Выдержка
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 eigenspectrum 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 largescale quantum computing.
| Язык оригинала | Английский |
|---|---|
| Номер статьи | 021041 |
| Журнал | Physical Review X |
| Том | 4 |
| Номер выпуска | 2 |
| DOI | |
| Состояние | Опубликовано - 2014 |
Отпечаток
ASJC Scopus subject areas
- Physics and Astronomy(all)
Цитировать
Entanglement in a quantum annealing processor. / Lanting, T.; Przybysz, A. J.; Smirnov, A. Yu; Spedalieri, F. M.; Amin, M. H.; Berkley, A. J.; Harris, R.; Altomare, F.; Boixo, S.; Bunyk, P.; Dickson, N.; Enderud, C.; Hilton, J. P.; Hoskinson, E.; Johnson, M. W.; Ladizinsky, E.; Ladizinsky, N.; Neufeld, R.; Oh, T.; Perminov, I.; Rich, C.; Thom, M. C.; Tolkacheva, E.; Uchaikin, S.; Wilson, A. B.; Rose, G.
В: Physical Review X, Том 4, № 2, 021041, 2014.Результат исследований: Материалы для журнала › Статья
}
TY - JOUR
T1 - Entanglement in a quantum annealing processor
AU - Lanting, T.
AU - Przybysz, A. J.
AU - Smirnov, A. Yu
AU - Spedalieri, F. M.
AU - Amin, M. H.
AU - Berkley, A. J.
AU - Harris, R.
AU - Altomare, F.
AU - Boixo, S.
AU - Bunyk, P.
AU - Dickson, N.
AU - Enderud, C.
AU - Hilton, J. P.
AU - Hoskinson, E.
AU - Johnson, M. W.
AU - Ladizinsky, E.
AU - Ladizinsky, N.
AU - Neufeld, R.
AU - Oh, T.
AU - Perminov, I.
AU - Rich, C.
AU - Thom, M. C.
AU - Tolkacheva, E.
AU - Uchaikin, S.
AU - Wilson, A. B.
AU - Rose, G.
PY - 2014
Y1 - 2014
N2 - 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 eigenspectrum 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 largescale quantum computing.
AB - 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 eigenspectrum 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 largescale quantum computing.
KW - Quantum information
KW - Quantum physics
KW - Superconductivity
UR - http://www.scopus.com/inward/record.url?scp=84903475699&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84903475699&partnerID=8YFLogxK
U2 - 10.1103/PhysRevX.4.021041
DO - 10.1103/PhysRevX.4.021041
M3 - Article
AN - SCOPUS:84903475699
VL - 4
JO - Physical Review X
JF - Physical Review X
SN - 2160-3308
IS - 2
M1 - 021041
ER -