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Atomic Fock State Preparation Using Rydberg Blockade

2014; American Physical Society; Volume: 112; Issue: 4 Linguagem: Inglês

10.1103/physrevlett.112.043602

1092-0145

Matthew Ebert, Alexander Gill, Michael Gibbons, Xianli Zhang, M. Saffman, Thad Walker,

Quantum optics and atomic interactions

We use coherent excitation of 3--16 atom ensembles to demonstrate collective Rabi flopping mediated by Rydberg blockade. Using calibrated atom number measurements, we quantitatively confirm the expected $\sqrt{N}$ Rabi frequency enhancement to within 4%. The resulting atom number distributions are consistent with an essentially perfect blockade. We then use collective Rabi $\ensuremath{\pi}$ pulses to produce $\mathcal{N}=1$, 2 atom number Fock states with fidelities of 62% and 48%, respectively. The $\mathcal{N}=2$ Fock state shows the collective Rabi frequency enhancement without corruption from atom number fluctuations.