Compact diode-laser-pumped quantum light source based on four-wave mixing in hot rubidium vapor

Qin, Zhongzhong; Jing, Jietai; Zhou, Jun; Liu, Cunjin; Pooser, Raphael C.; Zhou, Zhiqiang; Zhang, Weiping

doi:10.1364/ol.37.003141

Cited by 49 publications

(35 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…When corrected for the index of refraction for the pump, this condition corresponds to the introduction of a small angle θ 1 • between the pump and the probe beams. This is indeed how the best levels of squeezing have been experimentally observed [7][8][9][10]. This also justifies the implicit geometric phase-matching condition used in previous theoretical studies [13].…”

Section: Optimizing For Quantum Noise Reductionsupporting

confidence: 81%

“…In contrast, most recent squeezing experiments in hot atomic vapors operate at large detuning 1 /2π , typically 0.5-1 GHz, and at larger pump power [8][9][10]15]. In these conditions, the susceptibilities take a different form from the resonant case.…”

Section: Theoretical Model Of Nondegenerate Four-wave Mixingmentioning

confidence: 96%

“…From the model we deduce the best parameters in terms of beam geometry and beam detunings, and compare them to the recent squeezing experiments of Refs. [7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Role of the phase-matching condition in nondegenerate four-wave mixing in hot vapors for the generation of squeezed states of light

et al. 2013

View full text Add to dashboard Cite

Nondegenerate forward four-wave mixing in hot atomic vapors has been shown to produce strong quantum correlations between twin beams of light [McCormick et al., Opt. Lett. 32, 178 (2007)], in a configuration which minimizes losses by absorption. In this paper, we look at the role of the phase-matching condition in the trade-off that occurs between the efficiency of the nonlinear process and the absorption of the twin beams. To this effect, we develop a semiclassical model by deriving the atomic susceptibilities in the relevant doubleconfiguration and by solving the classical propagation of the twin-beam fields for parameters close to those found in typical experiments. These theoretical results are confirmed by a simple experimental study of the nonlinear gain experienced by the twin beams as a function of the phase mismatch. The model shows that the amount of phase mismatch is key to the realization of the physical conditions in which the absorption of the twin beams is minimized while the cross coupling between the twin beams is maintained at the level required for the generation of strong quantum correlations. The optimum is reached when the four-wave mixing process is not phase matched for fully resonant four-wave mixing.

show abstract

Section: Optimizing For Quantum Noise Reductionsupporting

confidence: 81%

Section: Theoretical Model Of Nondegenerate Four-wave Mixingmentioning

confidence: 96%

See 1 more Smart Citation

Role of the phase-matching condition in nondegenerate four-wave mixing in hot vapors for the generation of squeezed states of light

et al. 2013

View full text Add to dashboard Cite

show abstract

“…It has been shown that 4WM in Rb vapor can produce quantum noise reduction spanning multiple spatial modes [12,33,34]. The system has also lent itself well to integration with several sensing scenarios, including surface plasmon resonance sensors, quantum-enhanced image sorting, compressive quantum imaging, and nonlinear interferometry [33,[35][36][37].…”

Section: Experimental Techniquesmentioning

confidence: 99%

Ultrasensitive measurement of microcantilever displacement below the shot-noise limit

Pooser

Lawrie

2015

Optica

Self Cite

162

111

View full text Add to dashboard Cite

The displacement of micro-electro-mechanical-systems (MEMS) cantilevers is used to measure a broad variety of phenomena in devices ranging from force microscopes to biochemical sensors to thermal imaging systems. We demonstrate the first direct measurement of a MEMS cantilever displacement with a noise floor 4 dB below the shot noise limit (SNL) at an equivalent optical power. By combining multi-spatial-mode quantum light sources with a simple differential measurement, we show that sub-SNL MEMS displacement sensitivity is highly accessible compared to previous efforts that measured the displacement of macroscopic mirrors with very distinct spatial structures crafted with multiple optical parametric amplifiers and locking loops. These results support a new class of quantum MEMS sensor with an ultimate signal to noise ratio determined by quantum correlations, enabling ultra-trace sensing, imaging, and microscopy applications in which signals were previously obscured by shot noise.

show abstract

“…We generate intensity difference squeezed light by means of four-wave mixing in hot rubidium vapor [16][17][18][19]. The double lambda system between the hyperfine ground and excited states on the D1 line of 85 Rb provides a strong χ 3 nonlinearity [20][21][22].…”

Section: Squeezed State Generationmentioning

confidence: 99%

Nonlinear optical magnetometry with accessible in situ optical squeezing

2014

View full text Add to dashboard Cite

We demonstrate compact and accessible squeezed-light magnetometry using four-wave mixing in a single hot rubidium vapor cell. The strong intrinsic coherence of the four wave mixing process results in nonlinear magneto-optical rotation (NMOR) on each mode of a two mode relative-intensity squeezed state. This framework enables 4.7 dB of quantum noise reduction while the opposing polarization rotation signals of the probe and conjugate fields add to increase the total signal to noise ratio.

show abstract

Compact diode-laser-pumped quantum light source based on four-wave mixing in hot rubidium vapor

Cited by 49 publications

References 26 publications

Role of the phase-matching condition in nondegenerate four-wave mixing in hot vapors for the generation of squeezed states of light

Role of the phase-matching condition in nondegenerate four-wave mixing in hot vapors for the generation of squeezed states of light

Ultrasensitive measurement of microcantilever displacement below the shot-noise limit

Nonlinear optical magnetometry with accessible in situ optical squeezing

Contact Info

Product

Resources

About