Generation of maximum spin entanglement induced by a cavity field in quantum-dot systems

Adam Miranowicz; Şahin K. Özdemir; Yu Xi Liu; Masato Koashi; Nobuyuki Imoto; Yoshiro Hirayama

doi:10.1103/PhysRevA.65.062321

Generation of maximum spin entanglement induced by a cavity field in quantum-dot systems

Adam Miranowicz, Şahin K. Özdemir, Yu Xi Liu, Masato Koashi, Nobuyuki Imoto, Yoshiro Hirayama

Engineering Science and Mechanics

Research output: Contribution to journal › Article › peer-review

52 Scopus citations

Abstract

The evolution of the conduction-band spins of quantum dots was studied. An analytical solution and its Schmidt decomposition for the equivalent-neighbor model was obtained. The solution was applied to the study of bipartite entanglement in quantum dot systems with arbitrary numbers of dots and their excitations. Results indicated that the perfect maximally entangled states could be generated in systems of up to six dots with a single dot initially excited. A monotonic decrease of entanglement was observed with increase in total number of dots in a system with a fixed number of excitations.

Original language	English (US)
Article number	062321
Pages (from-to)	623211-623216
Number of pages	6
Journal	Physical Review A - Atomic, Molecular, and Optical Physics
Volume	65
Issue number	6 A
DOIs	https://doi.org/10.1103/PhysRevA.65.062321
State	Published - Jun 2002

All Science Journal Classification (ASJC) codes

Atomic and Molecular Physics, and Optics

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10.1103/PhysRevA.65.062321

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AU - Özdemir, Şahin K.

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AU - Koashi, Masato

AU - Imoto, Nobuyuki

AU - Hirayama, Yoshiro

PY - 2002/6

Y1 - 2002/6

N2 - The evolution of the conduction-band spins of quantum dots was studied. An analytical solution and its Schmidt decomposition for the equivalent-neighbor model was obtained. The solution was applied to the study of bipartite entanglement in quantum dot systems with arbitrary numbers of dots and their excitations. Results indicated that the perfect maximally entangled states could be generated in systems of up to six dots with a single dot initially excited. A monotonic decrease of entanglement was observed with increase in total number of dots in a system with a fixed number of excitations.

AB - The evolution of the conduction-band spins of quantum dots was studied. An analytical solution and its Schmidt decomposition for the equivalent-neighbor model was obtained. The solution was applied to the study of bipartite entanglement in quantum dot systems with arbitrary numbers of dots and their excitations. Results indicated that the perfect maximally entangled states could be generated in systems of up to six dots with a single dot initially excited. A monotonic decrease of entanglement was observed with increase in total number of dots in a system with a fixed number of excitations.

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Generation of maximum spin entanglement induced by a cavity field in quantum-dot systems

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