Dressed Collective Qubit States and the Tavis-Cummings Model in Circuit QED

被引：301

作者：

Fink, J. M. ^{[1
]}

Bianchetti, R. ^{[1
]}

Baur, M. ^{[1
]}

Goeppl, M. ^{[1
]}

Steffen, L. ^{[1
]}

Filipp, S. ^{[1
]}

Leek, P. J. ^{[1
]}

Blais, A. ^{[2
]}

Wallraff, A. ^{[1
]}

机构：

[1] ETH, Dept Phys, CH-8093 Zurich, Switzerland

[2] Univ Sherbrooke, Dept Phys, Sherbrooke, PQ J1K 2R1, Canada

来源：

PHYSICAL REVIEW LETTERS | 2009年 / 103卷 / 08期

基金：

加拿大自然科学与工程研究理事会;

关键词：

NONLINEAR SPECTROSCOPY; OPTICAL CAVITY; QUANTUM; ATOMS;

D O I：

10.1103/PhysRevLett.103.083601

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present an ideal realization of the Tavis-Cummings model in the absence of atom number and coupling fluctuations by embedding a discrete number of fully controllable superconducting qubits at fixed positions into a transmission line resonator. Measuring the vacuum Rabi mode splitting with one, two, and three qubits strongly coupled to the cavity field, we explore both bright and dark dressed collective multiqubit states and observe the discrete N scaling of the collective dipole coupling strength. Our experiments demonstrate a novel approach to explore collective states, such as the W state, in a fully globally and locally controllable quantum system. Our scalable approach is interesting for solid-state quantum information processing and for fundamental multiatom quantum optics experiments with fixed atom numbers.

引用

页数：4

共 32 条

[1] VACUUM-FIELD RABI SPLITTINGS IN MICROWAVE-ABSORPTION BY RYDBERG ATOMS IN A CAVITY [J].