Two-beam Coupling in the Production of Quantum Correlated Images by Four-wave Mixing
arXiv:2105.02399 · doi:10.1364/OE.424392
Abstract
We investigate the effect of 2-beam coupling in different imaging geometries in generating intensity-difference squeezing from four-wave mixing (4WM) in Rb atomic vapors. A recently-introduced dual-seeding technique can cancel out the classical noise in a seeded four-wave mixing process. This dual-seeding technique, however, can introduce new complications that involve 2-beam coupling between different seeded spatial modes in the atomic vapor and can ruin squeezing at frequencies on the order of the atomic linewidth and below. This complicates some forms of quantum imaging using these systems. Here we show that seeding the 4WM process with skew rays can eliminate the excess noise caused by 2-beam coupling. To avoid 2-beam coupling in bright, seeded images, it is important to re-image the object in the gain medium, instead of focussing through it.
References in corpus (14)
- Experimental realization of sub-shot-noise quantum imaging
- Realisation of the first sub shot noise wide field microscope
- Imaging Through Noise With Quantum Illumination
- Phase sensing beyond the standard quantum limit with a truncated SU(1,1) interferometer
- Photon number correlation for quantum enhanced imaging and sensing
- Role of the phase-matching condition in non-degenerate four-wave mixing in hot vapors for the generation of squeezed states of light
- Scalable squeezed light source for continuous variable quantum sampling
- Real-Time Source Independent Quantum Random Number Generator with Squeezed States
- Toward real-time quantum imaging with a single pixel camera
- Imaging using quantum noise properties of light
- Generation of Rb-resonant bright two-mode squeezed light with four-wave mixing
- Squeezed-twin-beam generation in strongly absorbing media
- Twin-beam intensity-difference squeezing below 10 Hz
- Compact sub-kilohertz low-frequency quantum light source based on four-wave mixing in cesium vapor