The quantum dynamics of two coupled large spins
V. E. Zobov
TL;DR
This paper investigates the quantum dynamics of two large coupled spins, analyzing their evolution and implications for quantum computation on qudits, with results applicable for large spin systems.
Contribution
It provides analytical formulas for the evolution of large spins and discusses the feasibility of quantum computation with high-spin qudits.
Findings
Asymptotic formulas derived for large spins S>>1
Quantum computation on qudits with large spins faces no principal limitations
Analysis of mean spin components and I-concurrence over time
Abstract
We calculate the time evolution of mean spin components and the squared I-concurrence of two coupled large spins S. As the initial conditions we take two cases: spin coherent states and uniform superposition states. For the spin coherent states we have obtained the asymptotic for-mulas at S>>1 and t<<T (T is period). We draw a conclusion that quantum computation on qudits, represented by large spins, do not get the principal limitations on the spin number S.
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Taxonomy
TopicsQuantum Computing Algorithms and Architecture · Quantum Mechanics and Applications · Quantum Information and Cryptography