Observation of the Rabi Oscillation of Light Driven by an Atomic Spin Wave

Chen, L. Q.; Zhang, Guo-Wan; Bian, Cheng-ling; Yuan, Chun-Hua; Ou, Z. Y.; Zhang, Weiping

doi:10.1103/physrevlett.105.133603

Cited by 21 publications

(15 citation statements)

References 22 publications

(32 reference statements)

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“…Figure 2(c) presents the cross-correlation C(t). We observe that correlations are high during the entire process, which proves that at any time both processes interact with the same atomic coherence ρ gh , similarly as in some previous works in Λ-level configurations [28,32]. In particular, we are able to measure high correlation >0.9 at the very beginning of the pulses, were light intensities are low.…”

Section: A Statistics and Correlationssupporting

confidence: 88%

Coupling of four-wave mixing and Raman scattering by ground-state atomic coherence

2016

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We demonstrate coupling of light resonant to transition between two excited states of rubidium and long-lived ground-state atomic coherence. In our proof-of-principle experiment a non-linear process of four-wave mixing is used to achieve light emission proportional to independently prepared ground-state atomic coherence. Strong correlations between stimulated Raman scattering light heralding generation of ground-state coherence and the four-wave mixing signal are measured and shown to survive the storage period, which is promising in terms of quantum memory applications. The process is characterized as a function of laser detunings.

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Section: A Statistics and Correlationssupporting

confidence: 88%

Coupling of four-wave mixing and Raman scattering by ground-state atomic coherence

2016

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“…Atomic electron spin is a basic information carrier in quantum science [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15]. Coherence protection is of major importance for precision measurements and for scalable quantum information networks.…”

Section: Introductionmentioning

confidence: 99%

Coherence Protection of Electron Spin in Earth-field Range by All-optical Dynamic Decoupling

Yang,

Bao,

Chen

et al. 2021

Preprint

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In recent years, unshielded atomic systems have been attracting researchers' attention, in which decoherence is one of the major problems, especially for high precision measurements. The nonlinear Zeeman effect and magnetic field gradient are the main decoherence sources of atomic electron spin in Earth-field range. Here, we propose a method to cancel out the two dominant broadening effects simultaneously by an all-optical dynamic decoupling approach based on Raman scattering in the 87 Rb Zeeman sublevels. By adjusting the parameters of the Raman lasers, we realize spin control along an arbitrary direction. We analyze the state evolution of atomic spin under the Raman light control sequence in detail. The results show that both the nonlinear Zeeman effect and magnetic field gradient can be significantly suppressed.

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“…Even so, the effect is the same: greatly enhanced Raman conversion efficiency. Good Raman conversion efficiency can be achieved in a wide range of Raman pump power, even down to the single-photon level in principle [25].…”

Section: Introductionmentioning

confidence: 99%

Mirrorless parametric oscillation in an atomic Raman process

et al. 2014

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We investigate experimentally and theoretically the onset of parametric oscillation in a single-pass atomic Raman scattering process without the optical feedback. We find that this Raman oscillation effect is due to the coherent buildup of the atomic spin waves, and therefore the threshold of the Raman pump power for the onset of the oscillation depends on the decoherence time of the atomic spin waves and the Raman coupling constant but is not sensitive to the loss of the Stokes field, unlike the effect of amplified spontaneous emission. A simple theory of atomic Raman process fits the experimental results very well. The long decoherence time of the atomic spin waves in the atomic Raman process leads to a threshold power as low as a few hundred microwatts.

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Observation of the Rabi Oscillation of Light Driven by an Atomic Spin Wave

Cited by 21 publications

References 22 publications

Coupling of four-wave mixing and Raman scattering by ground-state atomic coherence

Coupling of four-wave mixing and Raman scattering by ground-state atomic coherence

Coherence Protection of Electron Spin in Earth-field Range by All-optical Dynamic Decoupling

Mirrorless parametric oscillation in an atomic Raman process

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