Papers

Rahul Trivedi, J. Ignacio Cirac·Sep 22, 2025

Simulating quantum dynamics on digital or analog quantum simulators often requires ``problem-to-simulator" mappings such as trotterization, floquet-magnus expansion or perturbative expansions. When the simulator is noiseless, it is well understood th...

Aksel Tacettin, Tianchen Qu, Bethany Davies +3 more·Sep 22, 2025

Protocols for distributed quantum systems commonly require the simultaneous availability of $n$ entangled states, each with a fidelity above some fixed minimum $F_{\mathrm{app}}$ relative to the target maximally-entangled state. However, the fidelity...

Daniel Quinn, Lorenzo Buffoni, Stefano Gherardini +1 more·Sep 22, 2025

Quantum denoising diffusion models have recently emerged as a powerful framework for generative quantum machine learning. In this work, we extend these models by introducing a conditioning mechanism that enables the generation of quantum states drawn...

Richard J. Murchie, Dolf Huybrechts, Aaron Strangfeld +1 more·Sep 22, 2025

Specular reflection can be problematic for the determination of the cloud thermodynamic phase for near-nadir-pointing space LIDARs. A LIDAR system biased towards the specular contribution for backscatter, if near-concurrent to a conventional LIDAR, c...

Mykhailo V. Klymenko, Thong Hoang, Hoa Nguyen +6 more·Sep 22, 2025

We present the architectural design and prototype implementation of QUT (Quantum Unit Testing), a framework for unit testing of quantum subroutines. The framework is developed with a focus on usability and simplicity, making the complex theoretical c...

A. Chakraborty, Vaibhav Katyal, B. K. Sahoo·Sep 22, 2025

High-accuracy calculations of electric dipole polarizabilities and quadrupole moments ($Θ$) of the clock states of the singly charged calcium (Ca$^+$), strontium (Sr$^+$) and barium (Ba$^+$) alkaline-earth ions are estimated by employing relativistic...

David Steiner, Yaakov Y. Fein, Gregor Meier +5 more·Sep 22, 2025

Coherent wavepacket expansion is a key component of recent proposals aiming to create non-classical states of a levitated dielectric nanoparticle. Free evolution, i.e., releasing the particle from its harmonic trapping potential and allowing its posi...

Guoying Zhang, Li Wang, Shu Chen·Sep 22, 2025

Although the homotopy-knot theory has been utilized to implement effective topological classification for non-Hermitian systems, the physical implications underlying distinct knot topologies remain ambiguous and are rarely addressed. In this work, we...

Pengfei Zhang, Shuyan Zhou, Ning Sun·Sep 22, 2025

Quantum entanglement and quantum magic are two distinct fundamental resources that enable quantum systems to exhibit complex phenomena beyond the capabilities of classical computer simulations. While quantum entanglement has been extensively used to ...

Soma Takemori, Kazuki Yamamoto, Akihisa Koga·Sep 22, 2025

Non-Hermitian (NH) quantum systems host exceptional points (EPs), where eigenstates and eigenvalues coalesce, leading to unconventional many-body phenomena absent in Hermitian systems. While NH fermionic systems with complex interactions exhibit supe...

Nouédyn Baspin·Sep 22, 2025

The lack of an energy barrier in stabilizer Hamiltonians is well known to be an indication of short thermalisation times; and serves as a simple criteria to rule out self-correction. Its applicability has recently been challenged by the discovery of ...

Liyi Li, Federico Zahariev, Chandeepa Dissanayake +3 more·Sep 22, 2025

Quantum simulations are designed to model quantum systems, and many compilation frameworks have been developed for executing such simulations on quantum computers. Most compilers leverage the capabilities of digital and analog quantum computers by re...

V. C. Vieira, F. M. de Paula·Sep 22, 2025

We analyze quantum coherence generated by non-interacting magnons in a ferromagnetic spin chain described by the isotropic Heisenberg model. The exact expression derived for the reduced density operator of an arbitrary subsystem reveals that single-s...

Chi Zhang, Mengxin Zheng, Qian Lou +1 more·Sep 22, 2025

Variational Quantum Algorithms (VQAs) are widely used in the noisy intermediate-scale quantum (NISQ) era, but their trainability and performance depend critically on initialization parameters that shape the optimization landscape. Existing machine le...

Chi Zhang, Mengxin Zheng, Qian Lou +2 more·Sep 22, 2025

Variational Quantum Eigensolvers (VQEs) are a leading class of noisy intermediate-scale quantum (NISQ) algorithms, whose performance is highly sensitive to parameter initialization. Although recent machine learning-based initialization methods have a...

Xiao-Yue Xu, Chen Ding, Wan-Su Bao·Sep 22, 2025

Measurement error mitigation (MEM) is essential for realizing reliable quantum computation. Model-free measurement error mitigation (MF-MEM) is an important class of MEM methods that employs Pauli twirling-typically with a random twirling set-to conv...

Zixu Wang, Jack Mandell, Yangyang Xu +1 more·Sep 22, 2025

Combinatorial optimization lies at the heart of numerous real-world applications. For a broad category of optimization problems, quantum computing is expected to exhibit quantum speed-up over classic computing. Among various quantum algorithms, the Q...

Zhenghao Wang, Shuo Xiong·Sep 22, 2025

In this paper, we establish structural analogies between core concepts in quantum mechanics and games. By constructing the Quantum Coin Toss on a quantum circuit, we preliminarily investigate the similarity between quantum system behavior and game be...

Kanan Anwar·Sep 21, 2025

We present a covariant framework for the quantization of the electromagnetic field in the presence of magnetic monopoles. Building on the two-potential formalism of Cabibbo and Ferrari, which treats electric and magnetic sources on equal footing and ...

Kento Taniguchi, Ke Sun, Shuqi Xu +6 more·Sep 21, 2025

We introduce an ion trap platform based on a 3D-printed micro-junction array, designed to implement quantum charge-coupled device (QCCD) architectures for large-scale quantum information processing (QIP). The integration of three-dimensionally struct...