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Poster Session

Poster Session II

4:00 pm – 6:00 pm, Wednesday June 18 Session H00 Oregon Convention Center, Exhibit Hall E
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Cavity Optomechanical atomic memory for photons with orbital angular momentum

Poster 46
Presenter: Nilamoni Daloi (Rochester Institute of Technology)
Authors: Rahul Gupta (Indian Institute of Technology Bombay), Pardeep Kumar (Max Planck Institute for Science of Light in Erlangen), Aritra Ghosh (Indian Institute of Technology Bhubaneswar), Himadri Dhar (Indian Institute of Technology Bombay), Mishkatul Bhattacharya (Rochester Institute of Technology)

We propose a quantum memory based on an atomic Bose-Einstein condensate (BEC) in a toroidal ring trap inside an optical cavity, driven by laser carrying orbital angular momentum (OAM). The BEC's persistent currents, lasting up to a minute, make it a strong candidate for long-term storage. Under suitable approximations, the system maps to a standard optomechanical model, enabling optical signal storage and retrieval via a mechanical mode. Beyond extended storage time, this platform offers advantages over electromagnetically induced transparency (EIT)-based schemes, as it does not rely on specific atomic energy levels. It also supports strong single-photon–atom coupling, wavelength conversion, and storage and retrieval of OAM states of light.

Funding acknowledgement

Work supported by Air Force Office of Scientific Research (FA9550-23-1-0259)

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