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Asymmetric blockade and multi-qubit gates via dipole-dipole interactions

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arxiv 2006.02486 v1 pith:NQS6DGA4 submitted 2020-06-03 quant-ph physics.atom-ph

classification quant-phphysics.atom-ph
keywords gatesinteractionsmulti-qubitasymmetricblockademanyqubitsrydberg
verification ladder T0 review T1 audit T2 compute T3 formal
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Due to their strong and tunable interactions, Rydberg atoms can be used to realize fast two-qubit entangling gates. We propose a generalization of a generic two-qubit Rydberg-blockade gate to multi-qubit Rydberg-blockade gates which involve both many control qubits and many target qubits simultaneously. This is achieved by using strong microwave fields to dress nearby Rydberg states, leading to asymmetric blockade in which control-target interactions are much stronger than control-control and target-target interactions. The implementation of these multi-qubit gates can drastically simplify both quantum algorithms and state preparation. To illustrate this, we show that a 25-atom GHZ state can be created using only three gates with an error of 7.8%.

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Cited by 1 Pith paper

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. High-Fidelity Microwave-Polarization Control in a Rydberg-Ensemble Experiment

    physics.atom-ph 2025-08 accept novelty 6.0 of 10

    A chamber-matrix calibration using spin-resolved Rydberg-EIT spectroscopy lets the authors synthesize σ−, π, and σ+ microwave polarizations with >99% fidelity in a reflective chamber, extended off-resonance by two-pho...

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