High-sensitivity real-splitting anti-PT-symmetric microscale optical gyroscope

Carlo, Martino De; Leonardis, Francesco De; Lamberti, Luciano; Passaro, Vittorio M. N.

doi:10.1364/ol.44.003956

Cited by 49 publications

(34 citation statements)

References 19 publications

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“…PT-symmetric [50] and anti-PT-symmetric [51] optical gyroscopes were proposed on the basis of ring resonators coupled to a waveguide. Frequency splitting and, hence, sensitivity in gyroscopes are normally limited by the ring dimensions.…”

Section: Microresonatorsmentioning

confidence: 99%

Purcell effect in PT-symmetric waveguides

Karabchevsky¹,

Novitsky²,

Morozko³

2021

Preprint

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This chapter overviews the principles of the spontaneous emission rate increase, that is the Purcell effect, in relation to the photonic parity-time (PT) symmetry. Being focused on the system of coupled PT-symmetric optical waveguides, we consider behaviors of the Purcell factor in PT-symmetric and broken-PT-symmetric regimes. Surprisingly, exceptional points in a coupled waveguide do not influence on the Purcell factor.

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Section: Microresonatorsmentioning

confidence: 99%

Purcell effect in PT-symmetric waveguides

Karabchevsky¹,

Novitsky²,

Morozko³

2021

Preprint

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“…Recently, non-Hermitian systems have gained interest in the field of integrated optical gyroscopes. In particular, the sensitivity enhancement of an optical gyroscope working near an exceptional point has been studied in both parity-time [34] and anti-parity-time [35] symmetric microscale optical gyroscopes. The enhanced Sagnac resonance splitting between two counterpropagating modes has been shown to be independent of the dimensions of the device, leading to the possibility of realizing integrated optical gyroscopes with increased sensitivity with respect to classical Sagnac ones.…”

Section: Quantum Photonics For Rotation Sensingmentioning

confidence: 99%

On-Chip Group-IV Heisenberg-Limited Sagnac Interferometric Gyroscope at Room Temperature

Leonardis

Soref

Carlo

et al. 2020

Sensors

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A room-temperature strip-guided “manufacturable” Silicon-on-Insulator (SOI)/GeSn integrated-photonics quantum-gyroscope chip operating at 1550 nm is proposed and analysed. We demonstrate how the entangled photons generated in Si Spontaneous Four Wave Mixing (SFWM) can be used to improve the resolution of a Sagnac interferometric gyroscope. We propose different integrated architectures based on degenerate and non-degenerate SFWM. The chip comprises several beam splitters, two SFWM entangled photon sources, a pump filter, integrated Mach–Zehnder interferometric gyro, and an array of waveguide coupled GeSn/Ge/Si single-photon avalanche detectors. The laser pumped SWFM sources generate the signal-idler pairs, which, in turn, are used to measure the two-photon, four-photon, and higher order coincidences, resulting in an increasing of the gyro resolution by a factor of two and four, with respect to the classical approach.

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“…The PT-symmetric ring laser gyroscope was first investigated, when the gyroscope is tailored at EPs the scale factor of the rotation sensitivity is 8 orders of magnitude enhancement than conventional Sagnac effect in theory. Subsequently, APT-symmetric gyroscope structure was designed, and the findings exhibit an entire real frequency splitting at the transmission spectrum with the rotation [19]. The experiment version of non-Hermitian optical gyroscope has been successfully built by wang et.al, through making the Brillouin laser gyroscope near the EPs, they investigated the predicted EPs-enhanced Sagnac effect and observed a fourfold enhancement in the Sagnac scale factor [20].…”

Section: Introductionmentioning

confidence: 99%