Year: 2026
Type: preprint
Abstract: Integrating Rydberg-state control of atom-atom interactions with cavity control of atom-light interactions enables the combination of local entangling operations with photon-mediated long-range coupling, measurement, and communication. Such integration is challenging because electric fields generated by charges on cavity optics and by cavity-stabilizing actuators may disturb Rydberg-state coherence. Here, we couple a Rydberg tweezer array to a high-cooperativity optical cavity, suppressing the electric fields produced by cavity length actuation so that the residual field variation of about $3~\mathrm{mV/cm}$ rms does not limit Rydberg coherence. We demonstrate two capabilities that neither system provides alone. First, we use Purcell-enhanced fluorescence to read out atoms directly in the ground-Rydberg basis within $7.5~μ\mathrm{s}$, well within the Rydberg-state lifetime, with ground- and Rydberg-state detection infidelities of $3\%$ and $5\%$, respectively, and with low atom loss. Second, we use Rydberg-Rydberg interactions to control collective light-atom scattering into the cavity mode. Specifically, we drive blockaded Rabi oscillations between a state with two ground-state atoms, which scatter collectively with a superradiant or subradiant rate controlled by the atomic positions, and an entangled state with a single Rydberg excitation, which scatters like a single atom. These capabilities open routes toward networked Rydberg processors, mid-circuit measurements in analog quantum simulators, and many-body quantum optics with entangled emitters coupled collectively to light.
Source: arXiv (Cornell University)
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
Funders: National Science Foundation, U.S. Department of Defense, U.S. Department of Energy, Adolph C. and Mary Sprague Miller Institute for Basic Research in Science, University of California Berkeley, Defense Advanced Research Projects Agency, Office of Science, National Defense Science and Engineering Graduate, Multidisciplinary University Research Initiative, Air Force Office of Scientific Research, Army Research Office
Awards: G1797871914, G2415076821, RESEARCH, MRI: Development of Rydberg Tweezer Quantum Processor with Real-Time Optical Cavity Readout, G2984845593, QLCI-CI: NSF Quantum Leap Challenge Institute for Present and Future Quantum Computing, G3236695045, G3898069283, G5884252700, NEW GRANT - DURIP, G8616913
OpenAlex ID: W7222543930