Periodically-driven facilitated high-efficiency dissipative entanglement with Rydberg atoms

Abstract

A time-dependent periodical field can be utilized to efficiently modify the Rabi coupling of system, exhibiting nontrivial dynamics. We propose a scheme to show that this feature can be applied for speeding up the formation of dissipative steady entanglement based on Rydberg anti-blockade mechanism in a simplified configuration, fundamentally stemming from a frequency match between the external-field modulation frequency and the systematic characteristic frequency. In the presence of an optimal modulation frequency that is exactly equal to the central frequency of driving field, it enables a sufficient residence time of the two-excitation Rydberg state for an irreversible spontaneous decay onto the target state, leading to an accelerated high-fidelity steady entanglement ~0.98, with a shorter formation time <400μs. We show that, a global maximal fidelity benefits from a consistence of microwave-field coupling and spontaneous decay strengths, by which the scheme promises a robust insensitivity to the initial population distributions. This simple approach to facilitate the generation of dissipative entangled two-qubit states by using periodic drivings may guide a new experimental direction in Rydberg quantum technology and quantum information.

9 pages, 7 figures, accepted by Physical Review A

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• High-fidelity interconversion between Greenberger-Horne-Zeilinger and $W$ states through Floquet-Lindblad engineering in Rydberg atom arrays
• Dipole-dipole interaction driven antiblockade of two Rydberg atoms
• Composite pulses for high fidelity population transfer in three-level systems
• Population trapping in a pair of periodically driven Rydberg atoms
• Exponentially faster preparation of quantum dimers via driven-dissipative stabilization
• Resonant dynamics of spin cluster in a periodically driven one-dimensional Rydberg lattice
• Effective dynamics and quantum state engineering by periodic kicks
• Efficient steady state entanglement generation in strongly driven coupled qubits