Testable Signatures of Quantum Nonlocality in a Two-Dimensional Chiralp-Wave Superconductor

2007/03/31 by Sumanta Tewari, Chuanwei Zhang, S. Das Sarma +3 · 99 citations
Physics and Astronomy · #Advanced Condensed Matter Physics #Causality (physics) #Cold Atom Physics and Bose-Einstein Condensates #Condensed matter physics #Fermion #Physics #Quantum #Quantum entanglement #Quantum mechanics #Quantum nonlocality #Quantum tunnelling #Quantum, superfluid, helium dynamics #Quasiparticle #Superconductivity #Vortex #cond-mat.mes-hall #cond-mat.str-el

paper · pdf · doi:10.1103/physrevlett.100.027001

published in Physical Review Letters 100(2), 027001 (American Physical Society) · 4 pages, 2 eps figures, typos corrected, new section added on possible experiments in atomic superfluids; version accepted for publication in PRL

arxiv created 2007/12/05 · openalex publication_date 2008/01/17 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

A class of topological excitations-the odd-winding number vortices-in a spinless 2D chiral p-wave (px+ipy) superconductor traps Majorana fermion states in the vortex cores. For a dilute gas of such vortices, the lowest energy fermionic eigenstates are intrinsically nonlocal. We predict two testable signatures of this unusual quantum nonlocality in quasiparticle tunneling experiments. We discuss why the associated teleportationlike phenomenon does not imply the violation of causality.

Citations

• Phase-Sensitive Tests of the Pairing State Symmetry inSr2RuO4
• Zero modes of two-dimensional chiralp-wave superconductors
• 2n-quasihole states realize 2n−1-dimensional spinor braiding statistics in paired quantum Hall states
• Fusion rules and vortices inpx+ipysuperconductors
• Anisotropic Fermi Superfluid viap-Wave Feshbach Resonance
• Fault-tolerant quantum computation by anyons
• Observing Majorana bound States inp-Wave Superconductors Using Noise Measurements in Tunneling Experiments

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• Interferometric and Noise Signatures of Majorana Fermion Edge States in Transport Experiments
• Majorana Single-Charge Transistor
• Squeezing light with Majorana fermions
• Majorana Fermions and Topology in Superconductors
• px+ipySuperfluid froms-Wave Interactions of Fermionic Cold Atoms
• Majorana fermions in semiconductor nanowires