Xor-And-Inverter Graphs for Quantum Compilation
npj Quantum Information, Published online: 27 January 2022; doi:10.1038/s41534-021-00514-y Xor-And-Inverter Graphs for Quantum Compilation
Diamond quantum sensor detects ‘magnetic flow’ excited by heat
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 […]
Bristol team chase down advantage in quantum race
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 […]
Vibrating atoms make robust qubits
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, […]
Quantum breaking the encryption of Bitcoin?
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 […]
Physicist solves century old problem of radiation reaction
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 […]
How big does your quantum computer need to be?
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 […]
Gaining quantum control from loss
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 […]
New way of gaining quantum control from loss
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 […]
China sets world record of long-haul quantum distribution
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 […]
Quantum Optics Seminar: Characterization of topological amplification with the path integral method.
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.
Rate-compatible multi-edge type low-density parity-check code ensembles for continuous-variable quantum key distribution systems
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
Quantum dots boost perovskite solar cell efficiency and scalability
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
Towards quantum simulation of false vacuum decay
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 […]
Towards compact quantum computers thanks to topology
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 […]
Designing quantum networks using preexisting infrastructure
npj Quantum Information, Published online: 20 January 2022; doi:10.1038/s41534-021-00501-3 Designing quantum networks using preexisting infrastructure
Scientists achieve key elements for fault-tolerant quantum computation in silicon spin qubits
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 […]
Quantum computing in silicon hits 99% accuracy
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 […]
Inner workings of quantum computers
A precision diagnostic is emerging as a gold standard for detecting and describing problems inside quantum computing hardware. Read More Quantum Computers News — ScienceDaily
Semiconductor spin qubits gain further credibility as leading platform for quantum computing
The post Semiconductor spin qubits gain further credibility as leading platform for quantum computing appeared first on QuTech.
Quantum Information & Computing Meeting: Correlations in random matrix product states
Daniel Haag (MPQ)I will define and motivate Haar-random matrix product states (RMPS)
Quantum Optics Seminar: Towards self-assembled crystals of neutral atoms based on dipole-dipole interactions
Lukas Wangler (MPQ)Trapped ions and electrons in solids can form crystals due to their repulsive interactions.
All-fiber source and sorter for multimode correlated photons
npj Quantum Information, Published online: 14 January 2022; doi:10.1038/s41534-021-00515-x All-fiber source and sorter for multimode correlated photons
Towards practical quantum computers: transmon qubit with a lifetime approaching 0.5 milliseconds
npj Quantum Information, Published online: 13 January 2022; doi:10.1038/s41534-021-00510-2 Towards practical quantum computers: transmon qubit with a lifetime approaching 0.5 milliseconds
Photon pairs are more sensitive to rotations than single photons
Quantum states of light have enabled novel optical sensing schemes, e.g., for measuring distance or position, with precisions impossible to achieve with classical light sources such as lasers. The field of quantum metrology has now […]