Bright Squeezed Light from Dissipative Optomechanical Light Squeezer

Squeezed light has become extremely useful for various quantum optical metrology applications as it provides measurements of optical processes that are less contaminated by quantum noise in a desired light quadrature. Additionally, the measurement error decreases as the light amplitude increases. Bright squeezed light delivers the desired drastic reduction of measurement error beyond what classical light can accomplish with the same intensity. A typical way to generate bright squeezed light is to create squeezed vacuum via optical parametric amplification and then mix it with bright coherent light. Alternatively, one would inject an optical parametric amplifier with a non-zero amplitude coherent signal, which produces a displaced squeezed light at the output. We show that these two methods mix the squeezed quantum noise with non-squeezed noise from the bright coherent state, resulting in less squeezed noise in the combined, brighter output. Recently, a new method for optical noise squeezing has been developed—dissipative optomechanical light squeezing. We will present on theory showing this new method can produce bright squeezed light without compromising noise-squeezing at any amplitude, unlike existing methods.