Superconductivity in noncentrosymmetric 
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Yoshida, Hiroyuki; Okabe, Hirotaka; Matsushita, Yoshitaka; Isobe, Masaaki; Takayama‐Muromachi, E.

doi:10.1103/physrevb.95.184514

Cited by 12 publications

(17 citation statements)

References 39 publications

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“…In the present work, strontium Rydberg atoms are created in a tightly-collimated beam through laser-induced multiphoton excitation. The (crossed) laser beams employed are tightly focused to define a small excitation volume whose linear dimensions, ∼ 50µm, are less than the blockade radius, R b ∼ 100µm at n ∼ 300 [25]. Production of a Rydberg atom in this volume thus suppresses further excitation until the atom has traveled ∼ 100µm in the beam direction which, given the mean velocity of atoms in the strontium beam,v ∼ 4 × 10 2 m s −1 , typically requires ∼ 250 ns.…”

Section: Experimental Methodsmentioning

confidence: 99%

“…Recent work [24,25] in this laboratory has shown that even at very-high-n, n ≥ 300, it is possible to observe dipole blockade in a hot strontium atomic beam by using tightly-focused laser beams to create a localized excitation volume and that the blockade radius is large, ∼ 100µm. Such blockade can be exploited to generate a string of Rydberg atoms (see Fig.…”

Section: Introductionmentioning

confidence: 99%

“…The model requires as input parameters the blockade radius and the ionization cross section. We employ the blockade radius that was derived previously for n ∼ 300 1 F 3 states by solving the time-independent Schrödinger equation [25]. The collisional ionization cross section is calculated using a CTMC code [28].…”

Section: Introductionmentioning

confidence: 99%

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Destruction of high- n ( n∼300 ) Rydberg atoms in Rydberg-Rydberg collisions

et al. 2019

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The destruction of high-n, n ∼ 300, strontium atoms contained in a hot atomic beam through Rydberg-Rydberg collisions is examined. The Rydberg atoms are initially created, under blockade conditions, in a localized volume and their subsequent motions lead to creation of a string of Rydberg atoms. The Rydberg atoms, however, are formed with a thermal distribution of velocities resulting in Rydberg-Rydberg collisions which lead to their destruction. The experimental data are interpreted using classical trajectory Monte Carlo techniques that simulate the excitation of the Rydberg atoms together with their subsequent motions. Using calculated collisional ionization cross sections and blockade radii, the model yields results in good agreement with experiment. The results highlight the important role collisional destruction can play when attempting to study (long-range) Rydberg-Rydberg interactions in a hot atomic beam.

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Section: Experimental Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Destruction of high- n ( n∼300 ) Rydberg atoms in Rydberg-Rydberg collisions

et al. 2019

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“…One remarkable observation in strongly interacting systems is the reduction of the classification of topological phases in the presence of correlations; the classification of topological phases changes due to strong correlations [10][11][12][13] . Other interesting examples are socalled topological Kondo insulators [14][15][16][17][18][19] , which are topologically nontrivial f -electron materials including strong correlations in the f -orbital.…”

Section: Introductionmentioning

confidence: 99%

Magnetic states in a three-dimensional topological Kondo insulator

2018

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We theoretically study the magnetic phase diagram of a three-dimensional topological Kondo insulator by means of real-space dynamical mean field theory. We find that ferromagnetically ordered states become stable upon hole doping. Besides a wide ferromagnetic phase, we observe surface magnetism close to half-filling, which corresponds to an A-type antiferromagnetic state. We further study the impact of the magnetism on the symmetry protected surface states and find that depending on the surface and the magnetization direction, surface states are still protected by reflection symmetry present in our model. The symmetry protected surface states are shifted away by the magnetization from their original high symmetry momenta in the Brillouin zone. Remarkably, due to the magnetization, the surface states are deformed, resulting in the appearance of arcs in the momentum resolved spectrum.

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“…Second, this gate set allows certain transversal implementations of fault-tolerant universal quantum computation using topological error correction codes. Transversality means that, in order to perform gates on the encoded logical qubits, one can apply corresponding gates to the physical qubits in a parallel fashion, and this convenience has sparked recent interest on this gate set [9][10][11][12][13][14]. Third, the manybody entangled states generated by the CCZ gates are known as hypergraph states in entanglement theory [15][16][17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Changing the circuit-depth complexity of measurement-based quantum computation with hypergraph states

2019

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While the circuit model of quantum computation defines its logical depth or "computational time" in terms of temporal gate sequences, the measurement-based model could allow totally different temporal ordering and parallelization of logical gates. By developing techniques to analyze Pauli measurements on multi-qubit hypergraph states generated by the Controlled-Controlled-Z (CCZ) gates, we introduce a deterministic scheme of universal measurement-based computation. In contrast to the cluster-state scheme where the Clifford gates are parallelizable, our scheme enjoys massive parallelization of CCZ and SWAP gates, so that the computational depth grows with the number of global applications of Hadamard gates, or, in other words, with the number of changing computational bases. A logarithmic-depth implementation of an N -times Controlled-Z gate illustrates a novel trade-off between space and time complexity.

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Superconductivity in noncentrosymmetric Ag2Pd3S

Cited by 12 publications

References 39 publications

Destruction of high- n ( n∼300 ) Rydberg atoms in Rydberg-Rydberg collisions

Destruction of high- n ( n∼300 ) Rydberg atoms in Rydberg-Rydberg collisions

Magnetic states in a three-dimensional topological Kondo insulator

Changing the circuit-depth complexity of measurement-based quantum computation with hypergraph states

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