Identification of a possible proton two-quasiparticle band in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:mi mathvariant="normal">Sm</mml:mi><mml:mprescripts /><mml:none /><mml:mn>158</mml:mn></mml:mmultiscripts></mml:math>

Wang, E. H.; Hamilton, J. H.; Ramayya, A. V.; Hwang, J. K.; Liu, S. H.; Brewer, N. T.; Luo, Y. X.; Rasmussen, J. O.; Zhu, S. J.; Ter-Akopian, G. M.; Oganessian, Yu. Ts.

doi:10.1103/physrevc.90.067306

Cited by 11 publications

(22 citation statements)

References 14 publications

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“…Under the balance condition, the reflection coefficient r = F p /(F p + 2) increases with the raise of the Purcell factor F P (see Figure 5a). Without considering the photon loss due to the absorption and scattering of the linearoptical elements, and the inefficiency of the detectors, the efficiencies of the CNOT and Toffoli gates can be directly calculated to be η CNOT = |r | 4 η Toffoli = |r | 6 (21) and the results versus the Purcell factor F P are shown in Figure 5b. From Figure 5b, one can see that the efficiencies increase with the raise of F P , which is exactly consistent with our theoretical analysis.…”

Section: Discussion and Summarymentioning

confidence: 99%

“…[19] Thus, it is important to implement the Toffoli gate in a simple and efficient way rather than resorting to CNOT and single-qubit gates, and many related works have been reported in recent years. [20][21][22][23][24][25][26] Semiconductor quantum-dot (QD) spins hold great promise in quantum information science and technology, especially for solid-state quantum information processing (QIP) and quantum computing. [27][28][29][30] QD-confined electron spins can be used to store and process quantum information due to the long electron-spin coherence time and desirable optical properties, and the experimental feasibility of this system has been well established in the past decades.…”

Section: Introductionmentioning

confidence: 99%

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High‐Fidelity Universal Quantum Controlled Gates on Electron‐Spin Qubits in Quantum Dots Inside Single‐Sided Optical Microcavities

et al. 2019

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Semiconductor quantum‐dot (QD) spins hold great promise in quantum information science and technology. The implementation of high‐fidelity quantum gates on QD‐spin qubits is of great importance. Here, two schemes are presented to implement two universal quantum controlled gates, that is, the two‐qubit controlled‐not gate and the three‐qubit Toffoli gate, on stationary electron‐spin qubits in QDs inside single‐sided optical microcavities, based on the cavity‐assisted photon scattering under the balance condition. Compared with the previous schemes based on the ideal giant circular birefringence, the present schemes use the balance condition of the single‐sided QD‐cavity system, which can be achieved in both the weak‐ and strong‐coupling regimes of cavity quantum electrodynamics. Under the balance condition, the noise caused by the unbalanced reflectance between the coupled and uncoupled QD‐cavity systems can be efficiently depressed, so that the fidelity of each quantum gate operation can be increased to unity in principle. The schemes exhibit the possibility of realizing high‐fidelity and scalable quantum computing with single QD spins and single photons using the feasible and robust light–matter quantum interface. These high‐fidelity quantum controlled gates can lead to more efficient construction of quantum circuits for quantum computing, and provide a convenient avenue for quantum networking.

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Section: Discussion and Summarymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

High‐Fidelity Universal Quantum Controlled Gates on Electron‐Spin Qubits in Quantum Dots Inside Single‐Sided Optical Microcavities

et al. 2019

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“…PSM [13,49] has been successfully applied for studying the structure of high-spin states, such as tilted rotation in the A≈ 180 mass region [50], multi-quasiparticle configurations [51,52] and multiple dipole bands [53,54]. Angular-momentum projection is performed for each K configuration and the mixing among states with different K values is calculated by diagonalizing the shell model Hamiltonian in the projected basis.…”

Section: Psm Calculationsmentioning

confidence: 99%

Diversity of shapes and rotations in the γ-soft 130Ba nucleus: First observation of a t-band in the A = 130 mass region

et al. 2019

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Several new bands have been identified in 130 Ba, among which there is one with band-head spin 8 + . Its properties are in agreement with the Fermi-aligned νh 2 11/2 , 7/2 − [523] ⊗ 9/2 − [514] Nilsson configuration. This is the first observation of a two-quasiparticle t-band in the A=130 mass region. The t-band is fed by a dipole band involving two additional h 11/2 protons. The odd-spin partners of the proton and neutron S-bands and the ground-state band at high spins are also newly identified. The observed bands are discussed using several theoretical models, which strongly suggest the coexistence of prolate and oblate shapes polarized by rotation aligned two-proton and two-neutron configurations, as well as prolate collective rotations around axes with different orientations. With the new results, 130 Ba presents one of the best and most complete sets of collective excitations that a γ-soft nucleus can manifest at medium and high spins, revealing a diversity of shapes and rotations for the nuclei in the A = 130 mass region.

