Error-Detected Quantum Operations with Neutral Atoms Mediated by an Optical Cavity
Neutral atom quantum processors are a promising platform for large-scale quantum computing. Integrating them with an optical cavity enables fast nondestructive qubit readout and access to fast remote entanglement generation for quantum networking. Here, we introduce a platform for coupling single at...
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Zusammenfassung: | Neutral atom quantum processors are a promising platform for large-scale
quantum computing. Integrating them with an optical cavity enables fast
nondestructive qubit readout and access to fast remote entanglement generation
for quantum networking. Here, we introduce a platform for coupling single atoms
in optical tweezers to a Fabry-Perot Fiber Cavity. Leveraging the strong
atom-cavity coupling, we demonstrate fast qubit state readout with
99.960$^{+14}_{-24}\%$ fidelity and two methods for cavity-mediated
entanglement generation with integrated error detection. First, we use
cavity-carving to generate a Bell state with 91(4)$\%$ fidelity and a 32(1)$\%$
success rate. Second, we perform a cavity-mediated gate with a deterministic
entanglement fidelity of 52.5(18)$\%$, increased to 76(2)$\%$ with error
detection. The new capabilities enabled by this platform pave the way towards
modular quantum computing and networking. |
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DOI: | 10.48550/arxiv.2410.10787 |