Journal
PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES
Volume 370, Issue 1976, Pages 4671-4689Publisher
ROYAL SOC
DOI: 10.1098/rsta.2011.0358
Keywords
nuclear magnetic resonance; composite pulses; geometric phases; geometric quantum gates; quantum control
Categories
Funding
- 'Open Research Center' Project for Private Universities
- MEXT (Ministry of Education, Culture, Sports, Science and Technology), Japan
- JSPS [23540470]
- Grants-in-Aid for Scientific Research [23540470] Funding Source: KAKEN
Ask authors/readers for more resources
Unitary operations acting on a quantum system must be robust against systematic errors in control parameters for reliable quantum computing. Composite pulse technique in nuclear magnetic resonance realizes such a robust operation by employing a sequence of possibly poor-quality pulses. In this study, we demonstrate that two kinds of composite pulses-one compensates for a pulse length error in a one-qubit system and the other compensates for a J-coupling error in a two-qubit system-have a vanishing dynamical phase and thereby can be seen as geometric quantum gates, which implement unitary gates by the holonomy associated with dynamics of cyclic vectors defined in the text.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available