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Detection of Quantum Noise from an Electrically Driven Two-Level System
Open accessAbstract
The electrical noise of mesoscopic devices can be strongly influenced by the quantum motion of electrons. To probe this effect, we have measured the current fluctuations at high frequency (5 to 90 gigahertz) using a superconductor-insulator-superconductor tunnel junction as an on-chip spectrum analyzer. By coupling this frequency-resolved noise detector to a quantum device, we can measure the high-frequency, nonsymmetrized noise as demonstrated for a Josephson junction. The same scheme is used to detect the current fluctuations arising from coherent charge oscillations in a two-level system, a superconducting charge qubit. A narrow band peak is observed in the spectral noise density at the frequency of the coherent charge oscillations.
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Citations
Cited by
Cooling a nanomechanical resonator with quantum back-action
Naik, A., Buu, O., LaHaye, M. D., Armour, A. D., Clerk, A. A., Blencowe, M. P., & Schwab, K. C. (2006) · Nature · doi:10.1038/nature05027 · Cited by 543
Coherent and collective quantum optical effects in mesoscopic systems
Brandes, T. (2005) · Physics Reports · doi:10.1016/j.physrep.2004.12.002 · Cited by 434
Quantum Noise in the Josephson Charge Qubit
Astafiev, O., Pashkin, Y., Nakamura, Y., Yamamoto, T., & Tsai, J. (2004) · Physical Review Letters · doi:10.1103/physrevlett.93.267007 · Cited by 288
Photon-assisted electron transport in graphene: Scattering theory analysis
Trauzettel, B., Blanter, Y. M., & Morpurgo, A. F. (2007) · Physical Review B · doi:10.1103/physrevb.75.035305 · Cited by 95
Metadata
- Authors
- Deblock, R., Onac, E., Gurevich, L., & Kouwenhoven, L. P.
- Venue
- Science
- Published
- 2003-07-11
- Volume
- 301
- Issue
- 5630
- Pages
- 203-206
- ISSN
- 0036-8075 (ISSN-L)
- 1095-9203
- OpenAlex
- W2086585641
- Cited by
- 176
- References
- 0
- FWCI
- 8.86
- Type
- journal article
- Language
- en
- Open access
- green
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- Deblock, R., Onac, E., Gurevich, L., & Kouwenhoven, L. P. (2003). Detection of Quantum Noise from an Electrically Driven Two-Level System. Science. https://doi.org/10.1126/science.1084175
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