Water that simply will not freeze, no matter how cold it gets — a research group has discovered a quantum state that could be described in this way. Experts have managed to cool a special material to near absolute zero temperature. They found that a central property of atoms — their alignment — did not ‘freeze’, as usual, but remained in a ‘liquid’ state. The new quantum material could serve as a model system to develop novel, highly sensitive quantum sensors.
Scientists have, for the first time, developed a quantum experiment that allows them to study the dynamics, or behavior, of a special kind of theoretical wormhole. The experiment has not created an actual wormhole (a rupture in space and time), rather it allows researchers to probe connections between theoretical wormholes and quantum physics, a prediction of so-called quantum gravity. Quantum gravity refers to a set of theories that seek to connect gravity with quantum physics, two fundamental and well-studied descriptions of nature that appear inherently incompatible with each other.
It’s easy to control the trajectory of a basketball: all we have to do is apply mechanical force coupled with human skill. But controlling the movement of quantum systems such as atoms and electrons is much more challenging, as these minuscule scraps of matter often fall prey to perturbations that knock them off their path in unpredictable ways. Movement within the system degrades — a process called damping — and noise from environmental effects such as temperature also disturbs its trajectory.
New research demonstrates a 20x improvement in resetting a quantum bit to its ‘0’ state, using a modern version of the ‘Maxwell’s demon’.
Researchers have successfully extended the quantum phase difference estimation algorithm, a general quantum algorithm for the direct calculations of energy gaps, to enable the direct calculation of energy differences between two different molecular geometries. This allows for the computation, based on the finite difference method, of energy derivatives with respect to nuclear coordinates in a single calculation.
Researchers have demonstrated a way to entangle atoms to create a network of atomic clocks and accelerometers. The method has resulted in greater precision in measuring time and acceleration.
Researchers have successfully demonstrated the transport of two-photon quantum states of light through a phase-separated Anderson localization optical fiber.
A new study illustrates how substrates affect electronic interactions in 2D metal-organic frameworks. With electronic properties tuneable by electrical charge, mechanical strain, and hybridization, such structures can be ‘switched’ off and on, allowing potential applications in future energy-efficient electronics.
Researchers at the University of Tokyo have developed highly efficient blue quantum dots using a novel bottom-up, self-organizing chemical approach, solving a critical challenge in display technology while requiring advanced “cinematic chemistry” imaging techniques to visualize the precisely structured 2.4-nanometer nanocrystals.
Australian scientists have developed a groundbreaking quantum microscope that uses atomically thin hexagonal boron nitride layers instead of traditional bulky crystals, enabling unprecedented imaging of electric currents, magnetic fields, and single molecules while simultaneously mapping temperature distributions under ambient conditions.
Researchers at the University of Groningen led by Professor Maria Antonietta Loi have successfully created a highly conductive optoelectronic metamaterial by developing a method for quantum dots to self-organize into a three-dimensional superlattice that maintains their unique optical characteristics while achieving unprecedented electron mobility.
Computing power of quantum machines is currently still very low. Increasing it is still proving to be a major challenge. Physicists now present a new architecture for a universal quantum computer that overcomes such limitations and could be the basis of the next generation of quantum computers soon.
Researchers at the University of Tokyo developed two hybrid quantum systems—an electron-superconducting circuit and an electron-ion coupled system—that successfully demonstrated control over trapped electrons’ temperature and movement, potentially solving key limitations in qubit stability for quantum computing.
A research team has developed an efficient method to measure high-dimensional qudits (advanced versions of qubits that can hold more information and are more noise-resistant) encoded in quantum frequency combs on a single optical chip, marking a significant advancement for quantum networks and communication systems.
A groundbreaking collaboration between the University of Michigan and the University of Regensburg has captured electron movement at the attosecond scale (one quintillionth of a second) using a novel two-pulse light system, potentially enabling quantum computing speeds up to a billion times faster than current capabilities while providing crucial insights into many-body physics.
Physicists have discovered how to switch topological states on and off in a strongly correlated metal using magnetic fields, a breakthrough made possible by the collective behavior of electrons that dramatically amplifies the material’s response to external magnetic fields and could enable new applications in quantum computing and sensor technology.
researchers at Tampere University discovered that quantum light behaves differently from classical light when focused, exhibiting an accelerated Gouy phase anomaly that not only contributes to the ongoing debate about fundamental optical phenomena but also promises enhanced precision in distance measurements.
Researchers have engineered a record number of six, silicon-based, spin qubits in a fully interoperable array. Importantly, the qubits can be operated with a low error-rate that is achieved with a new chip design, an automated calibration procedure, and new methods for qubit initialization and readout.
This research demonstrates a groundbreaking implementation of three-qubit Fredkin and Toffoli gates on a programmable quantum photonic chip, overcoming previous limitations of pre-entangled input states and bulk optics systems by using controlled Mach-Zehnder interferometers to enable independent input photons, marking a significant advance toward scalable quantum processors.
The researchers developed MBP (Memory-effect Belief Propagation), an enhanced version of traditional belief propagation that incorporates memory effects and neural network-like inhibition functionality, enabling efficient decoding of highly degenerate quantum error-correcting codes with significantly improved performance, achieving error thresholds of 16% and 17.5% for surface and toric codes respectively.
esearchers have developed a differentiable, gradient-based optimization method that jointly optimizes both quantum device design parameters and control protocols in a unified framework, demonstrating its effectiveness on superconducting qubit systems.
Researchers theoretically demonstrate how spin-orbit coupled Bose-Einstein condensates in optical cavities can generate topological optical transparencies with Dirac cones and edge-like states, potentially advancing quantum computation through enhanced light-matter interactions that exhibit phase transitions controllable via Raman detuning and atomic damping.
A novel architecture has been proposed for implementing high-fidelity deterministic quantum logic gates using photonic qubits that are dual-rail encoded.
Scientists have presented a contraction strategy that makes use of the exact light cone structure of the tensor network representing the observables.
Researchers demonstrated a novel method to generate and control one-way quantum steering between photon and magnon modes in a non-Hermitian cavity magnonic system by leveraging the cooperative effects of coherent and dissipative coupling, achieving robust quantum correlations that can be precisely controlled through the relative phase of cooperative dissipation and magnon mode frequency detuning.