Triplet superfluidity on a triangular ladder with dipolar fermions

Abstract

Motivated by recent experimental progress in the field of dipolar-Fermi gases, we investigate the quantum phases of dipolar fermions, on a triangular ladder at half filling. Using density matrix renormalization group method, in presence of onsite repulsion and intersite attractive interaction, we find exotic spin-triplet superfluid phase in addition to the usual spin-density and charge-density waves. We examine the stability of spin-triplet superfluid phase by varying hopping along the rungs of the triangle. Possibility of fermionic supersolidity has also been discussed, by considering threebody interaction in the Hamiltonian. We also study the effect of spin-dependent hopping on the stability of spin-triplet superfluid phase.

Quantum evolution speed and its limit in the driven double‐well system

“…Recently, QSLs from the point of view of the total system consisting of the open system and its environment have been proposed, and its relationship with entanglement has been widely studied [42][43][44]. Meanwhile,the recent advancements in QSLs extensions to How quickly an observable change, or a finite speed that is constrained by the topological structure of the underlying dynamics [28,37,[45][46][47][48][49][50]].…”

“…A tight QSL is given on the basis of the unified bound of MT and ML bounds [10,28]. Then, the QSLs of MT and ML bounds have been broadly used to characterize quantum dynamics in closed systems [29,30], many-body systems [31,32], time-dependent driven systems [33,34], time-dependent non-Hermitian systems [35,36], thermodynamic system [37,38], others open quantum systems [39,40], and see more in the review papers [14,41].Recently, QSLs from the point of view of the total system consisting of the open system and its environment have been proposed, and its relationship with entanglement has been widely studied [42][43][44]. Meanwhile,the recent advancements in QSLs extensions to How quickly an observable change, or a finite speed that is constrained by the topological structure of the underlying dynamics [28,37,[45][46][47][48][49][50]].…”

Quantum correlations, entanglement spectrum and coherence of two-particle reduced density matrix in the Extended Hubbard Model

“…We analyse the quantum correlations and many-body entanglement present in the reduced density matrices among the different phases of the model and across its quantum phase transitions. Most studies of the EHM in the quantum information context has dealt with the quantum correlations and entanglement among the modes of the system [35][36][37][38][39][40][41][42][43][44]. Here modes can be any defined set of single particle degrees of freedom, as e.g., the spatial localized degrees along the sites of the chain, or (spatially delocalized) momentum degrees of freedom for single particles.…”