a confined bosonic mode. We show that our model can lead to a dramatic current enhancement by orders of magnitude for certain conditions that can be relevant to typical experiments across fields.The setup we consider [see Fig. 1(a)] consists of a mesoscopic chain of N sites with two orbitals of energy ω 1 and ω 2 ( = 1) in a 1D geometry, forming two bands in a tight-binding picture. The edges of the chain are connected to a source and a drain with a bias voltage across, respectively inserting and removing (spin-less) electrons in the two orbitals at rates Γ 1 and Γ 2 . The on-site interband transitions with energy ω 21 = ω 2 −ω 1 are resonantly coupled to a cavity mode with coupling strength g and loss rate κ. Initially, we only allow electrons in the upper band to hop with a ...

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An integrated diamond nanophotonics platform for quantum-optical networks

Cited by 726 publications

References 49 publications

Ultrawide‐Bandgap Semiconductors: Research Opportunities and Challenges

Ultrawide‐Bandgap Semiconductors: Research Opportunities and Challenges

Topological Quantum Optics in Two-Dimensional Atomic Arrays

Cavity-Enhanced Transport of Charge

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