All-atomic generation and noise-quadrature filtering of squeezed vacuum in hot Rb vapor

Details All-atomic generation and noise-quadrature filtering of squeezed vacuum in hot Rb vapor All-atomic generation and noise-quadrature filtering of squeezed vacuum in hot Rb vapor

2012-04-18

arxiv.org/abs/1204.3967v1

Physics

Quantum Physics

Scientific paper

With our all-atomic squeezing and filtering setup, we demonstrate control over the noise amplitudes and manipulation of the frequency-dependent squeezing angle of a squeezed vacuum quantum state by passing it through an atomic medium with electromagnetically induced transparency (EIT). We generate low sideband frequency squeezed vacuum using the polarization self-rotation effect in a hot Rb vapor cell, and input it into a second atomic vapor subject to EIT conditions. We use the frequency-dependent absorption of the EIT window to demonstrate an example of squeeze amplitude attenuation and squeeze angle rotation of the quantum noise quadratures of the squeezed probe. These studies have implications for quantum memory and storage as well as gravitational wave interferometric detectors.

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