本文關(guān)鍵詞： 核磁共振 量子模擬 拓撲相 拓撲量子相變 拓撲量子計算　出處：《中國科學技術(shù)大學學報》2017年02期 　論文類型：期刊論文

【摘要】：拓撲相是一類不能由經(jīng)典朗道對稱破缺理論描述的奇特物質(zhì)態(tài).這種態(tài)具有一些有趣的性質(zhì),如依賴于拓撲流形的基態(tài)簡并度、準粒子分數(shù)統(tǒng)計和拓撲糾纏熵等.拓撲相的性質(zhì)研究在凝聚態(tài)物理中本身具有重要意義,如促進新型材料的發(fā)現(xiàn).另一方面,拓撲相提供了一種天然的無噪聲介質(zhì),在容錯量子計算領(lǐng)域也有著潛在的應用.然而,受限于當前苛刻的實驗條件和可控的實驗手段,在真實體系中觀測并探索拓撲相的性質(zhì)是一件困難的事情.量子模擬用一個可控的量子系統(tǒng)模擬復雜的或難以觀測的物理現(xiàn)象,為我們研究拓撲相提供了有力手段.核磁共振體系作為量子模擬的物理實現(xiàn)平臺之一,在多量子比特實驗中具有成熟的控制技術(shù)和精確的測量手段,是一個很好的測試平臺.本文首先介紹拓撲相的基本概念和性質(zhì),回顧核磁共振在量子模擬中的應用,然后討論基于該體系完成的關(guān)于拓撲相量子模擬的幾個實驗工作,最后給出總結(jié)并展望此研究領(lǐng)域的前景.
[Abstract]:Topological phase is a kind of not by the classical Landau symmetry breaking strange matter. Lack of theoretical description of this state has some interesting properties, such as harmonic depends on the topological manifold and quasi particle degree, fractional statistics and topological entanglement entropy. The topological properties of the research has important significance in condensed matter physics itself, such as to promote new materials. On the other hand, the topological phase provides a natural medium without noise, in the field of fault tolerant quantum computation has its potential applications. However, experimental means limited to experimental conditions of the current demanding and controllable, in the system and explore the real observation of nature is a topological phase difficult. Quantum simulation is complex or difficult to observe the phenomenon of quantum physics a controllable system, which provides a powerful tool for us to study the topology. The physical simulation of nuclear magnetic resonance system as the realization of quantum One of the platform, with advanced control technology and accurate measurement method in multi qubit experiment, is a good test platform. This paper first introduces the basic concepts and properties of topological phase, review the application of NMR in quantum simulation, and then discuss the complete system based on the topological quantum phase on simulation some experimental work, finally gives the summary and outlook of this research field in the future.

【作者單位】： 北京計算科學研究中心;中國科學技術(shù)大學近代物理系中國科學院微觀磁共振重點實驗室;合肥微尺度物質(zhì)科學國家實驗室量子信息與量子科技前沿協(xié)同創(chuàng)新中心;
【基金】：國家重點基礎(chǔ)研究發(fā)展(973)計劃(2013CB921801) 國家自然科學基金(11375167,11425523,11661161018) 中國科學院戰(zhàn)略先導科技專項B類(XDB01030400)資助
【分類號】：O413
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本文編號：1494532