MIT researchers have used ultrathin materials to build superconducting qubits that are at least one-hundredth the size of conventional designs and suffer from less interference between neighboring qubits. This advance could improve the performance of quantum computers and enable […]
Researchers used the 2D material hexagonal boron nitride to build much smaller capacitors for superconducting qubits, enabling them to shrink the footprint of a qubit by two orders of magnitude without sacrificing performance. Read More […]
Within the field of spintronics, devices based on the interaction between spin and heat flow have emerged as a potential candidate for new thermoelectric devices (devices which convert heat to electricity). “Magnons,” quanta of spin […]
npj Quantum Information, Published online: 27 January 2022; doi:10.1038/s41534-022-00521-7 Optimal control of stimulated Raman adiabatic passage in a superconducting qudit
npj Quantum Information, Published online: 27 January 2022; doi:10.1038/s41534-022-00516-4 How to build Hamiltonians that transport noncommuting charges in quantum thermodynamics
npj Quantum Information, Published online: 27 January 2022; doi:10.1038/s41534-022-00519-1 A two-way photonic quantum entanglement transfer interface
npj Quantum Information, Published online: 27 January 2022; doi:10.1038/s41534-021-00514-y Xor-And-Inverter Graphs for Quantum Compilation
Recently, magnons (units of electron spin excitation waves) have been considered for information processing. Especially, utilizing thermally excited energetic magnons have been of interest. In parallel, the demand for faster and energy-efficient electronic devices has […]
Quantum researchers have dramatically reduced the time to simulate an optical quantum computer, with a speedup of around one billion over previous approaches. Quantum computers promise exponential speedups for certain problems, with potential applications in […]
Physicists at MIT have discovered a new qubit, in the form of vibrating pairs of atoms known as fermions. The new qubit appears to be extremely robust, able to maintain superposition between two vibrational states, […]
Researchers in the United Kingdom and the Netherlands decided to explore two very different quantum problems: breaking the encryption of Bitcoin and simulating the molecule responsible for biological nitrogen fixation. The team has especially described […]
A physicist has proposed a radical solution to the question of how a charged particle, such as an electron, responded to its own electromagnetic field. This question has challenged physicists for over 100 years but […]
Researchers decided to explore two very different quantum problems: breaking the encryption of Bitcoin and simulating the molecule responsible for biological nitrogen fixation. They describe a tool they created to determine how big a quantum […]
Researchers at the Hong Kong University of Science and Technology (HKUST) have demonstrated a new way to control the quantum state through the loss of particle. This process is usually avoided in the quantum devices. This […]
Researchers have demonstrated a new way to control the quantum state through the loss of particles — a process that is usually avoided in the quantum device, offering a new way towards the realization of […]
Chinese scientists have implemented twin-field quantum key distribution (QKD) through an 833-km optical fiber, setting a new world record in the field. The system has tolerated a channel loss beyond 140 dB. Furthermore, the optimized four-phase […]
Álvaro Gómez León (Institute of Fundamental Physics, Madrid):The topology of non-hermitian systems has recently gained a lot of attention due to its possible use in amplification, sensing or laser physics.
npj Quantum Information, Published online: 21 January 2022; doi:10.1038/s41534-021-00509-9 Rate-compatible multi-edge type low-density parity-check code ensembles for continuous-variable quantum key distribution systems
Scientists have boosted the efficiency and scalability of perovskite solar cells by replacing their electron-transport layers with a thin layer of quantum dots. Read More Quantum Computers News — ScienceDaily
By shaking an optical lattice potential, researchers have realized a discontinuous phase transition in a strongly correlated quantum gas, opening the door to quantum simulations of false vacuum decay in the early universe. Read More […]
Researchers at PSI have compared the electron distribution below the oxide layer of two semiconductors. The investigation is part of an effort to develop particularly stable quantum bits — and thus, in turn, particularly efficient […]
npj Quantum Information, Published online: 20 January 2022; doi:10.1038/s41534-021-00501-3 Designing quantum networks using preexisting infrastructure
Researchers have achieved a key milestone toward the development of a fault-tolerant quantum computer. They were able to demonstrate a two-qubit gate fidelity of 99.5 percent — higher than the 99 percent considered to be […]
Australian researchers have proven that near error-free quantum computing is possible, paving the way to build silicon-based quantum devices compatible with current semiconductor manufacturing technology. Prof. Morello’s paper is one of three published today in Nature that […]
A precision diagnostic is emerging as a gold standard for detecting and describing problems inside quantum computing hardware. Read More Quantum Computers News — ScienceDaily