Simulating long-distance entanglement in quantum spin chains by superconducting flux qubits
arXiv:1410.5444 · doi:10.1103/PhysRevA.91.022315
Abstract
We investigate the performance of superconducting flux qubits for the adiabatic quantum simulation of long distance entanglement (LDE), namely a finite ground-state entanglement between the end spins of a quantum spin chain with open boundary conditions. As such, LDE can be considered an elementary precursor of edge modes and topological order. We discuss two possible implementations which simulate open chains with uniform bulk and weak end bonds, either with Ising or with XX nearest-neighbor interactions. In both cases we discuss a suitable protocol for the adiabatic preparation of the ground state in the physical regimes featuring LDE. In the first case the adiabatic manipulation and the Ising interactions are realized using dc currents, while in the second case microwaves fields are used to control the smoothness of the transformation and to realize the effective XX interactions. We demonstrate the adiabatic preparation of the end-to-end entanglement in chains of four qubits with realistic parameters and on a relatively fast time scale.
12 pages, 14 figures. Final manuscript, close to the published version
References in corpus (47)
- Unpaired Majorana fermions in quantum wires
- Circuit Quantum Electrodynamics: Coherent Coupling of a Single Photon to a Cooper Pair Box
- Quantum state engineering with Josephson-junction devices
- Quantum state transfer and entanglement distribution among distant nodes in a quantum network
- A Quantum Adiabatic Evolution Algorithm Applied to Random Instances of an NP-Complete Problem
- Quantum Communication Through an Unmodulated Spin Chain
- Atomic physics and quantum optics using superconducting circuits
- Tensor-Entanglement-Filtering Renormalization Approach and Symmetry Protected Topological Order
- Dynamical decoupling and noise spectroscopy with a superconducting flux qubit
- Symmetry protection of topological order in one-dimensional quantum spin systems
- A Superconducting Persistent Current Qubit
- Shortcuts to adiabaticity
- Preparation and Measurement of Three-Qubit Entanglement in a Superconducting Circuit
- High-fidelity quantum driving
- Observation of measurement-induced entanglement and quantum trajectories of remote superconducting qubits
- Controllable coupling of superconducting flux qubits
- Two-Qubit State Tomography using a Joint Dispersive Read-Out
- Long-distance entanglement in spin systems
- Flux Qubits with Long Coherence Times for Hybrid Quantum Circuits
- Evidence for entangled states of two coupled flux qubits
- Statistical mechanics of the Cluster-Ising model
- Long-distance entanglement and quantum teleportation in XX spin chains
- Entanglement Metrology Using a Joint Readout of Superconducting Qubits
- Entanglement dynamics in chains of qubits with noise and disorder
- Four-qubit device with mixed couplings
- Phase diagram and quench dynamics of the Cluster-XY spin chain
- Tomographic measurements on superconducting qubit states
- Direct Josephson coupling between superconducting flux qubits
- Long-distance entanglement in many-body atomic and optical systems
- Possible implementation of adiabatic quantum algorithm with superconducting flux qubits
- Long-distance entanglement and quantum teleportation in coupled cavity arrays
- Radio-Frequency Method for Investigation of Quantum Properties of Superconducting Structures
- Entanglement replication in driven-dissipative many body systems
- Reading-out the state inductively and microwave spectroscopy of an interferometer-type charge qubit
- Tunable-Cavity QED with Phase Qubits
- Modular Entanglement
- Local characterization of 1d topologically ordered states
- Tuned transition from quantum to classical for macroscopic quantum states
- Adiabatic quantum simulation with a segmented ion trap: Application to long-distance entanglement in quantum spin systems
- Quantum state detection of a superconducting flux qubit using a DC-SQUID in the inductive mode
- Method for direct observation of coherent quantum oscillations in a superconducting phase qubit
- Non-Markovian dynamics and steady-state entanglement of cavity arrays in finite-bandwidth squeezed reservoirs
- Entanglement of distant atoms by projective measurement: The role of detection efficiency
- Measurement of the ground-state flux diagram of three coupled qubits as a first step towards the demonstration of adiabatic quantum computation
- Dispersive Charge and Flux Qubit Readout as a Quantum Measurement Process
- Time-resolved qubit readout via nonlinear Josephson inductance
- Surface Entanglement in Quantum Spin Networks
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- Global-to-local incompatibility, monogamy of entanglement, and ground-state dimerization: Theory and observability of quantum frustration in systems with competing interactions
- Factorization in XYZ spin systems under general fields and separable ground state engineering
- Entanglement replication via quantum repeated interactions
- Enhancement of microwave squeezing via parametric down-conversion in a superconducting quantum circuit
- Generation of complete graph states in a spin- Heisenberg chain with a globally optimized magnetic field
- Adiabatic freezing of long-range quantum correlations in spin chains