Quantum-enhanced two-photon spectroscopy using two-mode squeezed light

Prajapati, Nikunjkumar; Niu, Ziqi; Novikova, Irina

doi:10.1364/ol.418398

Cited by 26 publications

(7 citation statements)

References 34 publications

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“…A long-term goal of the investigation non-classical light is to actually take advantage of the noise or correlation properties in measurements in a system that can potentially be moved out of the lab [159]. A number of specific demonstrations of the use of squeezed light generated in hot vapors have been made, including in plasmonic sensors [160,161], two-photon spectroscopy [162], cantilever sensors in atomic force microscopy [163], interferometry [164][165][166], and especially magnetometry [25,167]. The enhancement of two-photon absorption using twin-beam sources of correlated light for the possible improvement of the sensitivity of two-photon microscopy is also a current topic of interest [168].…”

Section: Discussionmentioning

confidence: 99%

Hot atomic vapors for nonlinear and quantum optics

et al. 2023

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Nonlinear optics has been a very dynamic field of research with spectacular phenomena discovered mainly after the invention of lasers. The combination of high intensity fields with resonant systems has further enhanced the nonlinearity with specific additional effects related to the resonances. In this paper we review a limited range of these effects which has been studied in the past decades using close-to-room-temperature atomic vapors as the nonlinear resonant medium. In particular we describe four-wave mixing (4WM) and generation of nonclassical light in atomic vapors. One-and two-mode squeezing as well as photon correlations are discussed. Furthermore, we present some applications for optical and quantum memories based on hot atomic vapors. Finally, we present results on the recently developed field of quantum fluids of light using hot atomic vapors.

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Section: Discussionmentioning

confidence: 99%

Hot atomic vapors for nonlinear and quantum optics

et al. 2023

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“…where θ is the phase of the homodyne detector. The optimized squeezing depth over the phases θ turns out to be [42] Using equations ( 37)-( 40), S opt for the output state in equation ( 11) is plotted in figure 12. Special case, when m = 0, we have S opt = 0, which means no squeezing as expected.…”

Section: Squeezing-enhanced Coherent Statementioning

confidence: 99%

Transformation of coherent state in Hadamard gate via multi-photon catalysis

Chen¹,

Ren²,

Yu³

2022

Laser Phys. Lett.

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Based on two-mode continuous Hadamard gate (TCHG) and multi-photon catalysis, this paper presents a scheme to generate non-classical quantum states via coherent state. When considering the m-photon input and m-photon detection in a-mode, the output state is obtained for the input coherent in b-mode. An interesting finding is that as the amplitude of the output coherent state increases, both the detection efficiency and the fidelity of the output quantum state gradually approach zero. Thus, only certain low-intensity quantum light field states can pass through Hadamard gate. In addition, the quantum statistical distribution and squeezing properties of the output quantum states are also analyzed in detail. Our results show that TCHG is a powerful tool for generating non-classical quantum states under multi-photon catalysis.

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“…[35,36], which noted that interactions can enable socalled "super-Heisenberg scaling" with the photon number n in the sense that the optimal scaling of linear phase estimation precision (∼n −1 ) can be surpassed. These studies concern linear spectroscopy, i.e., the absorption of single photons, or the combination of classical lasers with quantum light sources in two-photon Raman transitions [37,38]. The first theoretical works also started to investigate the role of quantum correlations in TPA of entangled photon pairs [39,40] or of photon statistics in coherent control [41].…”

Section: Introductionmentioning

confidence: 99%