Rising time of entanglement between scattering spins

被引：8

作者：

Ciccarello, Francesco ^{[1
,2
]}

Paternostro, Mauro ^{[3
]}

Palma, G. Massimo ^{[4
,5
]}

Zarcone, Michelangelo ^{[1
,2
]}

机构：

[1] Univ Palermo, Dipartimento Fis & Tecnol Relat, I-90128 Palermo, Italy

[2] Univ Palermo, CNISM, I-90128 Palermo, Italy

[3] Queens Univ Belfast, Sch Math & Phys, Belfast BT7 1NN, Antrim, North Ireland

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

[5] Univ Palermo, CNR, INFM, NEST, I-90123 Palermo, Italy

来源：

PHYSICAL REVIEW B | 2009年 / 80卷 / 16期

基金：

英国工程与自然科学研究理事会;

关键词：

FABRY-PEROT-INTERFEROMETER; FLYING QUBITS; QUANTUM; CAVITY; CENTERS;

D O I：

10.1103/PhysRevB.80.165313

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We investigate the time evolution of entanglement in a process where a mobile particle is scattered by static spins. We show that entanglement increases monotonically during a transient and then saturates to a steady-state value. For a quasimonochromatic mobile particle, the transient time depends only on the group velocity and width of the incoming wave packet and is insensitive to the interaction strength and spin number of the scattering particles. These features do not depend on the interaction model and can be seen in various physical settings.

引用

页数：6

共 30 条

[1]

[Anonymous], 1945, J. Phys. USSR, DOI DOI 10.1007/978-3-642-74626-0_8

[2] Quantum-dot spin-state preparation with near-unity fidelity [J].