Science Daily November 16, 2020 A team of researchers in the US (Western Washington University, UC Santa Barbara, University of Michigan, NYCity University) has developed a quantum algorithm that uses quantum gates acting on neighboring qubits in a quasi-one-dimensional setting and its circuit depth is linear in the number of qubits. They identified correlation functions that serve as signatures of the Laughlin state and discussed how to obtain them on a quantum computer. Application of the algorithm provides tools to improve quantum computing devices. The algorithm opens a new venue to use the new quantum devices to study problems which […]
Tag Archives: Quantum algorithm
Scientists develop first quantum algorithm to characterize noise across large systems
EurekAlert August 10, 2020 Ability to build large-scale quantum computers depends on the ability to characterize quantum noise reliably and efficiently with high precision. An international team of researchers (Australia, USA – Yale University, Canada) has developed a protocol and implemented it in a 14-qubit superconducting quantum architecture. They show how to construct a quantum noise correlation matrix allowing the easy visualization of correlations between all pairs of qubits, enabling the discovery of long-range two-qubit correlations in the 14-qubit device. Their results pave the way for noise metrology in next-generation quantum devices, calibration in the presence of crosstalk, and customized […]
How a new quantum approach can develop faster algorithms to deduce complex networks
EurekAlert March 3, 2020 Complex networks form the basis of various applications in virtually all fields of science. To analyze and manipulate these networks, specific “search” algorithms are required. But conventional search algorithms are slow and, when dealing with large networks, require a long computational time. To develop more efficient quantum algorithms researchers in Japan performed numerical simulations on some basic fractal lattices to try to find out the relationship between the number of vertices and the optimal computational time in a quantum walk search. They confirmed that the scaling law for some fractal lattices varied according to their spectral […]