Papers

Henry Ma, Anand Natarajan·Sep 29, 2025

We introduce a basis-restricted variant of the Quantum-k-SAT problem, in which each term in the input Hamiltonian is required to be diagonal in either the standard or Hadamard basis. Our main result is that the Quantum-6-SAT problem with this basis r...

Karl C. Linne, Sho Uemura, Yue Ji +5 more·Sep 29, 2025

Quantum detectors of single photons are an essential component for quantum information processing across computing, communication and networking. Today's quantum detection system, which consists of single photon detectors, timing electronics, control...

Gang Liu, Gen Li, Rong-Can Yang +2 more·Sep 29, 2025

Preparing magnon nonclassical states is a central topic in the study of quantum magnonics. Here we propose to generate magnon squeezed states in a hybrid cavity-magnon-qubit system by engineering an effective Rabi-type magnon-qubit interaction. This ...

Poramet Pathumsoot, Michal Hajdušek, Rodney Van Meter·Sep 29, 2025

While the Graybox characterization method allows for implicit noise models and is platform-agnostic, the method lacks uncertainty quantification. Characterization of quantum devices is a crucial process that enables researchers to gain insight from e...

Ming-Da Huang, Zhan-Feng Jiang, M. Hunza +6 more·Sep 29, 2025

In the continuous-wave Detection and Ranging technology, simultaneous and accurate range and velocity measurements of an unknown target are typically achieved using a frequency-modulated continuous wave (FMCW) with a heterodyne receiver. The high tim...

Abyan Khabir Irfan, Chansu Yu·Sep 29, 2025

Running quantum circuits on quantum computers does not always generate "clean" results, unlike on a simulator, as noise plays a significant role in any quantum device. To explore this, we experimented with the Quantum Approximate Optimization Algorit...

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...

Hideyuki Ozawa, Isamu Kudo, Yuki Takeuchi +1 more·Sep 28, 2025

Quantum error correction would be a primitive for demonstrating quantum advantage in a realistic noisy environment. Floquet codes are a class of dynamically generated, stabilizer-based codes in which low-weight parity measurements are applied in a ti...

Reuben Tate, Swati Gupta·Sep 28, 2025

There is a strong interest in finding challenging instances of NP-hard problems, from the perspective of showing quantum advantage. Due to the limits of near-term NISQ devices, it is moreover useful if these instances are small. In this work, we iden...

Peyman Najafi, Aarón Villanueva, Hilbert Kappen·Sep 28, 2025

The Path integral Quantum Control (PiQC) algorithm was recently introduced by Villanueva et al. (2025) as a new approach for computing optimal controls in open and closed quantum systems. Originally proposed for pulse-based quantum control, PiQC esti...

Sumit Nandi·Sep 28, 2025

In the present paper, a novel framework to detect genuine multipartite entanglement (GME) has been presented by computing correlations in mutually unbiased bases (MUBs). It has been shown that correlation obtained by measuring in MUBs of all bisepara...

Lucas Sourrouille·Sep 28, 2025

In this note, we care to study the degeneracy of the zero modes for a spin-$1/2$ charged particle in a one-dimensional space. We analyze the arguments proposed by Aharonov and Casher in a two-dimensional space. In two dimensions the zero energy state...

Ram Band, Siegfried Beckus·Sep 28, 2025

The spectra of the Kohmoto model give rise to a fractal phase diagram, known as the Kohmoto butterfly. The butterfly encapsulates the spectra of all periodic Kohmoto Hamiltonians, whose index invariants are sought after. Topological methods - such as...

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...

Elliot John Fox, Taysa Mendes de Mendonça, Ferdinand Schmidt-Kaler +1 more·Sep 28, 2025

Nth-root gates allow for a paced application of two-qubit operations. We apply them in quantum thermodynamic protocols for operating a quantum heat engine. A set of circuits for two and three qubits are compared by considering maximum work production...

Xin Chen·Sep 28, 2025

Nonlinear optics underpins quantum photonics by enabling the generation and control of quantum states of light. We present new applications of optical resonators as mode selectors in nonlinear processes. First, we show that cavity-enhanced spontaneou...

Shi Hu, Meiqing Hu, Zhoutao Lei·Sep 28, 2025

Topological boundary states exhibit distinctive properties, including unidirectional propagation and noise robustness, which hold significant potential for advancing the performance of quantum science and technology. Here, we demonstrate the implemen...

Hubert J. Jóźwiak, Dimitar Bakalov, Michał Przybytek +2 more·Sep 28, 2025

We present the first fully ab initio calculations of collision-induced broadening and shift of spectral lines in antiprotonic helium ($\bar{p}$He$^{+}$) perturbed by atomic helium. To overcome critical limitations of previous studies, we construct a ...

Yang Ji, Yongjin Ye, Qiao Wang +5 more·Sep 28, 2025

The lack of self-correcting codes hiders the development of boson sampling to be large-scale and robust. Therefore, it is important to know the noise levels in order to cautiously demonstrate the quantum computational advantage or realize certain tas...