【摘 要】
：
We propose a quantum state sharing scheme for continuous variables using bright two-mode squeezed stateand single-mode squeezed state light. The squeezing of a
【机 构】
：
The State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Opto-electronics
论文部分内容阅读
We propose a quantum state sharing scheme for continuous variables using bright two-mode squeezed stateand single-mode squeezed state light. The squeezing of a single-mode state is applied to enhance the securityof information in quantum teleportation network. The signal-to-noise ratio of communication and the fidelitybetween the secret and reconstruction state are analysed. It is shown that both the receivers of Bob and Charliecannot extract information with a high signal-to-noise ratio because of the large noise come from the otherquadrature component of single mode squeezed state. Anyone of Bob and Charlie can retrieve the quantum statewith a high signal-to-noise ratio if and only if the other one cooperates with the measurement.
其他文献
随着现代教育思想的深入、课堂教学改革的不断深化，在课堂教学活动中“学生是学习的主体，要充分发挥学生的主体性”这一观点已成为广大教师的共识。在教学中，我们应该重视那些影响学生主动参与的因素，创设条件，积极培养学生的参与意识，引导学生参与教学全过程，给学生更多的自主学习机会，从而使学生的能力得到提高，潜能得到开发。 一、营造参与氛围，激发参与兴趣 宽松和谐的氛围和师生的情感的投入是学生主动
英语课程具有人文性和工具性的特点,英语课程承载着培养学生基本英语素养和发展学生思维品质的重要任务.随着新课改的深入发展,英语课程目标也从专注学生综合语言运用能力转
Cubic boron nitride is synthesized by the reaction of Li3N and B2O3 under high pressure and high temperature (4.0-5.0 GPa, 1350-1500℃). The minimum pressure of
The highest occupied molecular orbital (HOMO) of trifluorobromomethane (CF3Br) is studied by binary (e, 2e)electron momentum spectroscopy. The experimental mome
When a black hole radiates particles, it losses energy and shrinks, the horizon contracts from its original radius to a new smaller radius. This leads to the se
在新课程改革下,各学科的教育都需要进行一定的改革,以满足新课程标准的要求.英语是高中生需要学习的一门基础课程,而写作是高中英语中重要的教学内容,高中英语教师自然需要
A high-quality two-dimensional polystyrene photonic crystal is fabricated by the method of focused ion beam etching. The scanning electron microscopy (SEM) and
A theoretical model is established to simulate the penetration process of C20 clusters in oxides (Al2Os, SiO2) at different incident velocities.
We present a high-quality Ni/Ag/Pt Ohmic contact to p-type GaN. After the sample is annealed at 500℃ in O2 ambient for 3min, a specific contact resistance as l
小学英语作为小学教育体系中一门重要基础学科,作为一种外来语言,使得很多学生在实际学习过程中往往会感到有所困难和难理解,久而久之,不仅会大大降低学生的英语学习兴趣,同