Papers

Xiao-Xi Yao, Yusuf Turek·Sep 29, 2025

We introduce a feasible protocol for generating non-Gaussian (nG) states via postselected von Neumann measurement for continuous-variable quantum information processing. The method uses a two-level system coupled to a Gaussian pointer state through a...

Zijian Song, Jian-Hao Zhang·Sep 29, 2025

Topological orders can be understood as spontaneous symmetry breaking of higher-form symmetries. In the non-Abelian case, the broken higher-form symmetries are notably non-invertible. In this work, we extend this framework to mixed states, where symm...

Qi Ye, Zhenhuan Liu, Dong-Ling Deng·Sep 28, 2025

Inferring nonlinear features of quantum states is fundamentally important across quantum information science, but remains challenging due to the intrinsic linearity of quantum mechanics. It is widely recognized that quantum memory and coherent operat...

Zhilong Liu, Ying Li, Zehua Tian +1 more·Sep 28, 2025

Black holes constitute nature's fastest quantum information scramblers, a phenomenon captured by gravitational analogue systems such as position-dependent XY spin chains. In these models, scrambling dynamics are governed exclusively by the hopping in...

Sobhan Ghanbari, Hoi-Kwong Lo·Sep 26, 2025

Photonic graph states are essential resources for quantum computation and communication. Deterministic emitter-based generation of graph states overcomes the scalability issues of probabilistic approaches; nonetheless, their experimental realization ...

Adam Burchardt, Jiani Fei, Dmitry Grinko +4 more·Sep 26, 2025

The quantum Schur transform has become a foundational quantum algorithm, yet even after two decades since the seminal 2005 paper by Bacon, Chuang, and Harrow (BCH), some aspects of the transform remain insufficiently understood. Moreover, an alternat...

Jonas Lammers, Laura Ares, Federico Pegoraro +4 more·Sep 26, 2025

For the ever-growing field of quantum information processing, large-scale, efficient multi-port interferometers serving as photonic processors are required. In this context, the suitability of quantum walks as the interferometric base for universal c...

Pritam Sarkar, Diptiman Sen, Arnab Sen·Sep 26, 2025

The information-geometric origin of fidelity susceptibility and its utility as a universal probe of quantum criticality in many-body settings have been widely discussed. Here we explore the metric response of quantum relative entropy (QRE), by tracin...

Nhat A. Nghiem·Sep 26, 2025

Dynamical systems appear in nearly every aspect of the physical world. As such, understanding the properties of dynamical systems is of great importance. Typically, a dynamical system is described by a system of ordinary differential equations (ODE)....

Ricard Ravell Rodríguez, Martí Perarnau-Llobet, Pavel Sekatski·Sep 26, 2025

Estimating a classical parameter encoded in the Hamiltonian of a quantum probe is a fundamental and well-understood task in quantum metrology. A textbook example is the estimation of a classical field's amplitude using a two-level probe, as described...

Lida Sun, Yifang Xu, Yilong Zhou +11 more·Sep 26, 2025

Quantum error correction (QEC) aims to mitigate the loss of quantum information to the environment, which is a critical requirement for practical quantum computing. Existing QEC implementations heavily rely on measurement-based feedback, however, con...

Jianhao M. Yang·Sep 26, 2025

We present a novel framework for quantizing constrained quantum systems in which the processes of quantization and constraint enforcement are performed simultaneously. The approach is based on an extension of the stationary action principle, incorpor...

Lu Wei·Sep 26, 2025

Relative entropy serves as a cornerstone concept in quantum information theory. In this work, we study relative entropy of random states from major generic state models of Hilbert-Schmidt and Bures-Hall ensembles. In particular, we derive exact yet e...

Christopher L. Jawetz, Zhixin Song, Spencer H. Bryngelson +1 more·Sep 25, 2025

Heat transfer involving phase change is computationally intensive due to moving phase boundaries, nonlinear computations, and time step restrictions. This paper presents a quantum lattice Boltzmann method (QLBM) for simulating heat transfer with phas...

Shozab Qasim, Jason Pollack·Sep 25, 2025

Thermal states are thermal with respect to a fixed Hamiltonian. How much information about this Hamiltonian can we ``bootstrap'' from the subsystems of a thermal state? We attack the problem by positioning it as a subspecies of the quantum marginal p...

Álvaro Yángüez, Thomas A. Hahn, Jan Kochanowski·Sep 25, 2025

Quantum information processing is limited, in practice, to efficiently implementable operations. This motivates the study of quantum divergences that preserve their operational meaning while faithfully capturing these computational constraints. Using...

Zihua Song, Lin Chen, Yongge Wang·Sep 25, 2025

Entanglement distillation is a key step in quantum information, both theoretically and practically. It has been proven that non-positive-partial transpose (NPT) entangled states of rank at most four is 1-distillable under local operation and classica...

Masahide Sasaki, Te Sun Han, Mikio Fujiwara +3 more·Sep 25, 2025

Multicast for securely sharing confidential data among many users is becoming increasingly important. Currently, it relies on duplicate-and-forward routing and cryptographic methods based on computational security. However, these approaches neither a...

Zhenhuan Liu, Zhenyu Du, Zhenyu Cai +1 more·Sep 25, 2025

We prove that the linearity and positivity of quantum mechanics impose general restrictions on quantum purification, unveiling a new fundamental limitation of quantum information processing. In particular, no quantum operation can transform a finite ...

Emanuel Dallas, Paolo Zanardi·Sep 24, 2025

In this work, we investigate the average information scrambling and nonlocal magic generation properties of random Clifford encoding-decoding circuits perturbed by local noise. We quantify these with the bipartite algebraic out-of-time order correlat...