Deterministic generation of concatenated graph codes from quantum emitters

• URL: http://arxiv.org/abs/2406.16684v1
• Date: Mon, 24 Jun 2024 14:44:23 GMT
• Title: Deterministic generation of concatenated graph codes from quantum emitters
• Authors: Love A. Pettersson, Anders S. Sørensen, Stefano Paesani,
• Abstract summary: Concatenation of a fault-tolerant construction with a code able to efficiently correct loss is a promising approach to achieve this. We propose schemes for generatingd graph codes using multi-photon emission from two quantum emitters or a single quantum emitter coupled to a memory. We show that these schemes enable fault-tolerant fusion-based quantum regimes in practical computation with high photon loss and standard fusion gates.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Photon loss is the dominant noise mechanism in photonic quantum technologies. Designing fault-tolerant schemes with high tolerance to loss is thus a central challenge in scaling photonic quantum information processors. Concatenation of a fault-tolerant construction with a code able to efficiently correct loss is a promising approach to achieve this, but practical ways to implement code concatenation with photons have been lacking. We propose schemes for generating concatenated graph codes using multi-photon emission from two quantum emitters or a single quantum emitter coupled to a memory; capabilities available in several photonic platforms. We show that these schemes enable fault-tolerant fusion-based quantum computation in practical regimes with high photon loss and standard fusion gates without the need for auxiliary photons.

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