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Broadband parametric amplification with impedance engineering: Beyond the gain-bandwidth product
Open accessAbstract
We present an impedance engineered Josephson parametric amplifier capable of providing bandwidth beyond the traditional gain-bandwidth product. We achieve this by introducing a positive linear slope in the imaginary component of the input impedance seen by the Josephson oscillator using a λ/2 transformer. Our theoretical model predicts an extremely flat gain profile with a bandwidth enhancement proportional to the square root of amplitude gain. We experimentally demonstrate a nearly flat 20 dB gain over a 640 MHz band, along with a mean 1-dB compression point of −110 dBm and near quantum-limited noise. The results are in a good agreement with our theoretical model.
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Cites
Surface codes: Towards practical large-scale quantum computation
Fowler, A. G., Mariantoni, M., Martinis, J. M., & Cleland, A. N. (2012) · Physical Review A · doi:10.1103/physreva.86.032324 · Cited by 3,059
Cited by
Superconducting Qubits: Current State of Play
Kjaergaard, M., Schwartz, M. E., Braumüller, J., Krantz, P., Wang, J. I.-J., Gustavsson, S., & Oliver, W. D. (2020) · Annual Review of Condensed Matter Physics · doi:10.1146/annurev-conmatphys-031119-050605 · Cited by 1,544
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
- Roy, T., Kundu, S., Chand, M., Vadiraj, A. M., Ranadive, A., Nehra, N., Patankar, M. P., Aumentado, J., Clerk, A. A., & Vijay, R.
- Venue
- Applied Physics Letters
- Publisher
- AIP Publishing
- Published
- 2015-12-28
- Volume
- 107
- Issue
- 26
- ISSN
- 0003-6951 (ISSN-L)
- 1077-3118
- OpenAlex
- W2201402023
- Cited by
- 172
- References
- 1
- FWCI
- 6.17
- Type
- journal article
- Language
- en
- Open access
- green
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- Roy, T., Kundu, S., Chand, M., Vadiraj, A. M., Ranadive, A., Nehra, N., Patankar, M. P., Aumentado, J., Clerk, A. A., & Vijay, R. (2015). Broadband parametric amplification with impedance engineering: Beyond the gain-bandwidth product. Applied Physics Letters. https://doi.org/10.1063/1.4939148
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