Bulletin of the American Physical Society
APS March Meeting 2018
Monday–Friday, March 5–9, 2018; Los Angeles, California
Session C28: Silicon Spin Qubits
2:30 PM–5:30 PM,
Monday, March 5, 2018
LACC Room: 405
Sponsoring Unit: DQI
Chair: Susan Coppersmith, Univ of Wisconsin, Madison
Abstract: C28.00012 : Non-equilibrium Si Valley Quantum Dots : Devices and Spectroscopy
5:06 PM–5:18 PM
(University of Konstanz)
Motivated by the recent experiment on highly resolved valley spectroscopy for Si double quantum dots  in a circuit-QED architecture, we show that  such setups have the potential to perform as excellent quantum devices (for e.g, microwave amplifiers). We investigate this setup by employing the diagrammatic Keldysh Non-equilibrium Greens function's approach [3,4] and study the gain in the microwave photon transmission. This diagrammatic technique further provides a systematic and transparent way to understand the small energy/valley splitting in the low-lying Si energy states as captured in the transmission spectroscopy via multiple dips .
 X. Mi, C. G. Peterfalvi, G. Burkard, and J. R. Petta, Phys. Rev. Lett. 119, 176803 (2017).
 B. K. Agarwalla, M. Kulkarni, and G. Burkard, (in preparation).
 B. K. Agarwalla, M. Kulkarni, S. Mukamel, and D. Segal, Phys. Rev. B 94, 035434 (2016).
 B. K. Agarwalla, M. Kulkarni, S. Mukamel, and D. Segal, Phys. Rev. B 94, 121305(R) (2016).
 G. Burkard and J. R. Petta, Phys. Rev. B 94, 195305 (2016).
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