Quantum Noise Correlations of an Optical Parametric Oscillator Based on a Nondegenerate Four Wave Mixing Process in Hot Alkali Atoms

Guerrero, A. Montaña; Nussenzveig, P.; Martinelli, M.; Marino, Alberto M.; Florez, H. M.

doi:10.1103/physrevlett.125.083601

Cited by 28 publications

(15 citation statements)

References 23 publications

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“…While such states are not able to reach the ultimate bound in general, they can achieve a lower overall QCRB and surpass the classical state-of-the-art [19]. Here we specialize to the use of the bright two-mode squeezed state (bTMSS), as it approaches the ultimate bound at high levels of squeezing [35] and can be generated at high powers [41][42][43]. Thus, in practice, the bTMSS gives a better absolute estimation of transmission than the Fock or vTMSS given that it is a macroscopic quantum state.…”

Section: Introductionmentioning

confidence: 99%

Transmission Estimation at the Fundamental Quantum Cramér-Rao Bound with Macroscopic Quantum Light

Woodworth¹,

Hermann-Avigliano²,

Chan³

et al. 2022

Preprint

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The field of quantum metrology seeks to apply quantum techniques and/or resources to classical sensing approaches with the goal of enhancing the precision in the estimation of a parameter beyond what can be achieved with classical resources. Theoretically, the fundamental minimum uncertainty in the estimation of a parameter for a given probing state is bounded by the quantum Cramér-Rao bound. From a practical perspective, it is necessary to find physical measurements that can saturate this fundamental limit and to show experimentally that it is possible to perform measurements with the required precision to do so. Here we perform experiments that saturate the quantum Cramér-Rao bound for transmission estimation over a wide range of transmissions when probing the system under study with a bright two-mode squeezed state. To properly take into account the imperfections in the generation of the quantum state, we extend our previous theoretical results to incorporate the measured properties of the generated quantum state. For our largest transmission level of 84%, we show a 62% reduction over the optimal classical protocol in the variance in transmission estimation when probing with a bright two-mode squeezed state with 8 dB of intensity-difference squeezing. Given that transmission estimation is an integral part of many sensing protocols, such as plasmonic sensing, spectroscopy, calibration of the quantum efficiency of detectors, etc., the results presented promise to have a significant impact on a number of applications in various fields of research.

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Section: Introductionmentioning

confidence: 99%

Transmission Estimation at the Fundamental Quantum Cramér-Rao Bound with Macroscopic Quantum Light

Woodworth¹,

Hermann-Avigliano²,

Chan³

et al. 2022

Preprint

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“…The parametric amplification (PA) due to the 𝜒 (3) non-linearity leads to the squeezing of the intensity difference which is produced in a narrow bandwidth around the two photon detuning between the pump and probe. Such quantum properties are now exploited to generate multi-mode states [3] and more recently the possibility of implementing an optical parameter oscillator (OPO) [4] operating directly at the atomic wavelength.…”

Section: Introductionmentioning

confidence: 99%

Spectral control of quantum correlations in Four wave mixing using dressing fields

Guerrero¹,

Celis²,

Martinelli³

et al. 2022

Preprint

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We present a microscopic description of dressed four wave mixing (4WM) demonstrating spectral control of quantum correlations. Starting from a double Λ model for a single pump 4WM, we include a dressing field coupling the excited level which leads to a six wave mixing process (6WM). The model describes the enhancement of the amplification and intensity difference squeezing due to the interaction of the dressing field, according to the experimental parameters. Moreover, the model predicts that this mechanism allows the spectral control of the quantum correlations between pair of side-bands by just tuning accordingly the dressing field.

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“…If, however, there is a portion that is useful, we propose ways to gain an initial estimate of the tail exponent (and by extension, higher quantiles) which helps design further measurement setups. The procedures presented in the current manuscript can be used to quantify the instabilities resulting in extreme events common in optical non-linear processes [41,42], and potentially also in non-linear optomechanics [43,44], four-wave mixing in atomic vapors [45,46] and wave-mixing processes in superconducting circuits [47][48][49]. Beyond fundamental interest, extreme events can be used to produce highly non-classical effects distillable to large squeezing and entanglement for quantum technology [50,51].…”

Section: Introductionmentioning

confidence: 99%

Estimation of heavy tails in optical non-linear processes

Rácz,

Ruppert,

Filip

2020

Preprint

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In optical non-linear processes rogue waves can be observed, which can be mathematically described by heavy-tailed distributions. These distributions are special due to the fact that the probability of registering extremely high intensities is significantly higher than for the exponential distribution, which is most commonly observed in statistical and quantum optics. The current manuscript gives a practical overview of the generic statistics toolkit concerning heavy-tailed distributions and proposes methods to deal with issues specific to non-linear optics. We take a closer look at supercontinuum generation, where rogue waves were already observed. We propose modifications to the Hill estimator to deal with detector saturation as well as corrections introduced by pumping the process by bright squeezed vacuum. The suggested methodology facilitates statistically reliable observation of heavy-tailed distribution in non-linear optics, nanooptics, atomic, solid-state processes and optomechanics.

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Quantum Noise Correlations of an Optical Parametric Oscillator Based on a Nondegenerate Four Wave Mixing Process in Hot Alkali Atoms

Cited by 28 publications

References 23 publications

Transmission Estimation at the Fundamental Quantum Cramér-Rao Bound with Macroscopic Quantum Light

Transmission Estimation at the Fundamental Quantum Cramér-Rao Bound with Macroscopic Quantum Light

Spectral control of quantum correlations in Four wave mixing using dressing fields

Estimation of heavy tails in optical non-linear processes

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