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“…The experimental data are taken from Refs. [4,8,9,11,12,52,53]. The results with ε 6 = 0 are displayed to examine the high-order deformation effect.…”

Section: Band Headmentioning

confidence: 99%

“…The experimental data are taken from Refs. [4,8,11,12,52,53]. states are mainly gained from the enlarged Z = 62 energy gap of the single proton Nilsson levels with non-zero ε 6 (see Fig.…”

Section: Band Headmentioning

confidence: 99%

Insight into nuclear midshell structures by studying K isomers in rare-earth neutron-rich nuclei

He¹,

Li²

2018

Phys. Rev. C

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Inspired by the newly discovered isomeric states in the rare-earth neutron-rich nuclei, high-K isomeric states in neutron-rich samarium and gadolinium isotopes are investigated within the framework of the cranked shell model (CSM) with pairing correlation treated by a particle-numberconserving (PNC) method. The experimental multi-particle state energies and moments of inertia are reproduced quite well by the PNC-CSM calculations. A remarkable effect from the high-order deformation ε6 is demonstrated. Based on the occupation probabilities, the configurations are assigned to the observed high-K isomeric states. The lower 5 − isomeric state in 158 Sm is preferred as the two-proton state with configuration π 5 2 + [413]⊗π 5 2 − [532]. More low-lying two-particle states are predicted. The systematics of the electronic quadrupole transition probabilities, B(E2) values along the neodymium, samarium, gadolinium and dysprosium isotopes and N = 96, 98, 100, 102 isotones chains is investigated to reveal the midshell collectivities. * hext@nuaa.edu.cn arXiv:1808.03945v1 [nucl-th] 12 Aug 2018The rare-earth neutron-rich nuclei lie in the midshell region between the closed shells of proton Z = 50, 82 and neutron N = 82, 126. The high spin spectroscopy of these nuclei can provide important insights into the midshell collectivity, changes in nuclear shape and deformed sub-shells in a less-explored single-particle spectrum region. Furthermore, the pygmy rare-earth peak at A ∼ 160 of the r−process abundance is believed to arise from strong midshell nuclear deformation [1,2]. The nuclear structure inputs of the rare-earth nuclei can lead to an improved understanding of the r−process nucleosynthesis [3]. However, due to their neutron excess, detailed structure informations are very difficult to be revealed by the experiment in these rare-earth neutron-rich nuclei.The recent experimental progresses in the neutron-rich A = 150 − 170 region [4][5][6][7][8][9][10][11][12][13] are attributed to a great extent to the existence of the nuclear isomeric state. A nucleus can be "traped" in an aligned spin orientation relative to its symmetric axis to form the K isomeric state (or K-isomer), where K is a quantum number representing the projection of the total nuclear spin along the symmetry axis of the nucleus. K-isomer arises from the multi-particle state, of which the transition to a lower energy state with a different K value is inhibited by the ∆K ≤ λ selection rule where λ is the multipole order of the transition. However, symmetry-breaking processes make these transitions possible to process with the ∆K − λ related hindrance factor [14,15]. The multi-particle state is formed by breaking pairs of nucleon. The excitation energy and configuration of multi-particle state depend strongly on the position of the specific single-particle orbitals near the Fermi surface and correlations, such as pairing. K-isomer appears only in axially symmetric deformed nuclei well away from the closed shell. This implies that K-isomer cannot be a pure intrinsi...

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Identification of a possible proton two-quasiparticle band inSm158

Cited by 11 publications

References 14 publications

High‐Fidelity Universal Quantum Controlled Gates on Electron‐Spin Qubits in Quantum Dots Inside Single‐Sided Optical Microcavities

High‐Fidelity Universal Quantum Controlled Gates on Electron‐Spin Qubits in Quantum Dots Inside Single‐Sided Optical Microcavities

Diversity of shapes and rotations in the γ-soft 130Ba nucleus: First observation of a t-band in the A = 130 mass region

Insight into nuclear midshell structures by studying K isomers in rare-earth neutron-rich nuclei

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Identification of a possible proton two-quasiparticle band inSm158

Cited by 11 publications

References 14 publications

High‐Fidelity Universal Quantum Controlled Gates on Electron‐Spin Qubits in Quantum Dots Inside Single‐Sided Optical Microcavities

High‐Fidelity Universal Quantum Controlled Gates on Electron‐Spin Qubits in Quantum Dots Inside Single‐Sided Optical Microcavities

Diversity of shapes and rotations in the γ-soft 130Ba nucleus: First observation of a t-band in the A = 130 mass region

Insight into nuclear midshell structures by studying K isomers in rare-earth neutron-rich nuclei

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Product

Resources

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Diversity of shapes and rotations in the γ-soft 130Ba nucleus: First observation of a t-band in the A = 130 mass region