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A Grid of Squeezed Peaks Withstood Optical Loss
Finite-energy GKP states beat squeezed vacuum in the model when their envelope was broad enough, though equal photon budgets reversed the result.
Summary
Finite-energy GKP states beat squeezed vacuum in the model when their envelope was broad enough, though equal photon budgets reversed the result.
The analysis compares standard coherent-plus-squeezed-vacuum interferometers with a coherent beam paired to a finite-energy Gottesman–Kitaev–Preskill state. With a sufficiently broad envelope, the multi-peak GKP resource produced better modeled phase sensitivity even in the presence of optical loss. At equal or lower mean photon number, however, squeezed vacuum performed better because the GKP envelope narrowed. Loss eventually erased either advantage as both resources approached ordinary vacuum, making energy accounting central to the proposal.
Why it matters
Finite-energy GKP states beat squeezed vacuum in the model when their envelope was broad enough, though equal photon budgets reversed the result.
Limits and context
No additional limitation was separately recorded.
Key claims
Finite-energy GKP states beat squeezed vacuum in the model when their envelope was broad enough, though equal photon budgets reversed the result.
Evidence: source-2026-09-10-011
Sources
- arXiv preprint 2609.09227arXiv · primary research
Corrections
No corrections have been recorded for this story.