A Rydberg blockade CNOT gate and entanglement in a 2D array of neutral atom qubits
We present experimental results on two-qubit Rydberg blockade quantum gates and entanglement in a two-dimensional qubit array. Without post selection against atom loss we achieve a Bell state fidelity of \(0.73\pm 0.05\), the highest value reported to date. The experiments are performed in an array...
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| creator | Maller, K M Lichtman, M T Xia, T Sun, Y Piotrowicz, M J Carr, A W Isenhower, L Saffman, M |
| description | We present experimental results on two-qubit Rydberg blockade quantum gates and entanglement in a two-dimensional qubit array. Without post selection against atom loss we achieve a Bell state fidelity of \(0.73\pm 0.05\), the highest value reported to date. The experiments are performed in an array of single Cs atom qubits with a site to site spacing of \(3.8 ~ \mu\rm m\). Using the standard protocol for a Rydberg blockade C\(_Z\) gate together with single qubit operations we create Bell states and measure their fidelity using parity oscillations. We analyze the role of AC Stark shifts that occur when using two-photon Rydberg excitation and show how to tune experimental conditions for optimal gate fidelity. |
| doi_str_mv | 10.48550/arxiv.1506.06416 |
| format | Article |
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| subjects | Arrays Physics - Atomic Physics Physics - Quantum Physics Quantum entanglement Qubits (quantum computing) |
| title | A Rydberg blockade CNOT gate and entanglement in a 2D array of neutral atom qubits |
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