Zobrazeno 1 - 10
of 333
pro vyhledávání: '"Chien, Chih-Chun"'
The third quantization (3rd Q) for bosons provides the exact steady-state solution of the Lindblad equation with quadratic Hamiltonians. By decomposing the interaction of the Bose Hubbard model (BHM) according to Hartree approximation, we present a s
Externí odkaz:
http://arxiv.org/abs/2408.13174
Quantum walk (QW) utilizes its internal quantum states to decide the displacement, thereby introducing single-particle entanglement between the internal and positional degrees of freedom. By simulating three variants of QW with the conventional, symm
Externí odkaz:
http://arxiv.org/abs/2408.05597
Dynamic quantum phase transitions (DQPT) following quantum quenches exhibit singular behavior of the overlap between the initial and evolved states. Here we present a formalism to incorporate a geometric phase into quench dynamics of mixed quantum st
Externí odkaz:
http://arxiv.org/abs/2407.11809
We propose a spectroscopic probe of the breaking and localization of Cooper pairs in an atomic Fermi superfluid interacting with a Rydberg impurity. This is achieved by monitoring the formation of diatomic and triatomic ultralong-range molecular spec
Externí odkaz:
http://arxiv.org/abs/2405.01401
Publikováno v:
Phys. Rev. B 110, 035404 (2024)
The quantum geometric tensor (QGT) reveals local geometric properties and associated topological information of quantum states. Here a generalization of the QGT to mixed quantum states at finite temperatures based on the Sj$\ddot{\text{o}}$qvist dist
Externí odkaz:
http://arxiv.org/abs/2403.06944
Autor:
He, Yan, Chien, Chih-Chun
Publikováno v:
J. Phys.: Condens. Matter 36 425402 (2024)
The spatial Kibble-Zurek mechanism (KZM) is applied to the Kitaev chain with inhomogeneous pairing interactions that vanish in half of the lattice and result in a quantum critical point separating the superfluid and normal-gas phases in real space. T
Externí odkaz:
http://arxiv.org/abs/2401.05954
Autor:
He, Yan, Chien, Chih-Chun
Publikováno v:
Phys. Rev. A 108, 053303 (2023)
The structures of multiply quantized vortices (MQVs) of an equal-population atomic Fermi superfluid in a rotating spherical bubble trap approximated as a thin shell are analyzed by solving the Bogoliubov-de Gennes (BdG) equation throughout the BCS-Bo
Externí odkaz:
http://arxiv.org/abs/2308.10065
Publikováno v:
Phys. Rev. B 110, 035144 (2024)
The quantum geometric tensor (QGT) is a fundamental concept for characterizing the local geometry of quantum states. After casting the geometry of pure quantum states and extracting the QGT, we generalize the geometry to mixed quantum states via the
Externí odkaz:
http://arxiv.org/abs/2305.07597
Publikováno v:
Phys. Rev. E 108, 035308 (2023)
A transition of quantum walk induced by classical randomness changes the probability distribution of the walker from a two-peak structure to a single-peak one when the random parameter exceeds a critical value. We first establish the generality of th
Externí odkaz:
http://arxiv.org/abs/2304.14348
Autor:
Parajuli, Bishal, Chien, Chih-Chun
Publikováno v:
Phys. Rev. A 107, 063314 (2023)
Introducing spatially tunable interactions to atomic Fermi gases makes it feasible to study two phenomena, the proximity effect and spatial Kibble-Zurek mechanism (KZM), in a unified platform. While the proximity effect of a superconductor adjacent t
Externí odkaz:
http://arxiv.org/abs/2303.11213