Magnetic Stirling Cycle for Qubits with Anisotropy near the Quantum Critical Point
We studied the performance of a quantum magnetic Stirling cycle that uses a working substance composed of two entangled antiferromagnetic qubits (<i>J</i>) under the influence of an external magnetic field (<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML&quo...
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MDPI AG
2023-11-01
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| Online Access: | https://www.mdpi.com/2227-7080/11/6/169 |
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| author | Cristóbal Araya Francisco J. Peña Ariel Norambuena Bastián Castorene Patricio Vargas |
| author_facet | Cristóbal Araya Francisco J. Peña Ariel Norambuena Bastián Castorene Patricio Vargas |
| author_sort | Cristóbal Araya |
| collection | DOAJ |
| description | We studied the performance of a quantum magnetic Stirling cycle that uses a working substance composed of two entangled antiferromagnetic qubits (<i>J</i>) under the influence of an external magnetic field (<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mi>B</mi><mi>z</mi></msub></semantics></math></inline-formula>) and an uniaxial anisotropy field (<i>K</i>) along the total spin in the y-direction. The efficiency and work were calculated as a function of <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mi>B</mi><mi>z</mi></msub></semantics></math></inline-formula> and for different values of the anisotropy constant <i>K</i> given hot and cold reservoir temperatures. The anisotropy has been shown to extend the region of the external magnetic field in which the Stirling cycle is more efficient compared to the ideal case. |
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| format | Article |
| id | doaj.art-8f3a9ea7f3f2452ab5be97ae0c482139 |
| institution | Directory Open Access Journal |
| issn | 2227-7080 |
| language | English |
| last_indexed | 2024-03-08T20:19:17Z |
| publishDate | 2023-11-01 |
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| spelling | doaj.art-8f3a9ea7f3f2452ab5be97ae0c4821392023-12-22T14:45:38ZengMDPI AGTechnologies2227-70802023-11-0111616910.3390/technologies11060169Magnetic Stirling Cycle for Qubits with Anisotropy near the Quantum Critical PointCristóbal Araya0Francisco J. Peña1Ariel Norambuena2Bastián Castorene3Patricio Vargas4Departamento de Física, CEDENNA, Universidad Técnica Federico Santa María, Casilla 110-V, Valparaíso 2390123, ChileDepartamento de Física, Universidad Técnica Federico Santa María, Casilla 110-V, Valparaíso 2390123, ChileCentro Multidisciplinario de Física, Universidad Mayor, Camino la Pirámide 5750, Huechuraba, Santiago 7500994, ChileDepartamento de Física, Universidad Técnica Federico Santa María, Casilla 110-V, Valparaíso 2390123, ChileDepartamento de Física, CEDENNA, Universidad Técnica Federico Santa María, Casilla 110-V, Valparaíso 2390123, ChileWe studied the performance of a quantum magnetic Stirling cycle that uses a working substance composed of two entangled antiferromagnetic qubits (<i>J</i>) under the influence of an external magnetic field (<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mi>B</mi><mi>z</mi></msub></semantics></math></inline-formula>) and an uniaxial anisotropy field (<i>K</i>) along the total spin in the y-direction. The efficiency and work were calculated as a function of <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mi>B</mi><mi>z</mi></msub></semantics></math></inline-formula> and for different values of the anisotropy constant <i>K</i> given hot and cold reservoir temperatures. The anisotropy has been shown to extend the region of the external magnetic field in which the Stirling cycle is more efficient compared to the ideal case.https://www.mdpi.com/2227-7080/11/6/169entangled qubitsmagnetic cyclequantum thermodynamics |
| spellingShingle | Cristóbal Araya Francisco J. Peña Ariel Norambuena Bastián Castorene Patricio Vargas Magnetic Stirling Cycle for Qubits with Anisotropy near the Quantum Critical Point Technologies entangled qubits magnetic cycle quantum thermodynamics |
| title | Magnetic Stirling Cycle for Qubits with Anisotropy near the Quantum Critical Point |
| title_full | Magnetic Stirling Cycle for Qubits with Anisotropy near the Quantum Critical Point |
| title_fullStr | Magnetic Stirling Cycle for Qubits with Anisotropy near the Quantum Critical Point |
| title_full_unstemmed | Magnetic Stirling Cycle for Qubits with Anisotropy near the Quantum Critical Point |
| title_short | Magnetic Stirling Cycle for Qubits with Anisotropy near the Quantum Critical Point |
| title_sort | magnetic stirling cycle for qubits with anisotropy near the quantum critical point |
| topic | entangled qubits magnetic cycle quantum thermodynamics |
| url | https://www.mdpi.com/2227-7080/11/6/169 |
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