Signatures of Quantum Phase Transitions via Quantum Information Theoretic Measures

Bose, I.; Tribedi, Amit

doi:10.1007/978-3-642-11470-0_8

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2013

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Cited by 3 publications

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“…Recent years have witnessed a surge in research activity involving a close interaction between the subjects of quantum information science and many body condensed matter physics [1][2][3][4] . The key concept in quantum information is that of entanglement, a truly unique feature of quantum mechanical systems.…”

Section: Introductionmentioning

confidence: 99%

Collapse and revival of entanglement of two-qubit in superconducting quantum dot lattice with magnetic flux and inhomogeneous gate voltage

Sarkar

2013

Physica B: Condensed Matter

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We study the entanglement of a two-qubit system in a superconducting quantum dot (SQD) lattice in the presence of magnetic flux and gate voltage inhomogeneity. We observe a universal feature for the half-integer magnetic flux quantum which completely washes out the entanglement of the system both at zero and finite temperature. We observe that the ground state is always in a maximally entangled Bell state when there is no inhomogeneity in gate voltage in the superconducting quantum dot lattice. We find an important constraint in magnetic flux for ground state entanglement. We also observe few behavior of entanglement at finite temperature is in contrast with the zero temperature behavior.PACS numbers: 03.65.. Ud, Entanglement and quantum nonlocality.

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Section: Introductionmentioning

confidence: 99%

Collapse and revival of entanglement of two-qubit in superconducting quantum dot lattice with magnetic flux and inhomogeneous gate voltage

Sarkar

2013

Physica B: Condensed Matter

View full text Add to dashboard Buy / Rent full text

show abstract

Signatures of Quantum Phase Transitions via Quantum Information Theoretic Measures

Cited by 3 publications

References 69 publications

Collapse and revival of entanglement of two-qubit in superconducting quantum dot lattice with magnetic flux and inhomogeneous gate voltage

Collapse and revival of entanglement of two-qubit in superconducting quantum dot lattice with magnetic flux and inhomogeneous gate voltage

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