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Autonomous stabilization with programmable stabilized state
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DOI：10.1038/s41467-024-51262-4.png)
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Abstract
En 中文
Reservoir engineering is a powerful technique to autonomously stabilize a quantum state. Traditional schemes involving multi-body states typically function for discrete entangled states. In this work, we enhance the stabilization capability to a continuous manifold of states with programmable stabilized state selection using multiple continuous tuning parameters. We experimentally achieve 84.6% and 82.5% stabilization fidelity for the odd and even-parity Bell states as two special points in the manifold. We also perform fast dissipative switching between these opposite parity states within 1.8 mu s and 0.9 mu s by sequentially applying different stabilization drives. Our result is a precursor for new reservoir engineering-based error correction schemes. Dissipative quantum state stabilization allows to protect entanglement against environmental noise, but requires complex Hamiltonian engineering which makes it hard to tune to different, arbitrary states. Here, the authors propose and demonstrate a scheme which allow to stabilize arbitrary quantum state from a continuous set, including maximally entangled states.
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