A groundbreaking experimental study validates both the previously tested quadratic (D2 + V2 ≤ 1) and theoretically predicted linear forms of wave-particle duality relations through asymmetric beam interference and photon polarization measurements, revealing that the quadratic form yields more path information and advancing our understanding of these fundamental quantum principles.
Single-electron conveyor-mode shuttling in Si/SiGe quantum channels demonstrates 99.42% fidelity using only four control signals independent of distance, enabling scalable quantum computing architectures by solving the signal-fanout problem in connecting dense qubit registers.
The research proposes a novel scheme for generating scalable quantum entanglement using ultracold atoms in optical superlattices, where atoms are sequentially entangled in double wells and then reconfigured through lattice phase shifts, resulting in a noise-resistant genuine multipartite entangled state suitable for practical quantum computing implementations.
Scientists have discovered that in quantum systems, certain patterns of entanglement between parts of a system can reveal additional entanglement relationships not directly observed, proving this phenomenon exists for both small and large quantum systems and characterizing specific conditions under which it occurs.
Quantum coherence in diamond-based NV centers, crucial for quantum computing applications, faces limitations from decoherence effects. This study examines how nitrogen impurities (P1 centers) impact NV-spin coherence using cluster correlation expansion and density functional theory. Results show T2 varies linearly with P1 concentrations (log scale, -1.06 slope), matching experimental data. The Jahn-Teller effect and hyperfine interactions significantly influence decoherence dynamics. These findings establish theoretical T2 limits across P1 densities, guiding material optimization for quantum devices.
Zurich Instruments offers Quantum Computing researchers a fast track to unleashing the power of parametric amplification for qubit readout. While being critical to achieve the high measurement speed and low error rates needed for quantum […]
Researchers at Simon Fraser University have made a crucial breakthrough in the development of quantum technology. They have observed over 150,000 silicon ‘T centre’ photon-spin qubits, an important milestone that unlocks immediate opportunities to construct […]
Researchers from LMU and Saarland University have entangled two quantum memories over a 33-kilometer-long fiber optic connection — a record and an important step toward the Quantum Internet. This is the longest distance so far […]
A finite length ferromagnetic chain with opposite spin polarization imposed at its two ends is one of the simplest frustrated spin models. In the clean classical limit the domain wall inserted on account of the […]
Researchers studied the unique spectral structure of laser noise and introduced a metric that determines when a stabilised laser source has been optimised for quantum control of atomic qubits. Technical noise present in laser systems […]
Researchers propose a quantum router architecture comprising many quantum memories connected in a photonic switchboard to broker entanglement flows across quantum networks.
Physicists at the University of Basel, Switzerland, have now developed a network node for quantum communication networks that can store single photons in a vapor cell and pass them on later. In quantum communication networks, […]
A team of quantum computer physicists at UNSW Sydney has engineered a quantum processor at the atomic scale to simulate the behavior of a small organic molecule, solving a challenge set some 60 years ago […]
Scientists at the University of Exeter and the University of Sheffield have made a pivotal new breakthrough in the quest to control light to evolve the next generation of quantum sensing and computing. They have […]
A new review investigates the search of Majorana fermions in iron-based superconductors. The elusive Majorana fermion, or ‘angel particle‘ simultaneously behaves like a particle and an antiparticle — and surprisingly remains stable rather than being […]
Researchers at Paderborn University have developed a new technology for manipulating light that can be used as a basis for future optical quantum computers. New optical elements for manipulating light will allow for more advanced […]
Scientists at EPFL, Switzerland, have built a compact waveguide amplifier by successfully incorporating rare-earth ions into integrated photonic circuits. The device produces record output power compared to commercial fiber amplifiers, a first in the development […]
A team of researchers has proposed a deterministic hybrid protection scheme utilizing strong but feasible interactions with two-level ancillas immune to spontaneous emission. They have verified the robustness of the scheme against the dephasing of qubit ancilla.
P-computers are powered by probabilistic bits (p-bits), which interact with other p-bits in the same system. Unlike the bits in classical computers, which are in a 0 or a 1 state, or qubits, which can […]
A team of physicists at University of Colorado and NIST demonstrated that it could read out the signals from a type of qubit called a superconducting qubit using laser light, and without destroying the qubit […]
Researchers at Duke University and the University of Maryland have used the frequency of measurements on a quantum computer to get a glimpse into the quantum phenomena of phase changes. By measuring the number of […]
Researchers working in the EU-funded PHOQUSING project are developing a hybrid computational system based on cutting-edge integrated photonics that combines classical and quantum processes. Project partner QuiX Quantum in the Netherlands has created the largest […]
To overcome the limitations of current quantum computers, researchers at Pacific Northwest National Laboratory (PNNL) are developing simulations that provide a glimpse into how quantum computers work.
Superconductors are used in a wide range of domains, from medical applications to a central role in quantum computers. Superconductivity is caused by specially linked pairs of electrons known as Cooper pairs. So far, the […]
A team of researchers from Xanadu and the NIST is claiming that their quantum computer, Borealis, has achieved computational advantage in taking on the boson sampling challenge. The researchers took on the challenge using a […]