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Physics

Driven-dissipative entanglement of distant giant atoms

Aziza Almanakly et al.

Featured June 27, 2026

Original Paper

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Simply

By connecting special giant atoms to a shared wire, researchers can use a constant signal to force the atoms into a shared, protected state, creating stable entanglement across a distance.

In depth
The authors propose a method to generate remote entanglement between giant artificial atoms by exploiting correlated dissipation in a waveguide-quantum electrodynamics (wQED) architecture. By engineering the interference between multiple coupling points of each atom, they create a system where a continuous drive stabilizes a protected dark state, which is then isolated from waveguide decay by tuning the qubit frequencies to a subradiant point.

Key Takeaways

  • 1
    The paper demonstrates the use of giant atoms to enable tunable, frequency-dependent dissipation in a waveguide.
  • 2
    A single continuous-wave drive is sufficient to stabilize a Bell state through driven-dissipative dynamics.
  • 3
    The authors achieve a Bell-state fidelity of by suppressing individual dissipation after entanglement generation.

Conceptual Flow

HIGH LEVEL
1
Methodology

The researchers drive two distant atoms through a shared wire to force them into a shared entangled state.

Two atoms
Shared wire
Drive atoms to create entanglement
Entangled atoms
2
Results

The atoms stay entangled even when the drive is turned off because they are tuned to a protected frequency.

Entangled atoms
Tune frequency to protect state
Stable entangled pair