### Abstract

Original language | English |
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Number of pages | 1 |

Publication status | Published - 25 Jul 2018 |

Event | 26th International Conference on Atomic Physics - Barcelona, Spain Duration: 22 Jul 2018 → 27 Jul 2018 |

### Conference

Conference | 26th International Conference on Atomic Physics |
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Abbreviated title | ICAP2018 |

Country | Spain |

City | Barcelona |

Period | 22/07/18 → 27/07/18 |

### Fingerprint

### Keywords

- quantum information processing
- highly excited Rydberg states
- Rydberg atoms
- Ramsey spectroscopy

### Cite this

*Coherent control of addressable Rydberg atoms for hybrid quantum information processing*. Poster session presented at 26th International Conference on Atomic Physics, Barcelona, Spain.

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**Coherent control of addressable Rydberg atoms for hybrid quantum information processing.** / Picken, C. J.; Legaie, R.; McDonnell, K.; Pritchard, J. D.

Research output: Contribution to conference › Poster

TY - CONF

T1 - Coherent control of addressable Rydberg atoms for hybrid quantum information processing

AU - Picken, C. J.

AU - Legaie, R.

AU - McDonnell, K.

AU - Pritchard, J. D.

PY - 2018/7/25

Y1 - 2018/7/25

N2 - Neutral atoms provide an excellent resource for quantum information processing, combining the long atomic coherence times of the hyperfine ground-state with strong dipole-dipole interactions of highly excited Rydberg states for generating deterministic entanglement between qubits separated by < 10 µm [1]. Scalable long-range interactions can be obtained by coupling the atomic array to a superconducting microwave cavity enabling hybrid quantum information processing where the cavity-mediated entanglement allows atoms to be coupled over cm length scales. We present the first steps towards such an experiment incorporating high fidelity readout using an sCMOS camera [2] and the ability to drive fast, optically addressable rotations of the hyperfine-encoded qubits to the Rydberg state. Using our sub-kHz cavitystabilised laser system [3] we demonstrate coherent control of single Rydberg atoms, performing Ramsey spectroscopy to determine coherence time and to generate entanglement between a pair of atoms separated by 6 µm. Combining this excitation scheme with our ground-state Raman lasers we show progress towards the implementation of a mesoscopic Rydberg gate based on electromagnetically induced transparency (EIT) offering robust entanglement of multi-atom ensembles [4].

AB - Neutral atoms provide an excellent resource for quantum information processing, combining the long atomic coherence times of the hyperfine ground-state with strong dipole-dipole interactions of highly excited Rydberg states for generating deterministic entanglement between qubits separated by < 10 µm [1]. Scalable long-range interactions can be obtained by coupling the atomic array to a superconducting microwave cavity enabling hybrid quantum information processing where the cavity-mediated entanglement allows atoms to be coupled over cm length scales. We present the first steps towards such an experiment incorporating high fidelity readout using an sCMOS camera [2] and the ability to drive fast, optically addressable rotations of the hyperfine-encoded qubits to the Rydberg state. Using our sub-kHz cavitystabilised laser system [3] we demonstrate coherent control of single Rydberg atoms, performing Ramsey spectroscopy to determine coherence time and to generate entanglement between a pair of atoms separated by 6 µm. Combining this excitation scheme with our ground-state Raman lasers we show progress towards the implementation of a mesoscopic Rydberg gate based on electromagnetically induced transparency (EIT) offering robust entanglement of multi-atom ensembles [4].

KW - quantum information processing

KW - highly excited Rydberg states

KW - Rydberg atoms

KW - Ramsey spectroscopy

UR - http://icap2018.eu/

M3 - Poster

ER -