VP8-09 Transient Magnetic Field Optimization for Stable Entanglement in Spin Dimers
Creators: Jin Wang
Julie Krause
Publisher: name: IEEE
Year: 2025

Quantum entanglement, a core element of quantum information and computation, involves particles sharing a collective wave function and influencing each other even over great distances. This paper introduces optimized time-varying magnetic field functions designed to stabilize and enhance entanglement in a decoherence-free Heisenberg spin dimer. It explores how magnetic field affects coherence and population terms in the density matrix, showing that optimized transient magnetic fields can eliminate natural oscillations in entanglement and thus maximize its stability. These findings offer valuable insights into the nature of the magnetic field solutions and the system’s progression toward a stable entangled state. Understanding how time-varying magnetic field can sustain a nearly perfect entangled state in Heisenberg spin chains is essential for advancing potential quantum computing applications.References: [1] Ren . Ground-to-satellite quantum teleportation. Nature. 2017;549:70–73. [2] Groisman B, Strelchuk S. Optimal amount of entanglement to distinguish quantum states instantaneously. Phys RevA. 2015;92:052337. doi:10.1103/PhysRevA.92.052337 [3] ArnesenMC, Bose S, Vedral V. Natural thermal and magnetic entanglement in the 1D Heisenberg model. Phys Rev Lett. 2001;87:017901. doi:10.1103/PhysRevLett.87.017901 [4] Wang J, Landman M, Sutter T, et al. Entanglement evolution in a Heisenberg spin dimer. IEEE Trans Magn. 2019;55(12):1–3. [5] Hill S, Wootters WK. Entanglement of a pair of quantum bits. Phys Rev Lett. 1997;78:5022–5025. doi:10.1103/PhysRevLett.78.5022
Quantum entanglement, a core element of quantum information and computation, involves particles sharing a collective wave function and influencing each other even over great distances. This paper introduces optimized time-varying magnetic field functions designed to stabilize and enhance entanglement in a decoherence-free Heisenberg spin dimer. It explores how magnetic field affects coherence and population terms in the density matrix, showing that optimized transient magnetic fields can eliminate natural oscillations in entanglement and thus maximize its stability. These findings offer valuable insights into the nature of the magnetic field solutions and the system’s progression toward a stable entangled state. Understanding how time-varying magnetic field can sustain a nearly perfect entangled state in Heisenberg spin chains is essential for advancing potential quantum computing applications.References: [1] Ren . Ground-to-satellite quantum teleportation. Nature. 2017;549:70–73. [2] Groisman B, Strelchuk S. Optimal amount of entanglement to distinguish quantum states instantaneously. Phys RevA. 2015;92:052337. doi:10.1103/PhysRevA.92.052337 [3] ArnesenMC, Bose S, Vedral V. Natural thermal and magnetic entanglement in the 1D Heisenberg model. Phys Rev Lett. 2001;87:017901. doi:10.1103/PhysRevLett.87.017901 [4] Wang J, Landman M, Sutter T, et al. Entanglement evolution in a Heisenberg spin dimer. IEEE Trans Magn. 2019;55(12):1–3. [5] Hill S, Wootters WK. Entanglement of a pair of quantum bits. Phys Rev Lett. 1997;78:5022–5025. doi:10.1103/PhysRevLett.78.5022