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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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An apparatus for millimeter-wave cavity-mediated quantum gates between Rydberg atoms

Poster 53
Presenter: Tony Zhang (Stanford University)
Authors: Michelle Wu (Stanford University), Sam Cohen (Stanford University), Lin Xin (Stanford University), Debadri Das (SLAC National Accelerator Laboratory), Kevin Multani (Stanford University), Nolan Peard (Stanford University), Anne-Marie Valente-Feliciano (Jefferson Lab/Jefferson Science Associates), Paul Welander (SLAC National Accelerator Laboratory), Amir Safavi-Naeini (Stanford University), Emilio Nanni (SLAC - Natl Accelerator Lab), Monika Schleier-Smith (Stanford University)

Rydberg atom arrays have become a leading platform for quantum science, but the locality of Rydberg interactions limits the efficient generation of long-range entanglement, as compared to the nonlocal interactions achievable between trapped ions or cold atoms in optical cavities. We present progress toward trapping Rydberg atoms in a superconducting millimeter-wave Fabry–Pérot cavity to enable high-fidelity nonlocal entangling gates. Coupling a transition between circular Rydberg states to a cavity mode will enable atoms to interact with each other regardless of their locations by an effective cavity-mediated interaction. A superconducting cavity with finesse 6 × 107 at 1 K and high optical access (numerical aperture 0.56) promises highly coherent atom–photon interactions for single-atom trapping and imaging, while realization of ordered arrays of Rydberg atoms in a separate room-temperature system provides a testbed for the local control required for the hybrid atom–cavity platform. This new apparatus will enable realization of entangling gates between atom pairs separated by millimeter distances, scalable preparation of many-atom entangled states, and exploration of strongly correlated phases arising from the interplay of local and global interactions.

Funding acknowledgement

This material is based upon work supported by the U.S. Department of Energy, Office of Science, Office of Workforce Development for Teachers and Scientists, Office of Science Graduate Student Research (SCGSR) program. The SCGSR program is administered by the Oak Ridge Institute for Science and Education for the DOE under contract number DE‐SC0014664.

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