Fault-tolerant Quantum Error Correction Using a Linear Array of Emitters
Year: 2025
Type: article
Abstract: We propose a fault-tolerant quantum error correction architecture consisting of a linear array of emitters and delay lines. In our scheme, a resource state for fault-tolerant quantum computation is generated by letting the emitters interact with a stream of photons and their neighboring emitters. Depending on the number of emitters ne , we study the effect of delay line errors in two regimes: when ne is a small constant of order unity and when ne scales with the code distance. Between these two regimes, the logical error rate steadily decreases as ne increases, from a scaling of exp(−cη−1/2) to exp(−c′η−1) , where η is the error rate per unit length in the delay line, for some constants c,c′>0 . We also carry out a detailed study of the break-even point and the fault-tolerance overhead. These studies suggest that the multi-emitter architecture, using the state-of-the-art delay lines, can be used to demonstrate error suppression, assuming other sources of errors are sufficiently small.
Source: Quantum
Authors: Jintae Kim, Jung Hoon Han, Isaac H. Kim
Institutions: Sungkyunkwan University, University of California, Davis
Language: English
Subfield: Artificial Intelligence
Field: Computer Science
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $215
OpenAlex ID: W4408888829