The DOI matches its Crossref record; 2 of the 2 references it cites were found in a registry or an index.
Quantum non-demolition measurement of a superconducting two-level system
Open accessAbstract
In quantum mechanics, the process of measurement is a subtle interplay between extraction of information and disturbance of the state of the quantum system. A quantum non-demolition (QND) measurement minimizes this disturbance by using a particular system—detector interaction that preserves the eigenstates of a suitable operator of the quantum system. This leads to an ideal projective measurement. We present experiments in which we carry out two consecutive measurements on a quantum two-level system, a superconducting flux qubit, by probing the hysteretic behaviour of a coupled nonlinear resonator. The large correlation between the results of the two measurements demonstrates the QND nature of the readout method. The fact that a QND measurement is possible for superconducting qubits strengthens the notion that these fabricated mesoscopic systems are to be regarded as fundamental quantum objects. Our results are also relevant for quantum-information processing for protocols such as state preparation and error correction.
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Citations
Cites
Strong coupling of a single photon to a superconducting qubit using circuit quantum electrodynamics
Wallraff, A., Schuster, D. I., Blais, A., Frunzio, L., Huang, R. S., Majer, J., Kumar, S., Girvin, S. M., & Schoelkopf, R. J. (2004) · Nature · doi:10.1038/nature02851 · Cited by 3,796
Peil, S., & Gabrielse, G. (1999) · Physical Review Letters · doi:10.1103/physrevlett.83.1287 · Cited by 209
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
Clarke, J., & Wilhelm, F. K. (2008) · Nature · doi:10.1038/nature07128 · Cited by 2,076
Quantum annealing with manufactured spins
Johnson, M. W., Amin, M. H. S., Gildert, S., Lanting, T., Hamze, F., Dickson, N., Harris, R., Berkley, A. J., Johansson, J., Bunyk, P., et al. (2011) · Nature · doi:10.1038/nature10012 · Cited by 1,891
Atomic physics and quantum optics using superconducting circuits
You, J. Q., & Nori, F. (2011) · Nature · doi:10.1038/nature10122 · Cited by 1,311
Microwave photonics with superconducting quantum circuits
Gu, X., Kockum, A. F., Miranowicz, A., Liu, Y.-X., & Nori, F. (2017) · Physics Reports · doi:10.1016/j.physrep.2017.10.002 · Cited by 1,307
Metadata
- Authors
- Lupaşcu, A., Saito, S., Picot, T., de Groot, P. C., Harmans, C. J. P. M., & Mooij, J. E.
- Venue
- Nature Physics
- Published
- 2007-01-14
- Volume
- 3
- Issue
- 2
- Pages
- 119-123
- ISSN
- 1745-2473 (ISSN-L)
- 1745-2481
- OpenAlex
- W2155144488
- Cited by
- 251
- References
- 2
- FWCI
- 29.55
- Type
- journal article
- Language
- en
- Open access
- green
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