Broadband and robust optical waveguide devices using coherent tunnelling adiabatic passage

Chung, Kelvin; Karle, Timothy J.; Rab, M.; Greentree, Andrew D.; Tomljenovic‐Hanic, Snjezana

doi:10.1364/oe.20.023108

Cited by 26 publications

(28 citation statements)

References 25 publications

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“…The effect of decay or absorption on SAP processes in systems of three coupled optical waveguides has also been studied in the literature. The adiabatic transfer was shown to break down even for small values of the absorption in the initial or target waveguide [43], while it remains robust against absorption in the central waveguide [45]. D. Beyond three coupled waveguides, long range coupling, and SAP-based applications…”

Section: Non-linearities and Absorptionmentioning

confidence: 99%

Spatial adiabatic passage: a review of recent progress

Menchon-Enrich¹,

Benseny²,

Ahufinger³

et al. 2016

Rep. Prog. Phys.

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Adiabatic techniques are known to allow for engineering quantum states with high fidelity. This requirement is currently of large interest, as applications in quantum information require the preparation and manipulation of quantum states with minimal errors. Here we review recent progress on developing techniques for the preparation of spatial states through adiabatic passage, particularly focusing on three state systems. These techniques can be applied to matter waves in external potentials, such as cold atoms or electrons, and to classical waves in waveguides, such as light or sound. CONTENTS

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Section: Non-linearities and Absorptionmentioning

confidence: 99%

Spatial adiabatic passage: a review of recent progress

Menchon-Enrich¹,

Benseny²,

Ahufinger³

et al. 2016

Rep. Prog. Phys.

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“…The analogy between quantum mechanics and wave optics provides an elegant tool to design optical waveguide arrays and even photonic lattices, as shown in a review by S Longhi [9]. Various adiabatic (three) waveguide coupler devices [10][11][12][13][14][15][16][17][18][19][20], including high-tolerance directional couplers and broadband beam splitters, are proposed based on the optical analogy of a stimulated Raman adiabatic passage (STIRAP) or coherent tunnelling adiabatic passage (CTAP) in quantum optics; see the current review [21,22]. Recently, shortcuts to adiabaticity (STA) have been proposed to speed up adiabatic state evolution in quantum systems [23].…”

Section: Introductionmentioning

confidence: 99%

Compact beam splitters in coupled waveguides using shortcuts to adiabaticity

Chen¹,

Wen²,

Shi³

et al. 2018

J. Opt.

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There are various works on adiabatic (three) waveguide coupler devices but most are focused on the quantum optical analogies and the physics itself. We successfully apply shortcuts to adiabaticity techniques to the coupled waveguide system with a suitable length for integrated optics devices. Especially, the counter-diabatic driving protocol followed by unitary transformation overcomes the previously unrealistic implemention, and is used to design feasible and robust 1×2 and 1×3 beam splitters for symmetric and asymmetric three waveguide couplers. Numerical simulations with the beam propagation method demonstrate that these shortcut designs for beam splitters are shorter than the adiabatic ones, and also have a better tolerance than parallel waveguides resonant beam splitters with respect to spacing errors and wavelength variation.

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“…And the conversion efficiencies are more than 99% for both polarizations, which makes the rotator potential for unitary and reversible gate in quantum information technology. Besides the application value as device, this polarization rotator provides a platform for simulation of coherent quantum STIRAP phenomenon [37,38]. In addition, our study is also an excellent example of photonic device design inspired by quantum physics.…”

Section: Introductionmentioning

confidence: 93%

Integrated polarization rotator/converter by stimulated Raman adiabatic passage

Xiong¹,

Zou²,

Ren³

et al. 2013

Opt. Express

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We proposed a polarization rotator inspired by stimulated Raman adiabatic passage model from quantum optics, which is composed of a signal waveguide and an ancillary waveguide. The two orthogonal modes in signal waveguide and the oblique mode in ancillary waveguide form a Λ-type three-level system. By controlling the width of signal waveguide and the gap between two waveguides, adiabatic conversion between two orthogonal modes can be realized in the signal waveguide. With such adiabatic passage, polarization conversion is completed within 150 μm length, with the efficiencies over 99% for both conversions between horizontal polarization and vertical polarization. In addition, such a polarization rotator is quite robust against fabrication error, allowing a wide range of tolerances for the rotator geometric parameters. Our work is not only significative to photonic simulations of coherent quantum phenomena with engineered photonic waveguides, but also enlightens the practical applications of these phenomena in optical device designs.

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Broadband and robust optical waveguide devices using coherent tunnelling adiabatic passage

Cited by 26 publications

References 25 publications

Spatial adiabatic passage: a review of recent progress

Spatial adiabatic passage: a review of recent progress

Compact beam splitters in coupled waveguides using shortcuts to adiabaticity

Integrated polarization rotator/converter by stimulated Raman adiabatic passage

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