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Aug 02, 2016

Partially dark optical molecule via phase control

We study the tunable photonic distribution in an optical molecule consisting of two linearly coupled single-mode cavities. With the inter-cavity coup…
Nov 18, 2016
Optics

Fisher information of a squeezed-state interferometer with a finite …

Squeezed-state interferometry plays an important role in quantum-enhanced optical phase estimation, as it allows the estimation precision to be impro…
May 29, 2014
Mesoscale and Nanoscale Physics

Single-spin manipulation in a double quantum dot in the field of a …

The manipulation of single spins in double quantum dots by making use of the exchange interaction and a highly inhomogeneous magnetic field was discu…
Mar 09, 2018
Statistical Mechanics

Thermoelectric performance of topological boundary modes

We investigate quantum transport and thermoelectrical properties of a finite-size Su-Schrieffer-Heeger model, a paradigmatic model for a one-dimensio…
Feb 18, 2019
Materials Science

phq: a Fortran code to compute phonon quasiparticle properties and …

We here introduce a Fortran code that computes anharmonic free energy of solids from first-principles based on our phonon quasiparticle approach. In …
Dec 11, 2016
Numerical Analysis

Superconvergence analysis of DG-FEM based on the polynomial preservin…

We study superconvergence property of the linear discontinuous Galerkin finite element method with the polynomial preserving recovery (PPR) and Richa…
Jun 07, 2013
Numerical Analysis

An efficient spectral method for computing dynamics of rotating two…

In this paper, we propose an efficient and accurate numerical method for computing the dynamics of rotating two-component Bose--Einstein condensates …
May 07, 2015
Quantum Gases

Exotic pairing in 1D spin-3/2 atomic gases with $SO(4)$ symmetry

Tuning interactions in the spin singlet and quintet channels of two colliding atoms could change the symmetry of the one-dimensional spin-3/2 fermion…
Jul 27, 2015
Mathematical Physics
Optics

Advantages of nonclassical pointer states in postselected weak meas…

We investigate, within the weak measurement theory, the advantages of non-classical pointer states over semi-classical ones for coherent, squeezed va…
Aug 02, 2013
Strongly Correlated Electrons

Topological Flat Band Models and Fractional Chern Insulators

Topological insulators and their intriguing edge states can be understood in a single-particle picture and can as such be exhaustively classified. In…
Jul 15, 2013

Fast optical cooling of nanomechanical cantilever with the dynamical …

We propose an efficient optical electromagnetically induced transparency (EIT) cooling scheme for a cantilever with a nitrogen-vacancy center attache…
Mar 27, 2017
Numerical Analysis

A Heterogeneous FMM for 2-D Layered Media Helmholtz Equation I: Two &…

In this paper, we will introduce a new heterogeneous fast multipole method (H-FMM) for 2-D Helmholtz equation in layered media. To illustrate the mai…
Jul 28, 2013
Quantum Gases
Atomic Physic
Optics

Quantum Fisher information of entangled coherent state in the presenc…

We investigate the performance of entangled coherent state for quantum enhanced phase estimation. An exact analytical expression of quantum Fisher in…
May 21, 2019
Optics

Optimal undirectional amplification induced by optical gain in opto…

We propose a three-mode optomechanical system to realize optical nonreciprocal transmission with unidirectional amplification, where the system consi…
Sep 15, 2016
Numerical Analysis

Robust residual-based a posteriori error estimators for mixed finite …

We consider mixed finite element approximation of a singularly perturbed fourth-order elliptic problem with two different boundary conditions, and pr…
Jun 05, 2015

Controllable coupling between a nanomechanical resonator and a copl…

We study a tripartite quantum system consisting of a coplanar-waveguide (CPW) resonator and a nanomechanical resonator (NAMR) connected by a flux qub…
Jan 19, 2018
Computational Physics
Numerical Analysis
Fluid Dynamics

An Exponential Time-Integrator Scheme for Steady and Unsteady Invisci…

An exponential time-integrator scheme of second-order accuracy based on the predictor-corrector methodology, denoted PCEXP, is developed to solve mul…
Aug 07, 2014

Exact non-Markovian master equations for multiple qubit systems: quan…

A wide class of exact master equations for a multiple qubit system can be explicitly constructed by using the corresponding exact non-Markovian quant…
May 21, 2018

Directional amplifier in an optomechanical system with optical gain

Directional amplifiers are crucial nonreciprocal devices in both classical and quantum information processing. Here we propose a scheme for realizing…
Oct 06, 2018
Other Condensed Matter

Exact quantum dynamics of XXZ central spin problems

We obtain analytically close forms of benchmark quantum dynamics of the collapse and revival, reduced density matrix, Von Neumann entropy, coherence …
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