基于金刚石氮-空位色心自旋系综与超导量子电路混合系统的量子节点纠缠

量子纠缠是实现量子计算和量子通信的核心基础,本文提出了在金刚石氮-空位色心(NV centers)自旋系综与超导量子电路耦合的混合系统中实现两个分离量子节点之间纠缠的理论方案.在该混合系统中,把金刚石NV centers自旋系综和与之耦合的超导共面谐振器视为一个量子节点,两个量子节点之间通过一个空的超导共面谐振器连接.具有较长相干时间的NV centers自旋系综作为一个量子存储器,用于制备、存储和发送量子信息;易于外部操控的超导量子电路可执行量子逻辑门操作,快速调控量子信息.为了实现两个分离量子节点之间的纠缠,首先对系统的哈密顿量进行正则变换,将其等价为两个NV centers自旋系综与同一个超导共面谐振器之间的JC耦合;然后采用NV centers自旋-光子混合比特编码的方式,通过调节超导共面谐振器的谐振频率,精确控制体系演化时间,高保真度地实现了两个分离量子节点之间的量子纠缠.本方案还可以进一步扩展和集成,用于构建多节点纠缠的分布式量子网络.     

High-spin states and signature inversion studies in 110Ag

The high-spin states of ¹¹⁰Ag were populated via fusion evaporation reaction ¹¹⁰Pd(⁷Li, 2p2n)¹¹⁰Ag and a new level scheme has been presented. The systematics of signature splitting and signature inversion of the πg_9/2⊙νh_11/2 configuration band in Ag isotopes are studied. The spin of inversion point decreases with increasing neutron number and this feature is explained as due to the competition between the p-n residual interaction and the Coriolis force.     

Magnetic rotation in 106Ag

The high spin states of ¹⁰⁶Ag were populated via the fusion-evaporation reaction ¹⁰⁰Mo(¹¹B,5n)¹⁰⁶Ag at a beam energy of 60 MeV. A new level scheme of ¹⁰⁶Ag is presented. The positive parity band based on the configuration of πg_9/2⊙ν[h²_11/2(g_7/2/d_5/2)] is assigned to magnetic rotation band of shears mechanism. Theoretical calculation of the effective interaction on the basis of TAC mode were also performed, the calculated results agrees well with the value extracted from the experiment.     

Signature splitting in 129Ce

The high spin states of ¹²⁹Ce have been populated via heavy-ion fusion evaporation reaction ⁹⁶Mo (³⁷Cl, 1p3n) ¹²⁹Ce. The γ-γ coincidence and intensity balance used to measure the B(M1; I→I-1)/B(E2; I→I-2) (the probability ratio of the dipole and quadrupole transition) in ν7/2[523] rotational band of ¹²⁹Ce. And the energy splitting (Δe′) has been got through the experimental Routhians. The lifetimes and quadrupole moments Q_t have been extracted from the lineshape analyses using DSAM. The deformation of the ν7/2[523] rotational band of ¹²⁹Ce was extracted from the Q_t and moment of inertia J_RR.     

Structural evolution of the intruder band in ~(118)Sn

Excited states of the positive-parity intruder band in ¹¹⁸Sn have been studied via the ¹¹⁶Cd(⁷Li, 1p4n) reaction at ⁷Li energy of 48 MeV using techniques of in-beam γ-ray spectroscopy. This intruder band has been observed up to 7187 keV with spin (16⁺). The structural evolution of this intruder band with increasing angular momentum has been discussed in terms of the aligned angular momentum and the ratio of the E-Gamma Over Spin (E-GOS) curve.     

Band Structures of the Nucleus 129Cs

High-spin states in ^129Cs are populated via the ^122Sn （^11B, 4n） reaction at beam energies of 55 and 60MeV. Two additional bands are placed in the level scheme and the previously known bands are extended to higher spins. The results are compared to the cranked shell model calculations and to the systematics of the adjacent Cs isotpoes. One of the new bands is interpreted as the 7-vibrational band built on the πh11/2 orbital. The possible configuration for another new band is discussed. Upbend caused by （Vh11/2）^2 alignment is observed both in the favored and unfavored sequences of the πh11/2 configuration. The band based on the πgτ/2 configuration at low spins forks around spin 17//2, and the two different S-bands are attributed to （Vh11/2）^2 and （πh11/2）^2 rotational alignments, respectively.     

Intermittency in 3.7 A GeV ^16O-emulsion interactions

The intermittency effect has been studied for an interaction of 3.7 A GeV ^16O with emulsion using the distributions of both the pseudorapidity intervals and the azimuthal angle intervals of the shower particles emitted in a central rapidity region. The scaled factorial moments, reduced scaled factorial moments and multifractal moments as functions of the bin size in pseudorapidity and in azimuthal angle have been calculated and have revealed the presence of an intermittent behaviour which may be due to the random cascading property of the reaction. The anomalous fractal dimension has been found to increase with the increase of rank of the moment.     

前瞻性护理干预对脑出血术后患者便秘的影响

目的分析前瞻性护理干预对脑出血术后患者便秘的影响。方法选取万载县人民医院2014年1月—2015年1月收治脑出血患者66例,分为两组,对照组用常规护理,研究组用前瞻性护理干预,分析护理后对患者便秘的影响。结果护理后,研究组并发症发生率,与对照组有统计学意义(P0.05)。结论前瞻性护理干预能够有效缓解脑出血术后患者便秘发生率,具有较高的临床应用价值。     

利血平与玫瑰精B的高灵敏显色反应及分析应用

研究了利血平与玫瑰精B的显色反应,建立了测定利血平的高灵敏分光光度法。在酸性条件下,利血平的水解产物和玫瑰精B形成具有正、负吸收峰的红色离子缔合物,最大正吸收波长位于490 nm,最大负吸收波长位于520 nm,表观摩尔吸光系数(ε)分别为1.20×105L.mol-1.cm-1(正吸收)和1.83×105L.mol-1.cm-1(负吸收),利血平在0～5.0μg/mL范围内遵从比尔定律。若采用正、负峰叠加测定,灵敏度可达3.00×105L.mol-1.cm-1。探讨了适宜的反应条件、主要分析特性及方法的精密度和可靠性。该法可用于市售利血平注射液中利血平含量的测定。     

Lifetime measurements in chiral nucleus 130Cs

The level lifetimes in partner bands of ¹³⁰Cs have been measured using the Doppler Shift Attenuation method. The high-spin states of ¹³⁰Cs were populated via fusion evaporation reaction ¹²⁴Sn(¹¹B, 5n)¹³⁰Cs at a beam energy of 65 MeV. The absolute M1 and E2 transition probabilities have been deduced. The results indicate that the partner bands of ¹³⁰Cs manifest the chiral properties.