Dynamics of Entanglement between a Quantum Dot Spin Qubit and a Photon Qubit inside a Semiconductor High-Q Nanocavity
We investigate in this paper the dynamics of entanglement between a QD spin qubit and a single photon qubit inside a quantum network node, as well as its robustness against various decoherence processes. First, the entanglement dynamics is considered without decoherence. In the small detuning regime...
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| Format: | Article |
| Language: | English |
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Wiley
2010-01-01
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| Series: | Advances in Mathematical Physics |
| Online Access: | http://dx.doi.org/10.1155/2010/342915 |
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| _version_ | 1832559716319887360 |
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| author | Hubert Pascal Seigneur Gabriel Gonzalez Michael Niklaus Leuenberger Winston Vaughan Schoenfeld |
| author_facet | Hubert Pascal Seigneur Gabriel Gonzalez Michael Niklaus Leuenberger Winston Vaughan Schoenfeld |
| author_sort | Hubert Pascal Seigneur |
| collection | DOAJ |
| description | We investigate in this paper the dynamics of entanglement between a QD spin qubit and a single photon qubit inside a quantum network node, as well as its robustness against various decoherence processes. First, the entanglement dynamics is considered without decoherence. In the small detuning regime (Δ=78 μeV), there are three different conditions for maximum entanglement, which occur after 71, 93, and 116 picoseconds of interaction time. In the large detuning regime (Δ=1.5 meV), there is only one peak for maximum entanglement occurring at 625 picoseconds. Second, the entanglement dynamics is considered with decoherence by including the effects of spin-nucleus and hole-nucleus hyperfine interactions. In the small detuning regime, a decent amount of entanglement (35% entanglement) can only be obtained within 200 picoseconds of interaction. Afterward, all entanglement is lost. In the large detuning regime, a smaller amount of entanglement is realized, namely, 25%. And, it lasts only within the first 300 picoseconds. |
| format | Article |
| id | doaj-art-af1b12e2250a4f34981e39e7435e7db9 |
| institution | Kabale University |
| issn | 1687-9120 1687-9139 |
| language | English |
| publishDate | 2010-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Mathematical Physics |
| spelling | doaj-art-af1b12e2250a4f34981e39e7435e7db92025-02-03T01:29:23ZengWileyAdvances in Mathematical Physics1687-91201687-91392010-01-01201010.1155/2010/342915342915Dynamics of Entanglement between a Quantum Dot Spin Qubit and a Photon Qubit inside a Semiconductor High-Q NanocavityHubert Pascal Seigneur0Gabriel Gonzalez1Michael Niklaus Leuenberger2Winston Vaughan Schoenfeld3CREOL College of Optics and Photonics, University of Central Florida, Orlando, FL 32826, USANanoScience Technology Center, University of Central Florida, Orlando, FL 32826, USANanoScience Technology Center, University of Central Florida, Orlando, FL 32826, USACREOL College of Optics and Photonics, University of Central Florida, Orlando, FL 32826, USAWe investigate in this paper the dynamics of entanglement between a QD spin qubit and a single photon qubit inside a quantum network node, as well as its robustness against various decoherence processes. First, the entanglement dynamics is considered without decoherence. In the small detuning regime (Δ=78 μeV), there are three different conditions for maximum entanglement, which occur after 71, 93, and 116 picoseconds of interaction time. In the large detuning regime (Δ=1.5 meV), there is only one peak for maximum entanglement occurring at 625 picoseconds. Second, the entanglement dynamics is considered with decoherence by including the effects of spin-nucleus and hole-nucleus hyperfine interactions. In the small detuning regime, a decent amount of entanglement (35% entanglement) can only be obtained within 200 picoseconds of interaction. Afterward, all entanglement is lost. In the large detuning regime, a smaller amount of entanglement is realized, namely, 25%. And, it lasts only within the first 300 picoseconds.http://dx.doi.org/10.1155/2010/342915 |
| spellingShingle | Hubert Pascal Seigneur Gabriel Gonzalez Michael Niklaus Leuenberger Winston Vaughan Schoenfeld Dynamics of Entanglement between a Quantum Dot Spin Qubit and a Photon Qubit inside a Semiconductor High-Q Nanocavity Advances in Mathematical Physics |
| title | Dynamics of Entanglement between a Quantum Dot Spin Qubit and a Photon Qubit inside a Semiconductor High-Q Nanocavity |
| title_full | Dynamics of Entanglement between a Quantum Dot Spin Qubit and a Photon Qubit inside a Semiconductor High-Q Nanocavity |
| title_fullStr | Dynamics of Entanglement between a Quantum Dot Spin Qubit and a Photon Qubit inside a Semiconductor High-Q Nanocavity |
| title_full_unstemmed | Dynamics of Entanglement between a Quantum Dot Spin Qubit and a Photon Qubit inside a Semiconductor High-Q Nanocavity |
| title_short | Dynamics of Entanglement between a Quantum Dot Spin Qubit and a Photon Qubit inside a Semiconductor High-Q Nanocavity |
| title_sort | dynamics of entanglement between a quantum dot spin qubit and a photon qubit inside a semiconductor high q nanocavity |
| url | http://dx.doi.org/10.1155/2010/342915 |
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