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📢 New paper. 𝐐𝐆𝐏𝐔: 𝐏𝐚𝐫𝐚𝐥𝐥𝐞𝐥 𝐥𝐨𝐠𝐢𝐜 𝐢𝐧 𝐪𝐮𝐚𝐧𝐭𝐮𝐦 𝐋𝐃𝐏𝐂 𝐜𝐨𝐝𝐞𝐬. A great collaboration w/ Boren Gu, Andi Lui, Armanda Quintavalle, Xian Xu, & @jenseisert.bsky.social 𝐭𝐥𝐝𝐫; Quantum LDPC codes are an exciting architecture for fault-tolerant ... 1/n scirate.com/arxiv/2603.0...

scirate.comQGPU: Parallel logic in quantum LDPC codesQuantum error correction is critical to the design and manufacture of scalable quantum computing systems. Recently, there has been growing interest in quantum low-density parity-check codes as a resou...

Joschka Roffe

@qec.codes

quantum computation. A key challenge, however, is that compiling logic is much more difficult than in surface codes: logical operators can overlap, meaning there limited scope for executing operations in parallel. 2/n

6/3/26, 11:41 am0 reposts1 like

Joschka Roffe

@qec.codes

6 Mar

In this work we address this limitation through a code–logic co-design approach. First, we introduce a new family of codes that admits an addressable logical-qubit basis. Second, we develop a code surgery protocol that allows operations on this basis to be executed in parallel. 3/n

Joschka Roffe

@qec.codes

6 Mar

We show explicit examples where up to k/2 Pauli-product measurements can be performed simultaneously, saturating the same upper bound achieved by the surface code. The result is a single computational block that naturally supports parallel logical operations, i.e. a QGPU.