英文演讲---量子计算机.pptx

Quantum computer Classic computer model  --- Turing machine The model of the above Turing machine is irreversible. For example, for Turing machine operation write storage unit - left one frame, the inverse becomes left one by one - write storage unit, which is no longer an effective Turing machine operation. Moores Law 摩尔定律 The flaws of traditional computers Irreversible operation caused by loss of freedom, inevitably produce heat loss - energy consumption According to the Heisenberg uncertainty relationship, the uncertainty of the electronic position is very small, the uncertainty of the momentum will be great. Electrons are no longer bound, there will be quantum interference effects, this effect will even destroy the function of the chip - Moores Law limit The principle of quantum computation量子计算的原理 From a physical point of view, the computer is a physical system. The calculation process is a physical process. Quantum computer is a quantum mechanics system, quantum computing process is the quantum mechanics system within the quantum state of the evolution process. Because quantum states have quantum superposition and quantum entanglement properties. So that quantum computing has many characteristics different from the classic calculation. Quantum entanglement量子纠缠 Even if the distance is distant, the behavior of a particle will affect the state of the other. When one of t hem is manipulated (for example, a quantum measurement) and the state changes, the other will instantly change the state. Quantum logic gate量子逻辑门 The operation performed by the quantum logic gate can be represented by a unitary matrix. The operation of a single bit can be represented by a 4 (2 * 2) matrix, and the operation of the two bits is represented by a 16( 4 * 4) matrix. Adama door The Adama door is the door that operates only one qubit. Can b