Majorana Entanglement Bridge
arXiv:1503.06399 · doi:10.1103/PhysRevB.91.214507
Abstract
We study the concurrence of entanglement between two quantum dots in contact to Majorana bound states on a floating superconducting island. The distance between the Majorana states, the charging energy of the island, and the average island charge are shown to be decisive parameters for the efficiency of entanglement generation. We find that long-range entanglement with basically distance-independent concurrence is possible over wide parameter regions, where the proposed setup realizes a "Majorana entanglement bridge". We also study the time-dependent concurrence obtained after one of the tunnel couplings is suddenly switched on, which reveals the timescales for generating entanglement. Accurate analytical expressions for the concurrence are derived both for the static and the time-dependent case. Our results indicate that entanglement formation in interacting Majorana devices can be fully understood in terms of an interplay of elastic cotunneling (also referred to as "teleportation") and crossed Andreev reflection processes.
16 pages, 8 figures, version to appear in PRB
References in corpus (49)
- Quantum entanglement
- Signatures of Majorana fermions in hybrid superconductor-semiconductor nanowire devices
- New directions in the pursuit of Majorana fermions in solid state systems
- Evidence of Majorana fermions in an Al - InAs nanowire topological superconductor
- Observation of Majorana Fermions in Ferromagnetic Atomic Chains on a Superconductor
- A generic new platform for topological quantum computation using semiconductor heterostructures
- Search for Majorana fermions in superconductors
- Observation of Majorana Fermions in a Nb-InSb Nanowire-Nb Hybrid Quantum Device
- Quantum Communication Through an Unmodulated Spin Chain
- Observation of the fractional ac Josephson effect: the signature of Majorana particles
- Introduction to topological superconductivity and Majorana fermions
- Superconductor-Nanowire Devices from Tunneling to the Multichannel Regime: Zero-Bias Oscillations and Magnetoconductance Crossover
- Spin-resolved Andreev levels and parity crossings in hybrid superconductor-semiconductor nanostructures
- Schrieffer-Wolff transformation for quantum many-body systems
- Andreev-Tunneling, Coulomb Blockade, and Resonant Transport of Non-Local Spin-Entangled Electrons
- Splitting of a Cooper pair by a pair of Majorana bound states
- Electron Teleportation via Majorana Bound States in a Mesoscopic Superconductor
- Flux-controlled quantum computation with Majorana fermions
- Electronic Entanglement in the Vicinity of a Superconductor
- Observing Majorana Bound States in p-wave Superconductors Using Noise Measurements in Tunneling Experiments
- Probing Entanglement and Non-locality of Electrons in a Double-Dot via Transport and Noise
- Non-Abelian operations on Majorana fermions via single charge control
- Orbital entanglement and violation of Bell inequalities in mesoscopic conductors
- Bell inequalities and entanglement in solid state devices
- Topological Kondo effect with Majorana fermions
- Anyonic interferometry without anyons: How a flux qubit can read out a topological qubit
- Electron counting in quantum dots
- Universal quantum computation on a semiconductor quantum wire network
- Quantum information transfer between topological and spin qubit systems
- Topological quantum buses: coherent quantum information transfer between topological and conventional qubits
- Multi-Terminal Coulomb-Majorana Junction
- Interface Between Topological and Superconducting Qubits
- Testable signatures of quantum non-locality in a two-dimensional chiral p-wave superconductor
- Majorana-Klein hybridization in topological superconductor junctions
- Majorana single-charge transistor
- Coulomb blockade of Majorana fermion induced transport
- Multi-channel Kondo impurity dynamics in a Majorana device
- Entanglement Routers Using Macroscopic Singlets
- Entanglement detection from conductance measurements in carbon nanotube Cooper pair splitters
- Coupling spin qubits via superconductors
- Kondo Cloud Mediated Long Range Entanglement After Local Quench in a Spin Chain
- Detecting entanglement using a double quantum dot turnstile
- Detecting Majorana fermions by nonlocal entanglement between quantum dots
- Transport properties of the Coulomb-Majorana junction
- Using hybrid topological-spin qubit systems for two-qubit-spin gates
- Bell states and entanglement dynamics on two coupled quantum molecules
- Even-odd parity effects in Majorana junctions
- Demonstrating Entanglement by Testing Bell's Theorem in Majorana Wires
- Teleportation-induced entanglement of two nanomechanical oscillators coupled to a topological superconductor
Cited by in corpus (11)
- Towards realistic implementations of a Majorana surface code
- Roadmap to Majorana surface codes
- Measurement-only quantum computation with Majorana corner modes
- Kondo physics from quasiparticle poisoning in Majorana devices
- Enhanced current noise correlations in a Coulomb-Majorana device
- Non-Kondo many-body physics in a Majorana-based Kondo type system
- Quantum transport in coupled Majorana box systems
- Majorana correlations in quantum impurities coupled to a topological wire
- Entangled states of two quantum dots mediated by Majorana fermions
- Non-Equilibrium Charge Dynamics in Majorana-Josephson Devices
- Entanglement dynamics in minimal Kitaev chains