Manipulating the quantum state of an electrical circuit

被引：1365

作者：

Vion, D ^{[1
]}

Aassime, A ^{[1
]}

Cottet, A ^{[1
]}

Joyez, P ^{[1
]}

Pothier, H ^{[1
]}

Urbina, C ^{[1
]}

Esteve, D ^{[1
]}

Devoret, MH ^{[1
]}

机构：

[1] CEA Saclay, Direct Sci Mat, Serv Phys Etat Condense, Quantron Grp, F-91191 Gif Sur Yvette, France

来源：

SCIENCE | 2002年 / 296卷 / 5569期

关键词：

D O I：

10.1126/science.1069372

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

We have designed and operated a superconducting tunnel junction circuit that behaves as a two-level atom: the "quantronium." An arbitrary evolution of its quantum state can be programmed with a series of microwave pulses, and a projective measurement of the state can be performed by a pulsed readout subcircuit. The measured quality factor of quantum coherence Q(phi) congruent to 25,000 is sufficiently high that a solid-state quantum processor based on this type of circuit can be envisioned.

引用

页码：886 / 889

页数：4

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