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Fast Quantum Nondemolition Readout by Parametric Modulation of Longitudinal Qubit-Oscillator Interaction
Open accessAbstract
We show how to realize fast and high-fidelity quantum nondemolition qubit readout using longitudinal qubit-oscillator interaction. This is accomplished by modulating the longitudinal coupling at the cavity frequency. The qubit-oscillator interaction then acts as a qubit-state dependent drive on the cavity, a situation that is fundamentally different from the standard dispersive case. Single-mode squeezing can be exploited to exponentially increase the signal-to-noise ratio of this readout protocol. We present an implementation of this longitudinal parametric readout in circuit quantum electrodynamics and a possible multiqubit architecture.
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Citations
Cites
Controlling the Spontaneous Emission of a Superconducting Transmon Qubit
Houck, A. A., Schreier, J. A., Johnson, B. R., Chow, J. M., Koch, J., Gambetta, J. M., Schuster, D. I., Frunzio, L., Devoret, M. H., Girvin, S. M., et al. (2008) · Physical Review Letters · doi:10.1103/physrevlett.101.080502 · Cited by 501
Cited by
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
Universal Gate for Fixed-Frequency Qubits via a Tunable Bus
McKay, D. C., Filipp, S., Mezzacapo, A., Magesan, E., Chow, J. M., & Gambetta, J. M. (2016) · Physical Review Applied · doi:10.1103/physrevapplied.6.064007 · Cited by 321
Building a Fault-Tolerant Quantum Computer Using Concatenated Cat Codes
Chamberland, C., Noh, K., Arrangoiz-Arriola, P., Campbell, E. T., Hann, C. T., Iverson, J., Putterman, H., Bohdanowicz, T. C., Flammia, S. T., Keller, A., et al. (2022) · PRX Quantum · doi:10.1103/prxquantum.3.010329 · Cited by 281
Practical Quantum Error Correction with the XZZX Code and Kerr-Cat Qubits
Darmawan, A. S., Brown, B. J., Grimsmo, A. L., Tuckett, D. K., & Puri, S. (2021) · PRX Quantum · doi:10.1103/prxquantum.2.030345 · Cited by 2
Metadata
- Authors
- Didier, N., Bourassa, J., & Blais, A.
- Venue
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Published
- 2015-11-09
- Volume
- 115
- Issue
- 20
- Pages
- 203601-203601
- ISSN
- 0031-9007 (ISSN-L)
- 1079-7114
- OpenAlex
- W1729661800
- Cited by
- 189
- References
- 1
- FWCI
- 13.45
- Type
- journal article
- Language
- en
- Open access
- green
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- Didier, N., Bourassa, J., & Blais, A. (2015). Fast Quantum Nondemolition Readout by Parametric Modulation of Longitudinal Qubit-Oscillator Interaction. Physical Review Letters. https://doi.org/10.1103/physrevlett.115.203601
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