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Characterizing genuine multisite entanglement in isotropic spin lattices
Himadri Shekhar Dhar1, Aditi Sen De, Ujjwal Sen
1School of Physical Sciences, Jawaharlal Nehru University, New Delhi, India.
Physical Review Letters
|September 3, 2013
Summary
Researchers demonstrate genuine multiparty entanglement in dimer-covered spin lattices, applicable from organic molecules to quantum computation. An efficient method characterizes this multisite entanglement, even for infinite lattices.
Area of Science:
- Quantum physics
- Condensed matter physics
- Quantum information science
Background:
- Superposed states derived from dimer coverings on spin-1/2 isotropic lattices are relevant to diverse fields.
- Understanding the entanglement properties of these states is crucial for their applications.
Purpose of the Study:
- To demonstrate that these superposed states are genuinely multiparty entangled.
- To develop an efficient method for characterizing genuine multisite entanglement.
- To estimate the multisite entanglement in infinite lattices.
Main Methods:
- Analysis of dimer coverings on spin-1/2 isotropic lattices.
- Development of an iterative analytical method for entanglement characterization.
- Application of finite-size scaling techniques.
Main Results:
- Genuine multiparty entanglement is proven for these states, independent of lattice geometry and dimension.
- An efficient method is presented for characterizing multisite entanglement in square lattices.
- The multisite entanglement of infinite square lattices is estimated using finite-size scaling.
Conclusions:
- The studied superposed states exhibit robust genuine multiparty entanglement.
- The developed analytical method is effective for quantifying multisite entanglement.
- This research provides a valuable tool for investigating complex quantum states and their properties.
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