Squeezed States of Light

Baozhu Lu, BI Si-wen, Fei Feng +2 more

A stable amplitude squeezed-state light was generated by utilizing the nondegenerate optical parametric amplifier based on periodically poled KTiOPO4 crystal at 1064 nm. We observed −4.93 dB of squeezing with a local oscillator phase locked in homodyne measurement. The imaging experiments of the resolution target have shown that the imaging resolution, which was based on squeezed-state light, is 1.41 times as much as the resolution that was acquired using coherent light as light source. In addition, the squeezed-state light was applied for imaging of the virtual object. It was found that the characters on the board were much more easily discerned with squeezed light as a light source than with coherent light. This result paves the way for further improvements of imaging resolution by use of the squeezed-state light.

Daniel F. Walls

Pierre Meystre, Murray Sargent

Xuling Lin, BI Si-wen, Song Yang +5 more

Squeezed light is an important non-classical light field. In this paper, we demonstrated a designed active imaging system which use squeezed state light instead of coherent light as light source. The squeezed state light is generated by utilizing the degenerate optical parametric amplifier based on periodically poled KTiOPO4 crystal. In order to obtain better imaging results, microlens arrays are used for homogenizing the squeezed light. We describe experiment setup and present some design result.

Pierre Meystre, Murray Sargent

S. Ast

Author: Ast, Stefan; Genre: Thesis; Published in Print: 2015; Open Access; Title: New approaches in squeezed light generation: Quantum states of light with GHz squeezing bandwidth and squeezed light generation via the cascaded Kerr effect