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Coherent dynamics of a flux qubit coupled to a harmonic oscillator
Open accessAbstract
In the emerging field of quantum computation and quantum information, superconducting devices are promising candidates for the implementation of solid-state quantum bits (qubits). Single-qubit operations, direct coupling between two qubits and the realization of a quantum gate have been reported. However, complex manipulation of entangled states—such as the coupling of a two-level system to a quantum harmonic oscillator, as demonstrated in ion/atom-trap experiments and cavity quantum electrodynamics—has yet to be achieved for superconducting devices. Here we demonstrate entanglement between a superconducting flux qubit (a two-level system) and a superconducting quantum interference device (SQUID). The latter provides the measurement system for detecting the quantum states; it is also an effective inductance that, in parallel with an external shunt capacitance, acts as a harmonic oscillator. We achieve generation and control of the entangled state by performing microwave spectroscopy and detecting the resultant Rabi oscillations of the coupled system.
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Cites
Quantum Computation and Quantum Information
Nielsen, M. A., Chuang, I., & Grover, L. K. (2002) · American Journal of Physics · doi:10.1119/1.1463744 · Cited by 21,895
Controlled collisions for multi-particle entanglement of optically trapped atoms
Mandel, O., Greiner, M., Widera, A., Rom, T., Hänsch, T. W., & Bloch, I. (2003) · Nature · doi:10.1038/nature02008 · Cited by 789
Cited by
Ladd, T. D., Jelezko, F., Laflamme, R., Nakamura, Y., Monroe, C., & O’Brien, J. L. (2010) · Nature · doi:10.1038/nature08812 · Cited by 3,592
Self-citationStrong coupling between surface plasmon polaritons and emitters: a review
Törmä, P., & Barnes, W. L. (2015) · Reports on Progress in Physics · doi:10.1088/0034-4885/78/1/013901 · Cited by 1,644
Hybrid quantum circuits: Superconducting circuits interacting with other quantum systems
Xiang, Z.-L., Ashhab, S., You, J. Q., & Nori, F. (2013) · Reviews of Modern Physics · doi:10.1103/revmodphys.85.623 · Cited by 1,514
Circuit quantum electrodynamics in the ultrastrong-coupling regime
Niemczyk, T., Deppe, F., Huebl, H., Menzel, E. P., Hocke, F., Schwarz, M. J., Garcia-Ripoll, J. J., Zueco, D., Hümmer, T., Solano, E., et al. (2010) · Nature Physics · doi:10.1038/nphys1730 · Cited by 1,324
Atomic physics and quantum optics using superconducting circuits
You, J. Q., & Nori, F. (2011) · Nature · doi:10.1038/nature10122 · Cited by 1,311
Metadata
- Authors
- Chiorescu, I., Bertet, P., Semba, K., Nakamura, Y., Harmans, C. J. P. M., & Mooij, J. E.
- Venue
- Nature
- Published
- 2004-09
- Volume
- 431
- Issue
- 7005
- Pages
- 159-162
- ISSN
- 0028-0836 (ISSN-L)
- 1476-4687
- OpenAlex
- W1969587259
- Cited by
- 749
- References
- 2
- FWCI
- 49.82
- Type
- journal article
- Language
- en
- Open access
- green
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- Chiorescu, I., Bertet, P., Semba, K., Nakamura, Y., Harmans, C. J. P. M., & Mooij, J. E. (2004). Coherent dynamics of a flux qubit coupled to a harmonic oscillator. Nature. https://doi.org/10.1038/nature02831
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