5 papers
Recoverable Quantum Computation: An Information-Centric Paradigm for Quantum Computing with Errors
Shengwang Du
Quantum computing promises transformative advances in computation, communication, sensing, and machine learning. Yet the realization of large-scale fault-tolerant quantum computers…
Revealing Bosonic Exchange Symmetry in Two-Photon Temporal Wavefunction
Yefeng Mei, Yue Jiang, Shengwang Du
The wavefunction of two identical bosons remains invariant under particle exchange - a fundamental quantum symmetry that underlies Bose-Einstein statistics. We report the direct ex…
Theory of Symmetry-Protected Two-Photon Coherence
Xuanying Lai, Shengwang Du, Yue Jiang
In a recent article [Phys. Rev. Lett. 133, 033601 (2024)], the coherence time of degenerate entangled photon pairs (biphotons) generated via backward spontaneous four-wave mixing i…
Observation of Subnatural-Linewidth Biphotons In a Two-Level Atomic Ensemble
Jyun-Kai Lin, Tzu-Hsiang Chien, Chin-Te Wu +4
Biphotons and single photons with narrow bandwidths and long coherence times are essential to the realization of long-distance quantum communication (LDQC) and linear optical quant…
S-QGPU: Shared Quantum Gate Processing Unit for Distributed Quantum Computing
Shengwang Du, Yufei Ding, Chunming Qiao
We propose a distributed quantum computing (DQC) architecture in which individual small-sized quantum computers are connected to a shared quantum gate processing unit (S-QGPU). The…