Ramona Cheng
Pronouns: she/her
Research Mentor(s): Alexander Burgers
Research Mentor School/College/Department: ECE / 0
Program:
Authors: Ramona Cheng, Varun Nair, Alexander Burgers
Session: Session 1: 9:00 am – 9:50 am
Poster: 97
Abstract
The Quantum Optics Lab investigates arrays of cold Ytterbium (Yb) atoms for quantum information technology applications. To facilitate research in quantum technologies, the laboratory manipulates numerous atoms to create cooperative interactions. They also control atoms close to nanophotonic structures and optical cavities. These platforms enhance and channel quantum information (emitted photons entangled with the atom) from the atoms into detectable modes for distributing entanglement. The atoms are precisely controlled using lasers at several wavelengths tuned to relevant transitions in Yb. The ability to continuously monitor the lasers’ wavelengths in real time during experiments is crucial to these objectives. This project focuses on developing a single-mode fiber switcher utilizing a galvanometer (galvo) with a broadband mirror attached, which quickly steers (about 1 ms) beams from multiple lasers into a common fiber. A Digital to Analog Converter (DAC) generates electrical signals to manipulate the angles of the galvo mirror, steering different lasers toward a wavemeter that is used to monitor wavelengths. The primary objective is to address the limitations of existing switchers, which are slow and narrow band. The proposed single-mode switcher is designed to operate over a wide range of wavelengths by manipulating the galvo’s mirror angles to capture readings from different lasers, allowing for almost simultaneous readings from multiple lasers. A Python program synchronizes the galvo and wavemeter to ensure accurate readings, and a Graphical User Interface provides real-time data monitoring. Upon completion, this single-mode switcher will be integrated into the experimental apparatus to provide real-time analysis of the relevant laser wavelengths. This apparatus supports ongoing research endeavors to explore new frontiers in atom-photon interactions.
