Bulletin of the American Physical Society
2023 APS March Meeting
Volume 68, Number 3
Las Vegas, Nevada (March 5-10)
Virtual (March 20-22); Time Zone: Pacific Time
Session Z02: Experimental Advances and Open Quantum Systems in the Thermodynamic Regime
11:30 AM–2:18 PM,
Friday, March 10, 2023
Room: Room 125
Sponsoring
Units:
GSNP DQI
Chair: Gabriel Landi, University of Rochester
Abstract: Z02.00011 : Rabi enhanced tunneling from solid-state spin qubits: a Lindblad equation for Rabi driven spins in tunneling contact with a reservoir*
1:30 PM–1:42 PM
Presenter:
Emily A Townsend
(National Institute of Standards and Tech)
Authors:
Emily A Townsend
(National Institute of Standards and Tech)
Joshua Pomeroy
(National Institute of Standards and Tech)
Garnett W Bryant
(National Institute of Standards and Technology)
However, for a spin in a solid-state qubit, driving Rabi oscillations with an oscillating magnetic field yields a time-dependent Hamiltonian. If an electron experiencing this Rabi driving also has a weak tunneling contact to a nearby lead, there should be a Lindblad equation describing this driven-dissipative behavior. We have used the unitary time evolution operator that solves the Rabi problem to transform into the interaction picture with respect to the system Hamiltonian, which, along with typical assumptions about the bath and the secular approximation, gives a matrix form of the Lindblad equation. This equation predicts that the Rabi driving can enhance emptying of the dot while maintaining the lead chemical potential at the average energy of the two Zeeman-split energy levels (spin up and spin down). The enhanced rate could have implications for the performance of spin-based quantum computation. Eliminating the need for large excursions of the applied voltage for emptying the dot could reduce errors.
This Lindblad equation may also see application in spin-informed scanning tunneling microscopy (STM), in which the tip of an STM is enhanced by adding a single spin on the end for magnetic sensing.
*This research was supported in part by the National Science Foundation under Grant No. NSF PHY-1748958.
Follow Us |
Engage
Become an APS Member |
My APS
Renew Membership |
Information for |
About APSThe American Physical Society (APS) is a non-profit membership organization working to advance the knowledge of physics. |
© 2024 American Physical Society
| All rights reserved | Terms of Use
| Contact Us
Headquarters
1 Physics Ellipse, College Park, MD 20740-3844
(301) 209-3200
Editorial Office
100 Motor Pkwy, Suite 110, Hauppauge, NY 11788
(631) 591-4000
Office of Public Affairs
529 14th St NW, Suite 1050, Washington, D.C. 20045-2001
(202) 662-8700