Papers

Anton Halaski, Christiane P. Koch·Mar 2, 2026

Time-continuous quantum error correction, necessary to protect quantum information under time-dependent Hamiltonians, relies on weak continuous syndrome measurements. Implementing these measurements requires a continuous coupling among at least two q...

Brian Doolittle, Michael Cubeddu·Mar 2, 2026

Quantum networks are advancing the information technology infrastructure of society. Simulation and emulation software tools have emerged to support the design, development, and deployment of quantum networks, however, classical simulation and emulat...

Xu Xu, Han-Yu Cheng, Meng-Yun Ma +7 more·Mar 2, 2026

Generalized quantum measurements play a crucial role in quantum mechanics, and symmetric informationally complete positive operator-valued measurements (SIC POVMs) provide a powerful and flexible framework for extracting information from quantum syst...

Álvaro Pernas, Ricardo Puebla·Mar 2, 2026

The exchange of quantum information among nodes in a quantum network is one of the main challenges in modern technologies. Superconducting waveguide QED networks hold great potential for realizing distributed quantum computation, where distinct nodes...

Dong Yuanzhang, He Siwen, Deng Zhijiao +3 more·Mar 2, 2026

The quantum phonon laser state is a vibrational state generated by phonon coherent amplification based on quantum mechanics. Its core is coherent excitation and manipulation of phonon quantum states by controlling phonon dynamics. This technology bre...

Shun Umekawa, Koki Ono, Hayato Arai·Mar 2, 2026

We identify an operational principle that singles out Projection-Valued Measures (PVMs) among general Positive Operator-Valued Measures (POVMs), bridging the modern quantum measurement theory and the traditional formulation based on projective measur...

Chenyang Li, Shengxin Zhuang, Yukun Zhang +4 more·Mar 2, 2026

Efficiently characterizing large quantum states and processes is a central yet notoriously challenging task in quantum information science, as conventional tomography methods typically require resources that grow exponentially with system size. Here,...

Kaiyang Xing, Han Fang, Zhaoyun Chen +4 more·Mar 2, 2026

Recent studies show that quantum neural networks (QNNs) generalize well in few-shot regimes. To extend this advantage to large-scale tasks, we propose Q-LoRA, a quantum-enhanced fine-tuning scheme that integrates lightweight QNNs into the low-rank ad...

Stephane Dartois, Benjamin McKenna·Mar 2, 2026

In this paper, we present a technically simple method to establish upper bounds on the expected injective norm of real and complex random tensors. Our approach is somewhat analogous to the moment method in random matrix theory, and is based on a dete...

Jun-Hai Zhao, Si-Qi Du, Wen-Qiang Liu +2 more·Mar 1, 2026

High-dimensional quantum systems offer a new playground for quantum information applications due to their remarkable advantages such as higher capacity and noise resistance. We propose potentially practical schemes for remotely preparing four- and ei...

Sounak Kar, Arpan Mukhopadhyay·Mar 1, 2026

Quantum networks are envisioned to enable reliable distribution and manipulation of quantum information across distances, forming the foundation of a future quantum internet. The fair and efficient allocation of communication resources in such networ...

H. -X Luo, C. Li, J. -L. Ren +7 more·Mar 1, 2026

Single photons are the flying qubits of choice for distributing entanglement in a quantum internet. Quantum memories embedded in quantum repeaters are crucial to overcome transmission loss and enhance the rate of quantum communication. A multimode me...

James Tian·Mar 1, 2026

This paper studies multipartite observables formed from sums of local self-adjoint contractions on tensor product Hilbert spaces. The square of such a sum has a parity structure: after decomposing each local product into commutator and anticommutator...

Makoto Ishihara, Wojciech Roga, Masahiro Takeoka·Mar 1, 2026

Multipartite device-independent quantum key distribution (DI-QKD), also known as device-independent conference key agreement, enables more than two remote parties to share a common key with information-theoretic security even without trusting the dev...

Yonghae Lee, Taewan Kim·Mar 1, 2026

We present a deterministic framework for preparing an arbitrary three-qubit pure state. To leverage entanglement structure in the state-preparation task, we classify three-qubit pure states into five types with respect to a $1|2$ bipartition. Given a...

Maxwell Poster, Jason Chadwick, Jonathan Mark Baker·Feb 28, 2026

Quantum error correction (QEC) promises to exponentially suppress qubit noise, but typically assumes spatially-uniform and temporally-constant noise rates. However, real quantum hardware exhibits variation in noise levels over time, which will be amp...

Aparna Gupte, Jiahui Liu, Luowen Qian +3 more·Feb 28, 2026

One-time programs (OTPs) aim to let a user evaluate a program on a single input while revealing nothing else. Classical OTPs require hardware assumptions, and even with quantum information, OTPs for deterministic functionalities remain impossible due...

Maryam Bagherian·Feb 28, 2026

We develop a comprehensive axiomatic framework for quantum-inspired distance metrics on projective Hilbert spaces, providing a unified foundation that organizes and generalizes existing measures in quantum information theory. Starting from five funda...

Volodimir Simulik, Denys I. Bondar·Feb 27, 2026

This paper commemorates the 100th anniversary of quantum mechanics as a theoretical model of atomic phenomena. We discuss briefly the foundational contributions of Werner Heisenberg, Wolfgang Pauli, Erwin Shrodinger, and Paul Dirac to the development...

Kai-Xuan Wen, Dong-Long Hu, Shengyong Li +1 more·Feb 27, 2026

Bosonic quantum error-correcting codes encode logical information in a harmonic oscillator, with the Gottesman-Kitaev-Preskill (GKP) and number-phase (NP) codes representing two fundamentally different encoding paradigms. Although both have been exte...