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High-fidelity entanglement and detection of alkaline-earth Rydberg atoms
- Source :
- Nature Physics. 16:857-861
- Publication Year :
- 2020
- Publisher :
- Springer Science and Business Media LLC, 2020.
-
Abstract
- Trapped neutral atoms have become a prominent platform for quantum science, where entanglement fidelity records have been set using highly-excited Rydberg states. However, controlled two-qubit entanglement generation has so far been limited to alkali species, leaving the exploitation of more complex electronic structures as an open frontier that could lead to improved fidelities and fundamentally different applications such as quantum-enhanced optical clocks. Here we demonstrate a novel approach utilizing the two-valence electron structure of individual alkaline-earth Rydberg atoms. We find fidelities for Rydberg state detection, single-atom Rabi operations, and two-atom entanglement surpassing previously published values. Our results pave the way for novel applications, including programmable quantum metrology and hybrid atom-ion systems, and set the stage for alkaline-earth based quantum computing architectures.<br />ISM and JPC contributed equally to this work
- Subjects :
- Atomic Physics (physics.atom-ph)
FOS: Physical sciences
General Physics and Astronomy
Quantum entanglement
Electron
01 natural sciences
Physics - Atomic Physics
010305 fluids & plasmas
symbols.namesake
0103 physical sciences
Physics::Atomic and Molecular Clusters
Quantum metrology
Physics::Atomic Physics
010306 general physics
Quantum information science
Quantum computer
Condensed Matter::Quantum Gases
Physics
Quantum Physics
Quantum Gases (cond-mat.quant-gas)
Rydberg atom
Rydberg formula
symbols
Rydberg state
Atomic physics
Quantum Physics (quant-ph)
Condensed Matter - Quantum Gases
Subjects
Details
- ISSN :
- 17452481 and 17452473
- Volume :
- 16
- Database :
- OpenAIRE
- Journal :
- Nature Physics
- Accession number :
- edsair.doi.dedup.....e60c6774d024f6c6ed84594497383256