Science – Page 103

Beyond Quantum Mystery: A Deterministic Root

19.11.2025 by pricpr

New research suggests that the bizarre behavior of the quantum world may not be fundamentally probabilistic, but rather an emergent property of simple, deterministic interactions.

Squeezing More Out of Entanglement: Weak Measurements Boost Quantum Precision

19.11.2025 by pricpr

Researchers have discovered a method to amplify the non-classical properties of entangled light states using carefully timed measurements, paving the way for more sensitive quantum sensors.

Untangling Quantum Links: How Decomposition Reveals Entanglement

19.11.2025 by pricpr

A new review details how the Schmidt decomposition provides a powerful method for characterizing and quantifying entanglement in quantum systems.

Beyond Hermiticity: Preserving Quantum Criticality

19.11.2025 by pricpr

$The non-Hermitian XY model exhibits distinct phases-ferromagnetic ($(\mathrm{Re}\lambda)^{2}+(\mathrm{Im}\lambda)^{2}/\gamma^{2}<1$), paramagnetic ($|\mathrm{Re}\lambda|>1$), and glassy ($(\mathrm{Re}\lambda)^{2}+(\mathrm{Im}\lambda)^{2}/\gamma^{2}>1$ and $\mathrm{Re}\lambda<1$)-defined by the complex parameter $\lambda$, with the transition between the ferromagnetic and paramagnetic states occurring at $\lambda=1$.$

New research reveals that the robust quantum phase transitions seen in standard quantum systems can be maintained even when transitioning to non-Hermitian frameworks.

Twisted Spins: Exploring Skyrmions for Robust Quantum Computing

18.11.2025 by pricpr

$The simulated evolution of a skyrmionic qubit demonstrates that a $R_x(-\pi/2)$ rotation gate transforms an initial state of $ \ket{+i}$ into a distinct quantum state, while the same gate applied to an initial $ \ket{-i}$ state yields a different, equally defined outcome.$

Researchers are investigating the potential of skyrmionic spin textures as qubits, leveraging their unique properties for enhanced stability and control in quantum information processing.

Sculpting Quantum States with Optimized Dynamics

18.11.2025 by pricpr

$The system demonstrates that energy difference fluctuates with each iteration, reaching a critical point at $N=10$ and maximal $J$ value-$J_{max}$-suggesting a sensitivity to both iterative process and parameter magnitude.$

A new approach efficiently prepares the ground states of complex quantum systems by leveraging short-time evolution under a carefully tuned Hamiltonian.

Untangling Complexity: How Sparsity Reveals Hidden Entanglement

18.11.2025 by pricpr

The study demonstrates that entanglement dimensionality possesses a quantifiable lower bound which increases predictably with the number of frames acquired, suggesting a fundamental link between observational scope and the complexity of quantum states.

A new approach leverages the natural simplicity within complex quantum states to dramatically improve our ability to detect and characterize high-dimensional entanglement.

Woven Light: Entangling Multiple Frequency Combs for Quantum Networks

18.11.2025 by pricpr

$As nonlinear interaction length increases within a cascaded three-wave mixing system, quantum correlations emerge across the multi-pulse spectrum, initially within individual pulses and then extending between them, evidenced by correlations spanning $\pm0.75$ ps in time (resolution 0.012 ps) and $\pm32$ THz in frequency (resolution 0.52 THz).$

Researchers have demonstrated a novel approach to generating strong, broadband quantum entanglement across multiple frequency combs, paving the way for programmable quantum light sources.

Simulating Quantum Security with Laser Light

18.11.2025 by pricpr

Researchers have built a cost-effective optical setup to mimic the behavior of a six-state quantum key distribution protocol, paving the way for accessible educational tools and security testing.

Faster Cooling with Quantum Quirks

18.11.2025 by pricpr

New research reveals how manipulating quantum dynamics can accelerate the cooling of systems, defying conventional thermal expectations.