Quantum signature of exciton condensation

Abstract

Exciton condensation, a Bose-Einstein-like condensation of excitons, was recently reported in an electronic double layer (EDL) of graphene. We show that a universal quantum signature for exciton condensation can be used to both identity and quantify exciton condensation in molecular systems from direct calculations of the two-electron reduced density matrix. Computed large eigenvalues in the particle-hole reduced-density matrices of pentacene and hexacene EDLs reveal the beginnings of condensation, suggesting the potential for exciton condensation in smaller scale molecular EDLs.

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Cited by in corpus (15)

• Quantum-classical hybrid algorithm using an error-mitigating $N$-representability condition to compute the Mott metal-insulator transition
• Quantum Many-body Theory from a Solution of the $N$-representability Problem
• Preparation of an Exciton Condensate of Photons on a 53-Qubit Quantum Computer
• Experimental Data from a Quantum Computer Verifies the Generalized Pauli Exclusion Principle
• Dual-Cone Variational Calculation of the 2-Electron Reduced Density Matrix
• Potential Coexistence of Exciton and Fermion Pair Condensations
• Cooper-Pair Condensates with Non-Classical Long-Range Order on Quantum Devices
• Large Cumulant Eigenvalue as a Signature of Exciton Condensation
• Beginnings of Exciton Condensation in Coronene Analog of Graphene Double Layer
• Entangled phase of simultaneous fermion and exciton condensations realized
• Correlation-Driven Phenomena in Periodic Molecular Systems from Variational Two-electron Reduced Density Matrix Theory
• Simultaneous fermion and exciton condensations from a model Hamiltonian
• Quantum Phase Transitions in a Model Hamiltonian Exhibiting Entangled Simultaneous Fermion-Pair and Exciton Condensations
• Orthogonalization of fermion k-body operators and representability
• Representability for Quantum Theory beyond Particle-Number Conservation