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From the 1 of 7 linked papers with an AI index.

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7 papers

quant-ph2026

Efficient Depth--Ancilla Tradeoffs for Hamming Weight Computation and Symmetric Boolean Functions

Wei Zi, Pei Yuan, Junhong Nie +1

Hamming weight computation maps an -bit input to the number of ones it contains. It is a basic subroutine in quantum computing, and the core building block for symmetric Boolean…

cs.DS2026

Approximating the Trace Distance Between Product Quantum States

Kun He, Dimitrios Myrisiotis, Junhong Nie +1

We study the trace distance \[D_{\mathrm{tr}}(ρ,σ) =\frac12\|ρ-σ\|_1, ρ=\bigotimes_{i=1}^nρ_i,\quad σ=\bigotimes_{i=1}^nσ_i, \] when the two exponentially large states are…

quant-ph2026

Nearly optimal quantum circuits for Boolean oracles

Junhong Nie, Wei Zi

The paper presents nearly optimal trade‑offs among circuit size, depth, and ancilla count for quantum oracles implementing various classes of Boolean functions, providing asymptoti…

quant-ph2026

Scalable Multi-QPU Circuit Design for Dicke State Preparation: Optimizing Communication Complexity and Local Circuit Costs

Ziheng Chen, Junhong Nie, Xiaoming Sun +2

Preparing large-qubit Dicke states is of broad interest in quantum computing and quantum metrology. However, the number of qubits available on a single quantum processing unit (QPU…

quant-ph2025

Almost Optimal Synthesis of Reversible Function in Qudit Model

Buji Xu, Junhong Nie, Xiaoming Sun

Quantum oracles are widely adopted in problems, like query oracle in Grover's algorithm, cipher in quantum cryptanalytic and data encoder in quantum machine learning. Notably, the…

quant-ph2025

Toward Minimum Graphic Parity Networks

Yixin Cao, Yiren Lu, Junhong Nie +2

Quantum circuits composed of CNOT and are fundamental building blocks of many quantum algorithms, so optimizing the synthesis of such quantum circuits is crucial. We address…