Papers

Ignacio González, Ángel Rivas·Jan 9, 2026

We investigate the emergence of cooperative radiation phenomena in ensembles of two-level atoms coupled to a lossy resonant cavity beyond the Markovian and mean-field approximations. By deriving a complete analytical solution for the two-emitter case...

Diego Tancara, Herbert Díaz-Moraga, Dardo Goyeneche·Jan 9, 2026

Among variational quantum algorithms designed for NISQ devices, ADAPT-VQE stands out for its robustness against barren plateaus, particularly in estimating molecular ground states. On the other hand, counterdiabatic algorithms have shown advantages i...

Gabriele Bressanini, Yue Ma, Hyukjoon Kwon +1 more·Jan 9, 2026

Analogue quantum simulators offer a promising route to explore quantum many-body dynamics beyond classical reach in the near term. However, their vulnerability to noise limits the accuracy of simulations. Here, we establish a new framework for mitiga...

F. H. B. Somhorst, J. Saied, N. Kannan +14 more·Jan 9, 2026

Photonic quantum computers use the bosonic statistics of photons to construct, through quantum interference, the large entangled states required for measurement-based quantum computation. Therefore, any which-way information present in the photons wi...

Hsuan-Cheng Wu, Xiantao Li·Jan 9, 2026

We present a universal framework for simulating $N$-dimensional linear Itô stochastic differential equations (SDEs) on quantum computers with additive or multiplicative noises. Building on a unitary dilation technique, we establish a rigorous mapping...

Lorenzo Cirigliano, Valentina Brosco, Claudio Castellano +3 more·Jan 9, 2026

The distribution of entanglement between the nodes of a quantum network plays a fundamental role in quantum information applications. In this work, we investigate the dynamics of a network of qubits where each edge corresponds to an independent two-q...

Vinod K Mishra·Jan 9, 2026

It is very important to understand if a qutrit can be visualized in a 3-dimensional Bloch sphere. In this work, a mathematical model for performing this operation is presented.

Sevilay Sevinçli, Dennis Rätzel, Markus Krutzik +2 more·Jan 9, 2026

We propose and analyze a scheme to generate squeezed light by storing a classical probe pulse in a Bose--Einstein condensate (BEC) and exploiting the nonlinear evolution caused by atom--atom collisions during the storage time. A $Λ$-type optical memo...

Darren W. Moore, Vojtěch Švarc, Kratveer Singh +5 more·Jan 9, 2026

Sub-Planck structures in non-Gaussian probability densities of phase space variables are pervasive in bosonic quantum systems. They are almost universally present if the bosonic system evolves via nonlinear dynamics or nonlinear measurements. So far,...

Stefano Longhi·Jan 9, 2026

We investigate the spontaneous emission of a two-level system coupled to a photonic waveguide, showing that dynamical dephasing in the photon modes profoundly alters the decay law. In the absence of dephasing, the emitter displays conventional expone...

Frieder Lindel, Stefan Yoshi Buhmann, Andreas Buchleitner +1 more·Jan 9, 2026

The rate of $m$-photon transitions in matter, induced by an incident light field, depends on the field's $m$th order coherence function. Consequently, the coherence properties of the light field may be shaped to increase the rate of multi-photon tran...

Wassil Sennane, Jérémie Messud·Jan 9, 2026

We propose an analysis of the Quantum Phase Estimation (QPE) algorithm applied to many-electron systems by investigating its free parameters such as the time step, number of phase qubits, initial state preparation, number of measurement shots, and ot...

Sigmund Kohler, Jesús Casado-Pascual·Jan 9, 2026

We investigate the Floquet spectrum of a detuned, driven two-level system and show that it exhibits exact quasienergy crossings when the detuning is an integer multiple of the energy quantum of the driving field. This behavior can be explained by a h...

Mostafizur Rahaman Laskar·Jan 9, 2026

We propose a quantum distance measure between probability distributions encoded in quantum states based on the fragility of quantum interference under entangling evolution. The Quantum Interference-Induced Bhattacharyya Distance (QIBD) is defined thr...

Niclas Schillo, Andreas Sturm, Rüdiger Quay·Jan 9, 2026

The Quantum Singular Value Transformation (QSVT) provides a powerful framework with the potential for quantum speedups across a wide range of applications. Its core input model is the block encoding framework, in which non-unitary matrices are embedd...

Hsin-Pin Lo, Kai Asaoka, Hiroki Takesue·Jan 9, 2026

High-visibility quantum interference between independent photons is essential for demonstrating multi-photon quantum information processing, and it is closely linked to the spectral purity of correlated photon pairs. In this study, we investigate two...

Ángel L. Corps, Sebastián Gómez, Pavel Stránský +2 more·Jan 9, 2026

We investigate thermalization and the quantum-classical correspondence in the collective Bose-Hubbard model, focusing on the four-site case. Our analysis of the classical phase-space structure and its excited-state quantum phase transitions leads us ...

Huan Zhang, Guofu Yin, Ying Xia +3 more·Jan 9, 2026

We investigate the simultaneous estimation of two optical phases in a three-mode interferometer assisted by optical parametric amplification (OPA). By employing the normally ordered characteristic-function formalism, we analytically obtain all photon...

Yu Wu, Qianli Zhou, Jie Geng +2 more·Jan 9, 2026

Multimodal learning aims to enhance perceptual and decision-making capabilities by integrating information from diverse sources. However, classical deep learning approaches face a critical trade-off between the high accuracy of black-box feature-leve...

Kiryang Kwon, Jae-yoon Choi·Jan 9, 2026

Spontaneous pattern formation out of homogeneous media is one of the well-understood examples of hydrodynamic instabilities in classical systems, which naturally leads to the question of its manifestation in quantum fluids. Bose-Einstein condensates ...