dorsal/arxiv
View SchemaEntanglement between qubits induced by a common environment with a gap
| Authors | Sangchul Oh, Jaewan Kim |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0605033 |
| URL | https://arxiv.org/abs/quant-ph/0605033 |
| DOI | 10.1103/PhysRevA.73.062306 |
| Journal | Phys. Rev. A 73, 062306 (2006) |
Abstract
We study a system of two qubits interacting with a common environment, described by a two-spin boson model. We demonstrate two competing roles of the environment: inducing entanglement between the two qubits and making them decoherent. For the environment of a single harmonic oscillator, if its frequency is commensurate with the induced two-qubit coupling strength, the two qubits could be maximally entangled and the environment could be separable. In the case of the environment of a bosonic bath, the gap of its spectral density function is essential to generate entanglement between two qubits at equilibrium and for it to be used as a quantum data bus.
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"abstract": "We study a system of two qubits interacting with a common environment,\ndescribed by a two-spin boson model. We demonstrate two competing roles of the\nenvironment: inducing entanglement between the two qubits and making them\ndecoherent. For the environment of a single harmonic oscillator, if its\nfrequency is commensurate with the induced two-qubit coupling strength, the two\nqubits could be maximally entangled and the environment could be separable. In\nthe case of the environment of a bosonic bath, the gap of its spectral density\nfunction is essential to generate entanglement between two qubits at\nequilibrium and for it to be used as a quantum data bus.",
"arxiv_id": "quant-ph/0605033",
"authors": [
"Sangchul Oh",
"Jaewan Kim"
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"quant-ph"
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"doi": "10.1103/PhysRevA.73.062306",
"journal_ref": "Phys. Rev. A 73, 062306 (2006)",
"title": "Entanglement between qubits induced by a common environment with a gap",
"url": "https://arxiv.org/abs/quant-ph/0605033"
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