Autonomous stabilization with programmable stabilized state

Ziqian Li (), Tanay Roy, Yao Lu, Eliot Kapit and David I. Schuster
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Ziqian Li: University of Chicago
Tanay Roy: University of Chicago
Yao Lu: University of Chicago
Eliot Kapit: Colorado School of Mines
David I. Schuster: University of Chicago

Nature Communications, 2024, vol. 15, issue 1, 1-6

Abstract: Abstract 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 μs and 0.9 μs by sequentially applying different stabilization drives. Our result is a precursor for new reservoir engineering-based error correction schemes.

Date: 2024
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DOI: 10.1038/s41467-024-51262-4

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