Entanglement degradation in the solid state: Interplay of adiabatic and quantum noise

被引：41

作者：

Bellomo, B. ^{[1
,2
]}

Compagno, G. ^{[1
,2
]}

D'Arrigo, A. ^{[3
,4
]}

Falci, G. ^{[3
,4
]}

Lo Franco, R. ^{[1
,2
]}

Paladino, E. ^{[3
,4
]}

机构：

[1] Univ Palermo, CNISM, I-90123 Palermo, Italy

[2] Univ Palermo, Dipartimento Sci Fis & Astron, I-90123 Palermo, Italy

[3] Univ Catania, Dipartimento Metodol Fis & Chim, I-95125 Catania, Italy

[4] CNR, IMM MATIS, I-00185 Rome, Italy

来源：

PHYSICAL REVIEW A | 2010年 / 81卷 / 06期

关键词：

SUPERCONDUCTING QUBITS; OSCILLATIONS; PAIR;

D O I：

10.1103/PhysRevA.81.062309

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We study entanglement degradation of two noninteracting qubits subject to independent baths with broadband spectra typical of solid-state nanodevices. We obtain the analytic form of the concurrence in the presence of adiabatic noise for classes of entangled initial states presently achievable in experiments. We find that adiabatic (low-frequency) noise affects entanglement reduction analogously to pure dephasing noise. Due to quantum (high-frequency) noise, entanglement is totally lost in a state-dependent finite time. The possibility of implementing on-chip local and entangling operations is briefly discussed.

引用

页数：5

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