Abstract Magnetic resonance wireless power transfer (WPT) has emerged as a pivotal technology for near-field electromagnetic manipulation, enabling wire-free energy delivery across diverse applications ranging from consumer electronics and implantable medical devices to electric vehicles. While near-field coupling facilitates this paradigm shift, it imposes inherent constraints: the exponential decay of coupling strength fundamentally limits transfer distance to short-to-mid ranges, and complex

Abstract By using both diagrammatic theory and Chevy ansatz approach, we derive an exact set of equations, which determines the spectral function of Fermi polarons with multiple particle-hole excitations at nonzero temperature. In the diagrammatic theory, we find out the complete series of Feynman diagrams for the multi-particle vertex functions, when the unregularized contact interaction strength becomes infinitesimal, a typical situation occurring in two- or three-dimensional free space. The

Abstract We attempt to propose the first orthogonal-state-based protocols of measurement-device-independent quantum secure direct communication and quantum dialogue employing single basis, i.e., Bell basis as decoy qubits for eavesdropping detection. Orthogonal-state-based protocols are inherently distinct from conventional conjugate-coding protocols, offering unconditional security derived from the duality and monogamy of entanglement. Noise imposes a major challenge to the efficient implement

Abstract The National Array of Neutron Detectors (NAND) at IUAC is one of the big detector arrays used in experiments to study nuclear fission through the measurement of the neutrons emitted during the process. The array is installed at IUAC heavy ion accelerator facility. NAND consists of 100 liquid scintillators mounted on a semi-spherical geometry covering a total of 3.3\(\%\) of 4\(\pi\) solid angle. The 175-cm-long flight path provides good energy resolution of the emitted neutrons, enabli

The originally private notes below were posted in March 2022, for the purpose to make them available to interested parties in a public-domain way, and not intended to be submitted for publications [1]. As such, it was the first publication exploring interplay between altermagnetism and superconductivity. The editors of this Special Issue suggested to use it as a brief introduction; this make sense from the history point of view, so it is being published here in an unaltered form, and no attempt

Abstract Non-equilibrium dynamics have become a central research focus, exemplified by the counterintuitive Mpemba effect where initially hotter systems can cool faster than colder ones. Studied extensively in both classical and quantum regimes, this phenomenon reveals diverse and complex behaviors across different systems. This review provides a concise overview of the quantum Mpemba effect (QME), specifically emphasizing its connection to symmetry breaking and restoration in closed quantum ma

Abstract The study of strongly correlated electron systems remains a fundamental challenge in condensed matter physics, particularly in two-dimensional (2D) systems hosting various exotic phases of matter including quantum spin liquids, unconventional superconductivity, and topological orders. Although Density Matrix Renormalization Group (DMRG) has established itself as a pillar for simulating one-dimensional quantum systems, its application to 2D systems has long been hindered by the notoriou

Superconductivity (SC) arises when electrons form Cooper pairs that move collectively without resistance. In the weak-coupling regime, this pairing is described by the Bardeen-Cooper-Schrieffer (BCS) theory, where electrons form weakly bound, overlapping Cooper pairs. In the opposite, strong-coupling limit, electrons form tightly bound bosonic pairs that undergo Bose–Einstein condensation (BEC). The smooth evolution between these two regimes—the BCS-BEC crossover—has been extensively studied in

RIKEN, Hirosawa 2–1, Wako, 351–0198, Japan. Quantum spin liquids (QSLs)—exotic magnetic states where electron spins remain disordered even at absolute zero—have long fascinated physicists for their rich entanglement and potential to host exotic quasiparticles [27,28,29]. Yet, the challenge has always been in stabilizing and probing such states in real materials. Molecular solids offer a clean platform with two-dimensional triangular lattices, which can be an ideal system to host QSLs. Two candi

1Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, China 2School of Physical Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China Two-dimensional (2D) materials, starting with the groundbreaking exfoliation of graphene in 2004, have initiated the “2D Age” and transformed the landscape of fundamental research and technological advances in condensed-matter physics, materials science, and beyond [