Solid State Quantum Computation and Decoherence Based on Josephson Junction View Homepage


Ontology type: schema:MonetaryGrant     


Grant Info

YEARS

2012-2014

FUNDING AMOUNT

200000 CNY

ABSTRACT

Quantum computer based on the principle of quantum mechanics to calculate, with the advantages of quantum parallel computing, its powerful function far beyond the existing classic computer. With the advantages of being easy to integrate, the solid-state quantum computing has become a frontier research field in quantum information and condensed matter physics. The quantum coherence of the superconducting device based on Josephson junction is very suitable for the preparation of quantum bits. Therefore, the use of superconducting quantum devices to achieve solid quantum computing is considered to have great potential. This project attempts to study the macroscopic quantum states of the mesoscopic circuits based on the Josephson junction, the quantum fluctuations and entanglement in the circuit, and other macro quantum effects that may arise, revealing the novel physical and quantum phenomena of such systems; And the interaction between quantum bits and the relationship between quantum bits and the environment. We find the causes and microcosmic mechanism of the noise source that causes the quasi-decoherence of quantum bits to find an effective method to reduce the noise and improve the quantum bit coherence. Experimental workers to achieve solid-state quantum bit large-scale integration and design of quantum control circuit solutions to provide some of the necessary theoretical reference. More... »

URL

http://npd.nsfc.gov.cn/projectDetail.action?pid=11147009

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