Superluminal ring laser for hypersensitive sensing

Yum, H.; Salit, M.; Yablon, J.; Salit, K.; Wang, Y.; Shahriar, M. S.

doi:10.1364/oe.18.017658

Cited by 93 publications

(65 citation statements)

References 16 publications

(27 reference statements)

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“…We will consider a more explicit model when we take into account the additional QN later. We assume that the NDM has a transmission profile which is given by a narrow band dip on top of a much broader gain [19]. The real and imaginary part of the susceptibility χ ≡ ′ χ + i ′′ χ are as follows:…”

Section: A Cc-sr Designmentioning

confidence: 99%

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Quantum noise limits in white-light-cavity-enhanced gravitational wave detectors

Zhou

Shahriar

2015

Phys. Rev. D

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Previously, we had proposed a gravitational wave detector that incorporates the white light cavity (WLC) effect using a compound cavity for signal recycling (CC-SR).Here, we first use an idealized model for the negative dispersion medium (NDM), and use the so-called Caves model for phase-insensitive linear amplifier to account for the quantum noise (QN) contributed by the NDM, in order to determine the upper bound of the enhancement in the sensitivity-bandwidth product. We calculate the quantum noise limited sensitivity curves for the CC-SR design, and find that the broadening of sensitivity predicted by the classical analysis is also present in these curves, but is somewhat reduced. Furthermore, we find that the curves always stay above the standard quantum limit (SQL). To circumvent this limitation, we modify the dispersion to compensate the non-linear phase variation produced by the opto-mechanical (OM) resonance effects. We find that the upper bound of the factor by which the sensitivitybandwidth product is increased, compared to the highest sensitivity result predicted by Bunanno and Chen [Phys. Rev. D 64, 042006 (2001)], is ~14. We also present a simpler scheme (WLC-SR) where a dispersion medium is inserted in the SR cavity. For this scheme, we found the upper bound of the enhancement factor to be ~18. We then consider an explicit system for realizing the NDM, which makes use of five energy levels in M-configuration to produce Gain, accompanied by Electromagnetically Induced Transparency (the GEIT system). For this explicit system, we employ the rigorous 2 approach based on Master Equation (ME) to compute the QN contributed by the NDM, thus enabling us to determine the enhancement in the sensitivity-bandwidth product definitively rather than the upper bound thereof. Specifically, we identify a set of parameters for which the sensitivity-bandwidth product is enhanced by a factor of 17.66.

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Section: A Cc-sr Designmentioning

confidence: 99%

“…the semi-classical resonance of the cavity is located at ω 0 − Ω c . In steady state, the phase and amplitude of the field inside the cavity satisfy a set of self-consistent equations [19]:…”

Section: Wlc-sr Configurationmentioning

confidence: 99%

Quantum noise limits in white-light-cavity-enhanced gravitational wave detectors

Zhou

Shahriar

2015

Phys. Rev. D

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“…Thus far, many proposals for enhancing the sensitivity of SFS have been made [17,[19][20][21][22][23][24]. Most of them are based on enhancement using the effect of anomalous dispersion [19][20][21][22][23][24].…”

Section: Introductionmentioning

confidence: 99%

“…Most of them are based on enhancement using the effect of anomalous dispersion [19][20][21][22][23][24]. The SFS can be made larger by the effect of anomalous dispersion of superluminal light propagation in a resonator [19].…”

Section: Introductionmentioning

confidence: 99%

Large Sagnac frequency splitting in a ring resonator operating at an exceptional point

Sunada

2017

Phys. Rev. A

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In rotating ring resonators, resonant frequencies are split because of the Sagnac effect. The rotation sensitivity of the frequency splitting characterizes the sensitivity of resonator-based optical gyroscopes. In this paper, it is shown that the sensitivity of frequency splitting can be significantly enhanced in a ring resonator operating at an exceptional point (EP), which is a non-Hermitian degeneracy where two eigenvalues and the corresponding eigenmodes coalesce. As an example, a ring resonator with a periodic structure is proposed and theoretically and numerically studied. It is numerically demonstrated that in the resonator operating near an EP, the rotation-induced frequency splitting can be more than two orders greater than that in conventional ring resonators. In addition, this paper discusses the influence of the resonator loss on the measurement sensitivity of the frequency splitting and a method of rotation detection based on rotation-induced changes of eigenmodes near an EP.

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“…The problem of superluminal velocity is not only of academic interest, but a problem of technology development too. For example, the superluminal ring laser gyroscope first proposed by Yum et al [20] improves the sensitivity of a gyroscope by a factor 10 3 -10 6 and can be used for improving the sensitivity of accelerometers by the same factor. This technology can be used for application to precision navigation, precision measurement of vibration, strain and magnetic field, and gravitational wave detectors.…”

Section: Introductionmentioning

confidence: 99%

Exotic Resonant States for One-Dimensional Twin Complex Square Potentials

Grama¹,

Grama²,

Zamfirescu³

et al. 2013

Zeitschrift Für Naturforschung A

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The natural modes for one-dimensional (1D) twin square potentials of complex strength g are studied. A global analysis of the natural modes based on the construction of the Riemann surfaces R I g and R II g of the multiple valued function k = k(g), where k(g) defines the poles of the transmission coefficient, is done. To each nonradiative or radiative mode a sheet of the Riemann surface is associated. All the natural modes of the system are identified and treated in a unified way. New classes of resonant state poles with exotic properties are identified on the k-plane images of the sheets of R I g and R II g and the properties of the exotic modes are studied. The traversal time through the 1D twin square potentials is analysed. Subluminal and superluminal traversal times are evidenced. An approximate formula for the frequencies k for which the maximal superluminal velocities are gained as a function of the potential parameters is given.

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Superluminal ring laser for hypersensitive sensing

Cited by 93 publications

References 16 publications

Quantum noise limits in white-light-cavity-enhanced gravitational wave detectors

Quantum noise limits in white-light-cavity-enhanced gravitational wave detectors

Large Sagnac frequency splitting in a ring resonator operating at an exceptional point

Exotic Resonant States for One-Dimensional Twin Complex Square Potentials

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Superluminal ring laser for hypersensitive sensing

Cited by 93 publications

References 16 publications

Quantum noise limits in white-light-cavity-enhanced gravitational wave detectors

Quantum noise limits in white-light-cavity-enhanced gravitational wave detectors

Large Sagnac frequency splitting in a ring resonator operating at an exceptional point

Exotic Resonant States for One-Dimensional Twin Complex Square Potentials

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Product

Resources

About

Superluminal ring laser for hypersensitive sensing