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Twin-beam intensity-difference squeezing below 10 Hz

Meng-Chang Wu, Bonnie L. Schmittberger, Nicholas R. Brewer +3 more

We report the generation of strong, bright-beam intensity-difference squeezing down to measurement frequencies below 10 Hz. We generate two-mode squeezing in a four-wave mixing (4WM) process in Rb vapor, where the single-pass-gain nonlinear process does not require cavity locking and only relies on passive stability. We use diode laser technology and several techniques, including dual seeding, to remove the noise introduced by seeding the 4WM process as well as the background noise. Twin-beam intensity-difference squeezing down to frequencies limited only by the mechanical and atmospheric stability of the lab is achieved. These results should enable important low-frequency applications such as direct intensity-difference imaging with bright beams on integrating detectors.We report the generation of strong, bright-beam intensity-difference squeezing down to measurement frequencies below 10 Hz. We generate two-mode squeezing in a four-wave mixing (4WM) process in Rb vapor, where the single-pass-gain nonlinear process does not require cavity locking and only relies on passive stability. We use diode laser technology and several techniques, including dual seeding, to remove the noise introduced by seeding the 4WM process as well as the background noise. Twin-beam intensity-difference squeezing down to frequencies limited only by the mechanical and atmospheric stability of the lab is achieved. These results should enable important low-frequency applications such as direct intensity-difference imaging with bright beams on integrating detectors.

arXiv:1810.09589Optics ExpressFeb 8, 201923 citations

Quantum-correlated Light Source from Dual-seeded Four-wave Mixing with a Diode Laser System

Meng-Chang Wu, Nicholas R. Brewer, Rory W. Speirs +3 more

We have obtained broadband intensity-difference squeezing from sub 10 Hz to 20 MHz via four-wave mixing (4WM) in a rubidium vapor. This was accomplished by dual-seeding the 4WM process and using semiconductor diode lasers.

Conference on Lasers and Electro-OpticsJan 1, 20190 citations

Quantum-correlated Light Source from Dual-seeded Four-wave Mixing with a Diode Laser System

Meng-Chang Wu, Nicholas R. Brewer, Rory W. Speirs +3 more

We have obtained broadband intensity-difference squeezing from sub 10 Hz to 20 MHz via four-wave mixing (4WM) in a rubidium vapor. This was accomplished by dual-seeding the 4WM process and using semiconductor diode lasers. © 2019 The Author(s)

Conference on Lasers and Electro-OpticsMay 5, 20190 citations

Bright Beams of Intensity Difference Squeezed Light for use in Sub-shot-noise Imaging

Rory W. Speirs, Nicholas R. Brewer, Meng-Chang Wu +1 more

We present a method for using bright beams of intensity difference squeezed light to perform sub-shot-noise imaging. The intensity correlated twin beams are generated by four wave mixing in rubidium vapour.

Conference on Lasers and Electro-OpticsJan 1, 20190 citations

Bright Beams of Intensity Difference Squeezed Light for use in Sub-shot-noise Imaging

Rory W. Speirs, Nicholas R. Brewer, Mong-Chang Wu +1 more

We present a method for using bright beams of intensity difference squeezed light to perform sub-shot-noise imaging. The intensity correlated twin beams are generated by four wave mixing in rubidium vapour.

Conference on Lasers and Electro-OpticsMay 5, 20190 citations

Generation of narrowband twin beams for atomic manipulation

Vincent Boyer, Colin F. McCormick, E. Arimondo +2 more

We have demonstrated 3dB relative intensity squeezing from a non-degenerate four-wave mixing scheme in hot atomic rubidium vapor. The generated twin beams are narrowband and are suitable for atomic manipulation.

Frontiers in OpticsJan 1, 20060 citations

Twin-beam Intensity-difference Squeezing below 10 Hz from Dual-seeded Four-wave Mixing

Abstract

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Twin-beam Intensity-difference Squeezing below 10 Hz from Dual-seeded Four-wave Mixing

Abstract

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