Deterministic entanglement of two neutral atoms via Rydberg blockade

By X. L. Zhang, L. Isenhower, A. Gill, Thomas G. Walker, Mark Saffman. 2010

135 citations recorded by the source corpus.

We demonstrate the deterministic entanglement of two individually addressed neutral atoms using a Rydberg blockade mediated controlled-not gate. Parity oscillation measurements reveal a Bell state fidelity of F=0.58{+-}0.04, which is above the entanglement threshold of F=0.5, without any correction for atom loss, and F=0.71{+-}0.05 after correcting for background collisional losses. The fidelity results are shown to be in good agreement with a detailed error model.

Subfields: Artificial Intelligence, Atomic and Molecular Physics, and Optics

View Paper: https://www.semanticscholar.org/paper/659d80cb54cdf704a42ad73d26f0ad27534101ff

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In Artificial Intelligence

In Atomic and Molecular Physics, and Optics

Citations in the corpus

Cooling a Single Atom in an Optical Tweezer to Its Quantum Ground State (2012, background): “where Ω0 is the bare Rabi frequency, σ + is the spin-1/2 raising operator, ∆k is the momentum transfer for the Raman beam configuration, and the exponential term is the momentum translation operator associated with the coherent momentum kick due to absorption of a photon from one beam and stimulated”
Experimental investigations of dipole–dipole interactions between a few Rydberg atoms (2016, background): “71 when correcting for the atom losses [88].”
Analysis of imperfections in the coherent optical excitation of single atoms to Rydberg states (2018, result): “Figure 1 gives a typical example; similar behaviors are observed in other setups [3,18,21,34,35].”
Quantum computing with atomic qubits and Rydberg interactions: progress and challenges (2016, methodology): “The first Rydberg blockade entanglement experiments were performed in 2010[35, 33, 34].”
Natural and artificial atoms for quantum computation (2010, background): “When looking for a physical system to realize qubits (which are controllable two-level systems), perhaps the most obvious candidate is neutral atoms [13–38].”