Zobrazeno 1 - 10
of 262
pro vyhledávání: '"Lambert, Neill"'
We investigate non-Markovian transport dynamics and signatures of the Kondo effect in a single impurity Anderson model. The model consists of a quantum dot (QD) with ultra-strong coupling to a left lead and weak coupling to a right lead acting as a d
Externí odkaz:
http://arxiv.org/abs/2410.01717
We derive an extended version of the hierarchical equations of motion (HEOM) to compute output physical properties of a bosonic environment, which is allowed to be initially prepared at an earlier time in a non-Gaussian input state and then non-pertu
Externí odkaz:
http://arxiv.org/abs/2408.12221
Exceptional points (EPs) are singularities in the spectra of non-Hermitian operators, where eigenvalues and eigenvectors coalesce. Recently, open quantum systems have been increasingly explored as EP testbeds due to their natural non-Hermitian nature
Externí odkaz:
http://arxiv.org/abs/2406.18362
Publikováno v:
Phys. Rev. Research 6, 033181 (2024)
The Dicke model describes an ensemble of two-level atoms that are coupled to a confined light mode of an optical cavity. Above a critical coupling, the cavity becomes macroscopically occupied, and the system enters the superradiant phase. This phase
Externí odkaz:
http://arxiv.org/abs/2405.13276
Autor:
Kuo, Po-Chen, Yang, Shen-Liang, Lambert, Neill, Lin, Jhen-Dong, Huang, Yi-Te, Nori, Franco, Chen, Yueh-Nan
The Liouvillian skin effect and the non-Hermitian skin effect have both been used to explain the localization of eigenmodes near system boundaries, though the former is arguably more accurate in some regimes due to its incorporation of quantum jumps.
Externí odkaz:
http://arxiv.org/abs/2403.14455
Publikováno v:
Phys. Rev. Research 6, 033237 (2024)
The pseudomode framework provides an exact description of the dynamics of an open quantum system coupled to a non-Markovian environment. Using this framework, the influence of the environment on the system is studied in an equivalent model, where the
Externí odkaz:
http://arxiv.org/abs/2401.11830
Publikováno v:
Phys. Rev. Research 6, 033083 (2024)
The influence of a Gaussian environment on a quantum system can be described by effectively replacing the continuum with a discrete set of ancillary quantum and classical degrees of freedom. This defines a pseudomode model which can be used to classi
Externí odkaz:
http://arxiv.org/abs/2311.15240
Dissipative state engineering is a general term for a protocol which prepares the ground state of a complex many-body Hamiltonian using engineered dissipation or engineered environments. Recently, it was shown that a version of this protocol, where t
Externí odkaz:
http://arxiv.org/abs/2310.12539
Autor:
Huang, Yi-Te, Kuo, Po-Chen, Lambert, Neill, Cirio, Mauro, Cross, Simon, Yang, Shen-Liang, Nori, Franco, Chen, Yueh-Nan
Publikováno v:
Commun. Phys. 6, 313 (2023)
The hierarchical equations of motion (HEOM) approach can describe the reduced dynamics of a system simultaneously coupled to multiple bosonic and fermionic environments. The complexity of exactly describing the system-environment interaction with the
Externí odkaz:
http://arxiv.org/abs/2306.07522
We study a generalization of a recently introduced Dicke trimer model [Phys. Rev. Lett. 128, 163601, Phys. Rev. Research 5, L042016], which allows for cavity losses and unbalanced light-matter interactions (in which rotating and counter-rotating term
Externí odkaz:
http://arxiv.org/abs/2303.11758