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Bath engineering, which utilizes coupling to lossy modes in a quantum systemto generate non-trivial steady states, is a tantalizing alternative to gate-and measurement-based quantum science. Here, we demonstrate dissipativestabilization of entanglement between two superconducting transmon qubits in asymmetry-selective manner. We utilize the engineered symmetries of thedissipative environment to stabilize a target Bell state; we furtherdemonstrate suppression of the Bell state of opposite symmetry due to parityselection rules. This implementation is resource-efficient, achieves asteady-state fidelity $\mathcal{F} = 0.70$, and is scalable to multiple qubits.

Stabilizing entanglement via symmetry-selective bath engineering in superconducting qubits