Imaging Quantum Spatial Modes
ORAL
Abstract
We expand on classical reconstruction methods to image spatial modes of quantum fields which are made of a single squeezed and single thermal modes via quadrature homodyne measurements over a set of structured spatial masks.
The spatial mode is an important property of the electromagnetic field, yet characterizing multimode quantum fields, such as a squeezed vacuum, remains challenging. Moreover, efficient quantum noise detection requires perfect spatial overlap between the quantum probe and a strong local oscillator (LO), which amplifies the weak probe to detectable levels. There are several methods to find optimal overlap by iteratively tuning the LO to match a particular quantum mode, yet it is hard to extract full information about mode structure. We develop a method that utilizes structured spatial masks applied to the quantum field, quadrature measurements with homodyning, and single pixel detection to extract the spatial quantum mode composition.
The spatial mode is an important property of the electromagnetic field, yet characterizing multimode quantum fields, such as a squeezed vacuum, remains challenging. Moreover, efficient quantum noise detection requires perfect spatial overlap between the quantum probe and a strong local oscillator (LO), which amplifies the weak probe to detectable levels. There are several methods to find optimal overlap by iteratively tuning the LO to match a particular quantum mode, yet it is hard to extract full information about mode structure. We develop a method that utilizes structured spatial masks applied to the quantum field, quadrature measurements with homodyning, and single pixel detection to extract the spatial quantum mode composition.
*This work was supported by the U.S. Air Force Office of Scientific Research through Grant No. AFOSR FA9550-19-1- 0066
–
Publication: C. Gabaldon, P. Barge, S. L. Cuozzo, I. Novikova, H. Lee, L. Cohen, E. E. Mikhailov, "Quantum fluctuations spatial mode profiler" , AVS Quantum Science, 5(2). (2023)
S. L. Cuozzo, C. Gabaldon, P. J. Barge, Z.Niu, H. Lee, L. Cohen, I. Novikova, and E. E. Mikhailov, "Wave-front reconstruction via single-pixel homodyne imaging," Opt. Express 30, 37938-37945 (2022)
Presenters
-
Charris A Gabaldon
- William & Mary