Science – PricPR

Quantum Control Reveals Hidden Phase Transitions

10.12.2025 by pricpr

$A superconducting quantum processor, housing 66 transmon qubits arranged in a $6 \times 11$ lattice-with a focused subset of 30 utilized to minimize interference-facilitates the implementation of an adaptive quantum circuit leveraging alternating layers of two-qubit entanglers and real-time measurement-feedback to navigate non-equilibrium phase transitions, demonstrated by cumulative error rates of 0.07%, 0.7%, and 1.3% for synchronized SQG, iSWAP, and mid-circuit RO operations respectively.$

Researchers have experimentally observed and distinguished two distinct types of phase transitions driven by measurement and feedback in a superconducting quantum processor.

Untangling Quantum Dynamics

10.12.2025 by pricpr

$A quantum state $|\psi\rangle$ encompassing six sites, subject to open boundary conditions, undergoes transformation via a three-layered circuit composed of two-local gates-represented as Matrix Product States-and is further analyzed through an observable $O_2O_4$, inducing projectors that, combined with contractions-projections $| \omega \rangle \langle \omega |$ on ancillary spaces-and tracing operations, reveal the underlying entanglement structure of the system.$

A new framework harnesses the power of quantum entanglement to simplify and accelerate quantum simulations.

Beyond Classical Limits: Quantum Simulators Reveal New Dynamics

10.12.2025 by pricpr

Recent advances in quantum simulation using Noisy Intermediate-Scale Quantum (NISQ) processors are pushing the boundaries of our understanding of complex quantum systems.

The Universe’s Hidden Clock: How Time and Space Might Emerge from Entanglement

10.12.2025 by pricpr

New research suggests that time and space aren’t fundamental aspects of reality, but rather emergent properties arising from quantum correlations within a closed system.

The View From Here: Quantum Reality and the Limits of Perspective

10.12.2025 by pricpr

A new analysis suggests that reality isn’t a fixed entity, but rather emerges from the observer’s frame of reference, fundamentally challenging our notions of objectivity.

Relative Realities: Reframing Quantum Measurement

10.12.2025 by pricpr

A new perspective on the Wigner’s Friend paradox proposes that quantum states are always defined relative to an observer’s frame of reference, offering a potential path toward resolving the measurement problem.

Beyond Markov: Uncovering Hidden Topology in Quantum Dissipation

10.12.2025 by pricpr

The study charted the evolution of Liouvillian eigenvalues - $λ_1$, $λ_3$, $λ_2$, and $λ_4$ - within the complex Re(λ)-Im(λ) plane, revealing their trajectories as control parameters were systematically varied along a defined circular path, thereby characterizing a hybrid topological invariant and exposing the system’s underlying dynamics.

New research reveals a unique topological invariant emerging from the interplay of quantum dissipation and non-Markovian effects in open quantum systems.

Catching Light in the Act: Tracking Quantum Leaps Between States

10.12.2025 by pricpr

$Through the analysis of a driven cavity system-characterized by parameters $g/κ=60$, $\varepsilon/κ=13.5i$, $\Delta\omega/\kappa=-8$, and $\kappa^{\prime}/\kappa=\kappa^{\prime}/g^{\prime}=100$-coherent localization emerges from a bright to an unstable state within approximately $0.106\kappa$ time units, evidenced by a dip in photon flux at $\kappa t\_{\rm dip}=6.590$ and conditioned quasiprobability distributions revealing coherent state amplitudes of approximately $1.95-5.45i$ and $-1.40+0.85i$, demonstrating a nuanced interplay between drive strength and cavity dynamics in shaping quantum state transitions.$

Researchers have developed a novel method for characterizing the statistical behavior of quantum jumps between distinct, macroscopic states of light within a cavity QED system.

Chaos Unveiled: From Quantum Uncertainty to Classical Sensitivity

09.12.2025 by pricpr

$Within a gravitational wedge at $35^{\circ}$, a stability map-derived from particle density-reveals the delicate boundary between order and chaos, where high entropy signals eigenstates spiraling into unpredictable motion and low entropy indicates regular, predictable behavior, a distinction further illuminated by corresponding density distributions and camera images that confirm the Porter-Thomas distribution for chaotic systems.$

New research reveals how the transition from quantum to classical chaos emerges in a photon gas, driven by the act of measurement itself.

Untangling Quantum Connections: A New Way to Detect Spin-Orbital Entanglement

09.12.2025 by pricpr

$Resonant inelastic X-ray scattering (RIXS) geometry was leveraged to investigate core-to-valence transitions-specifically, dipole-allowed pathways and those enhanced by crystal-field anisotropy-and subsequent quantum Fisher information (QFI) bounds, calculated both with spherically symmetric atomic orbitals and molecular orbitals from X2C-CASSCF calculations, demonstrated a polarization-dependent angular sensitivity-revealing that $π$-to-$π$ and $π$-to-$σ$ transitions exhibit distinct responses to changes in the azimuthal angle $\phi$.$

Researchers have developed a novel method using resonant inelastic X-ray scattering to identify and quantify entanglement between spin and orbital degrees of freedom in quantum materials.