Dynamical polaron Ansatz: A theoretical tool for the ultrastrong-coupling regime of circuit QED

被引：45

作者：

Diaz-Camacho, Guillermo ^{[1
]}

Bermudez, Alejandro ^{[1
]}

Jose Garcia-Ripoll, Juan ^{[1
]}

机构：

[1] CSIC, Inst Fis Fundamental, Calle Serrano 113b, Madrid 28006, Spain

来源：

PHYSICAL REVIEW A | 2016年 / 93卷 / 04期

关键词：

DENSITY-MATRIX RENORMALIZATION; 2-LEVEL SYSTEM; VARIATIONAL CALCULATION; 2-STATE SYSTEM; GROUND-STATES; SPIN CHAINS; QUANTUM; DISSIPATION; BATH; EQUIVALENCE;

D O I：

10.1103/PhysRevA.93.043843

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

In this work we develop a semianalytical variational Ansatz to study the properties of few-photon excitations interacting with a collection of quantum emitters in regimes that go beyond the rotating-wave approximation. This method can be used to approximate both the static and dynamical properties of a superconducting qubit in an open transmission line, including the spontaneous emission spectrum and the resonances in scattering experiments. The approximations are quantitatively accurate for rather strong couplings, as shown by a direct comparison to matrix-product-state numerical methods, and provide also a good qualitative description for stronger couplings well beyond the Markovian regime.

引用

页数：13

共 69 条

[41] Interfacing single photons and single quantum dots with photonic nanostructures [J].

Lodahl, Peter ;

Mahmoodian, Sahand ;

Stobbe, Soren .

REVIEWS OF MODERN PHYSICS, 2015, 87 (02) :347-400

[42] Separation-dependent localization in a two-impurity spin-boson model [J].

McCutcheon, Dara P. S. ;

Nazir, Ahsan ;

Bose, Sougato ;

Fisher, Andrew J. .

PHYSICAL REVIEW B, 2010, 81 (23)

[43] RETARDATION IN RESONANT INTERACTION OF 2 IDENTICAL ATOMS [J].

MILONNI, PW ;

KNIGHT, PL .

PHYSICAL REVIEW A, 1974, 10 (04) :1096-1108

[44] Circuit quantum electrodynamics in the ultrastrong-coupling regime [J].

Niemczyk, T. ;

Deppe, F. ;

Huebl, H. ;

Menzel, E. P. ;

Hocke, F. ;

Schwarz, M. J. ;

Garcia-Ripoll, J. J. ;

Zueco, D. ;

Huemmer, T. ;

Solano, E. ;

Marx, A. ;

Gross, R. .

NATURE PHYSICS, 2010, 6 (10) :772-776

[45]

OSTLUND S, 1995, PHYS REV LETT, V75, P3537, DOI 10.1103/PhysRevLett.75.3537

[46] Quantum computers and dissipation [J].

Palma, GM ;

Suominen, KA ;

Ekert, AK .

PROCEEDINGS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES, 1996, 452 (1946) :567-584

[47] Nonequilibrium and Nonperturbative Dynamics of Ultrastrong Coupling in Open Lines [J].

Peropadre, B. ;

Zueco, D. ;

Porras, D. ;

Garcia-Ripoll, J. J. .

PHYSICAL REVIEW LETTERS, 2013, 111 (24)

[48] Scattering of coherent states on a single artificial atom [J].

Peropadre, B. ;

Lindkvist, J. ;

Hoi, I-C ;

Wilson, C. M. ;

Garcia-Ripoll, J. J. ;

Delsing, P. ;

Johansson, G. .

NEW JOURNAL OF PHYSICS, 2013, 15

[49] ONE-DIMENSIONAL ISING MODEL WITH A TRANSVERSE FIELD [J].

PFEUTY, P .

ANNALS OF PHYSICS, 1970, 57 (01) :79-+

[50] Matrix product operator representations [J].

Pirvu, B. ;

Murg, V. ;

Cirac, J. I. ;

Verstraete, F. .

NEW JOURNAL OF PHYSICS, 2010, 12

← 1 2 3 4 5 6 7 →