考虑函数$f:x\to f(x),x,f(x)\in{0,1}$,则计算过程为:$U_f|x,0\rang=|x,f(x)\rang$ 由于结果仅为0或1,另外一种描述为:$P_f|x\rang=(-1)^{f(x)}|x\rang$ 两者的关系: $$U_f(|x\rang \otimes |-\rang)=(P_f\otimes I)(|x\rang \otimes |-\rang)$$ 如何构造$U_f...
Quantum computers function similarly to classical computers, but instead of bits, quantum computing uses qubits. These qubits are special systems that act like subatomic particles made of atoms, superconducting electric circuits or other systems that data in a set of amplitudes applied to both 0 and...
WASHINGTON, Sept. 18 (Xinhua) -- Engineers in the United States and Japan have developed the first hardware that could bridge the gap between classical computing and quantum computing. The study published on Wednesday in the journal Nature described the device that serves as a basis for building...
Quantum computing is computing beyond classical computing based on quantum phenomena such as superposition and entanglement. While quantum computing is still seeking its shape, its effect is seen in making magnificent strides in the field of computing bringing into bare a new dimension of computing. N...
This book is an introduction to a new rapidly developing theory of quantum computing. It begins with the basics of classical theory of computation: Turing machines, Boolean circuits, parallel algorithms, probabilistic computation, NP-complete problems, and the idea of complexity of an algorithm. The...
The authors begin with a brief description of complexity theory for classical compu- tations. Then they give a detailed presentation of the basics of quantum computing, including all known efficient quantum algorithms. The book can be used by graduate and advanced undergraduate students and by ...
In this Review, we discuss these emerging platforms in the context of applications in topological lasing, classical neuromorphic computing and quantum information processing. Key points Polariton lasers are coherent light emitters based on bosonic condensates of half-light, half-matter quasiparticles: ...
most fundamental problems in quantum computing. In my lectures, I will introduce efficient quantum algorithms for quantum Hamiltonian simulation. I will then introduce continuous-time quantum walks, as well as an example demonstrating exponential separation between quantum computing and classical computing....
Classical computing and quantum computing are different ways of solving problems using computers. In classical computing, computers process information using bits, like tiny switches that can be either on or off, representing 0s or 1s. This means classical computers can only look at one possibility...
How can classical computers and quantum computers work together? Slowly, at first. Initially, quantum computingwill be used alongsideclassical computing to solve multivariable problems. One example? Quantum computers can narrow the range of possible solutions to a finance or logistics problem, helping ...