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Nonreciprocal and chiral single-photon scattering for giant atoms

Nonreciprocal and chiral single-photon scattering for giant atoms

11:31 26 agosto in Artículos por Website
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Two-level giant atom coupled to a single waveguideAs schematically shown in Fig. 1a, we consider a two-level giant atom coupled to a waveguide at two separated points x = 0 and x = d. The atom-waveguide coupling coefficients are \(g{e}^{i{\theta }_{1}}\) and \(g{e}^{i{\theta }_{2}}\), respectively, with local coupling phases...

Millimetre-scale magnetocardiography of living rats with thoracotomy

11:31 24 agosto in Artículos por Website
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NV diamond sampleThe NV diamond crystal used in this study was prepared by the following procedure. A single-crystal of diamond was synthesised by a temperature-gradient method under high-pressure and high-temperature (HPHT) using a modified belt-type high-pressure apparatus59,60. The crystal was grown on the (100)...

Connecting Hodge and Sakaguchi-Kuramoto through a mathematical framework for coupled oscillators on simplicial complexes

Connecting Hodge and Sakaguchi-Kuramoto through a mathematical framework for coupled oscillators on simplicial complexes

11:31 22 agosto in Artículos por Website
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Simplicial complexes and Hodge LaplacianThe central elements of the mathematical formulation of the Kuramoto model on simplicial complexes are the boundary operators and the related Hodge Laplacians, which are, respectively, generalizations to higher order structures of the graph incidence matrices and of the Laplacian...

Towards phase-stabilized Fourier domain mode-locked frequency combs

11:31 18 agosto in Artículos por Website
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FDML laserThe home-built, temperature-stabilized FDML laser consists of a semiconductor optical amplifier (SOA, BOA 1132 S, Thorlabs), a fibre-based delay line cavity, mostly consisting of HI1060 fibre, and a home-built fibre based tuneable Fabry-Pérot optical bandpass filter (FP). A chirped fibre Bragg grating (CFBG) is...

Non-resonant exceptional points as enablers of noise-resilient sensors

Non-resonant exceptional points as enablers of noise-resilient sensors

11:31 16 agosto in Artículos por Website
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Implementation of SIP platformsUnlike resonant EPDs, which rely on local perturbations done to the EPD-based platform, the proposed sensing platform (see “Methods”) consists of two distinct units—the probing element and the SIP sensing element (see Fig. 1a). The probing element can be any type of...