【摘要】：光子系統(tǒng)在量子信息處理和傳輸過程中有非常重要的應(yīng)用.譬如,利用光子與原子(或人工原子)之間的相互作用,可以完成信息的安全傳輸、存儲和快速的并行計(jì)算處理等任務(wù).光子系統(tǒng)具有多個(gè)自由度,如極化、空間模式、軌道角動量、時(shí)間-能量、頻率等自由度.光子系統(tǒng)的多個(gè)自由度可以同時(shí)應(yīng)用于量子信息處理過程.超并行量子計(jì)算利用光子系統(tǒng)多個(gè)自由度的光量子態(tài)同時(shí)進(jìn)行量子并行計(jì)算,使量子計(jì)算具有更強(qiáng)的并行性,且需要的量子資源少,更能抵抗光子數(shù)損耗等噪聲的影響.多個(gè)自由度同時(shí)存在糾纏的光子系統(tǒng)量子態(tài)稱為超糾纏態(tài),它能夠提高量子通信的容量與安全性,輔助完成一些重要的量子通信任務(wù).在本綜述中,我們簡要介紹了光子系統(tǒng)兩自由度量子態(tài)在量子信息中的一些新應(yīng)用,包括超并行量子計(jì)算、超糾纏態(tài)分析、超糾纏濃縮和純化三個(gè)部分.
[Abstract]:Photonic system has a very important application in quantum information processing and transmission. For example, by using the interaction between photons and atoms (or artificial atoms), the secure transmission of information, storage and fast parallel computing can be completed. The photonic system has many degrees of freedom, such as polarization, spatial mode, orbital angular momentum, time-energy, frequency and so on. Multiple degrees of freedom of photonic systems can be applied to quantum information processing at the same time. Superparallel quantum computing uses multiple degrees of freedom of photons to carry out quantum parallel computation at the same time, which makes quantum computing have stronger parallelism, needs less quantum resources, and can resist the influence of noise such as photonic number loss. The quantum states of photonic systems with multiple degrees of freedom entangled at the same time are called superentangled states, which can improve the capacity and security of quantum communication and assist in the completion of some important quantum communication tasks. In this review, we briefly introduce some new applications of two-degree-of-freedom quantum states in photonic systems in quantum information, including hyperparallel quantum computing, hyperentanglement analysis, hyperentanglement concentration and purification.
【作者單位】： 北京師范大學(xué)物理學(xué)系;
【基金】：國家自然科學(xué)基金(批準(zhǔn)號:11474026)資助的課題~~
【分類號】：TP338.6;O413
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本文編號：2525778