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5 papers · 2 filters
Geometric vs. Dynamical Gates in Quantum Computing Implementations Using Zeeman and Heisenberg Hamiltonians
Yu Shi
Quantum computing in terms of geometric phases, i.e. Berry or Aharonov-Anandan phases, is fault-tolerant to a certain degree. We examine its implementation based on Zeeman coupling…
Quantum criticality of the Lipkin-Meshkov-Glick Model in terms of fidelity susceptibility
Ho-Man Kwok, Wen-Qiang Ning, Shi-Jian Gu +1
We study the critical properties of the Lipkin-Meshkov-Glick Model in terms of the fidelity susceptibility. By using the Holstein-Primakoff transformation, we obtain explicitly the…
Fidelity susceptibility, scaling, and universality in quantum critical phenomena
Shi-Jian Gu, Ho-Man Kwok, Wen-Qiang Ning +1
We study fidelity susceptibility in one-dimensional asymmetric Hubbard model, and show that the fidelity susceptibility can be used to identify the universality class of the quantu…
Variable-frequency-controlled coupling in charge qubit circuits: Effects of microwave field on qubit-state readout
Xiao-Ling He, Yu-xi Liu, J. Q. You +1
To implement quantum information processing, microwave fields are often used to manipulate superconuducting qubits. We study how the coupling between superconducting charge qubits…
Deterministic generation of large cluster states using non-deterministic collective measurements based on quantum Zeno effect
Xiang-bin Wang, J. Q. You, Franco Nori
We propose a method to generate large cluster states without using conditional (e.g., CNOT, C-phase) gates. Indeed, an arbitrarily large cluster state can be generated and expanded…