Time-optimal control by a quantum actuator
Name
PhysRevA.91.042340.pdf
Size
729.21 KB
Format
Adobe PDF
Checksum (MD5)
7087f28444461ea8d2c3dc4a608bf15d
Author(s)
Aiello, Clarice Demarchi
Cappellaro, Paola
Date Issued
April 2015
Journal
Physical Review A
Publisher
American Physical Society
Citation
Aiello, Clarice D., and Paola Cappellaro. "Time-optimal control by a quantum actuator." Phys. Rev. A 91, 042340 (April 2015). © 2015 American Physical Society
Version
Final published version
Abstract
Indirect control of qubits by a quantum actuator has been proposed as an appealing strategy to manipulate qubits that couple only weakly to external fields. While universal quantum control can be easily achieved when the actuator-qubit coupling is anisotropic, the efficiency of this approach is less clear. Here we analyze the time efficiency of quantum actuator control. We describe a strategy to find time-optimal control sequences by the quantum actuator and compare their gate times with direct driving, identifying regimes where the actuator control performs faster. As a paradigmatic example, we focus on a specific implementation based on the nitrogen-vacancy center electronic spin in diamond (the actuator) and nearby [superscript 13]C nuclear spins (the qubits).
MIT Department
Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science
Massachusetts Institute of Technology. Department of Nuclear Science and Engineering
Massachusetts Institute of Technology. Research Laboratory of Electronics
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1103/PhysRevA.91.042340
