Entanglement in a Quantum Annealing Processor
Abstract
Entanglement lies at the core of quantum algorithms designed to solve problems that are intractable by classical approaches. One such algorithm, quantum annealing (QA), provides a promising path to a practical quantum processor. We have built a series of architecturally scalable QA processors consisting of networks of manufactured interacting spins (qubits). Here, we use qubit tunneling spectroscopy to measure the energy eigen spectrum of two- and eight-qubit systems within one such processor, demonstrating quantum coherence in these systems. We present experimental evidence that, during a critical portion of QA, the qubits become entangled and entanglement persists even as these systems reach equilibrium with a thermal environment. Our results provide an encouraging sign that QA is a viable technology for large scale quantum computing.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 07, 2016
- Accession Number
- AD1011364
Entities
People
- A J Berkley
- A. B. Wilson
- A. J. Przybysz
- A. Y. Smirnov
- C. Enderud
- Charles Rich
- E. Hoskinson
- E. Ladizinsky
- E. Tolkacheva
- F. Altomare
- F. M. Spedalieri
- G. Rose
- I. Perminov
- J. P. Hilton
- M. C. Thom
- M. H. Amin
- M. W. Johnson
- N. Dickson
- N. Ladizinsky
- P. Bunyk
- R. Harris
- R. Neufeld
- S. Boixo
- S. Uchaikin
- T. Lanting
- T. Oh
Organizations
- D-Wave Systems