activity
20242026
most citedFat-Tree QRAM: A High-Bandwidth Shared Quantum Random Access Memory for Parallel Queries

2 citations · 4 across the 12 of their papers we have counts for

collaborators
Showing 2026Show all

7 papers · 1 filter

quant-ph2026

Error-Corrected QRAM Queries with One-Fault-Tolerant \texttt{CSWAP} Gates

Shifan Xu, Connor T. Hann, Nathan Wiebe +2

Quantum random-access memory (QRAM) enables coherent queries to classical data. However, the \(O(N)\) qubits required for a memory with \(N=2^n\) addresses make QRAM appear vulnera…

quant-ph2026

Asymptotically Optimal Depth Fermionic Permutation on 2D Grid Quantum Architecture without Ancillas

Dantong Li, Shifan Xu, Yongshan Ding

Simulating fermionic systems on qubit hardware involves many nonlocal interactions, and efficient routing of these interactions is critical to the overall cost of fermionic simulat…

quant-ph2026

Assessing System Capabilities and Bottlenecks of an Early Fault-Tolerant Bicycle Architecture

Kun Liu, Ben Foxman, Gian-Luca R. Anselmetti +1

Early modular fault tolerant quantum computers remain constrained by costly inter-module communication and limited magic state factory service. Understanding such bottlenecks and i…

quant-ph2026

Co-Designing Error Mitigation and Error Detection for Logical Qubits

Rohan S. Kumar, Takahiro Tsunoda, Sophia H. Xue +3

Near-term quantum workloads demand error management, yet the two lightest-weight techniques, Quantum Error Detection (QED) and Probabilistic Error Cancellation (PEC), have compleme…

quant-ph2026

Efficient Routing of Quantum LDPC Codes on Programmable 2D Toric Architectures

Kun Liu, Takahiro Tsunoda, Sophia H. Xue +5

Quantum low-density parity-check codes are promising candidates towards scalable fault-tolerant quantum computation. Among these, bivariate bicycle (BB) codes offer superior encodi…

quant-ph2026

In-Situ Simultaneous Magic State Injection on Arbitrary CSS qLDPC Codes

Kun Liu, Shifan Xu, Tomas Jochym-O'Connor +3

Quantum low-density parity-check (qLDPC) codes can encode many logical qubits within a single code block at low physical qubit overhead, yet magic state injection into such codes r…

quant-ph2026

Distilling Magic States in the Bicycle Architecture

Shifan Xu, Kun Liu, Patrick Rall +2

Magic State Distillation is considered to be one of the promising methods for supplying the non-Clifford resources required to achieve universal fault tolerance. Conventional MSD p…