Departmental Colloquium
- Title
- Quantum computing with Bose--Einstein condensate Bragg interferometry
- Guest Speaker
- Dr. Mark Edwards
- Guest Affiliation
- Georgia Southern University, Department of Physics
- Guest Affiliation Url
- http://www.georgiasouthern.edu/
- Host
- Dr. Chad Fertig
- When
- Thursday, September 9, 2010 4:00 pm - 5:00 pm
- Location
- Physics 202
- Details
-
Quantum computers use the interferences of different computational paths to enhance correct outcomes. Quantum computation can be viewed as multi-particle computational interference [1]. I will describe how quantum circuits can be mapped to interferometry experiments performed on Bose-Einstein condensates (BECs) using Bragg pulses. I further describe an extension to an approach, originally developed to prototype Bragg interferometry of BECs [2], to describe new interferometers inspired by quantum information concepts. This approach follows ideas recently introduced in neutron inter- ferometry [3]. Using techniques that have been well calibrated by experiments in con- ventional BEC interferometry [2], experiments associated with some simple quantum circuits using the prototyping method mentioned above are modeled. We prototype ex- tensions to standard Mach-Zehnder configurations, analogous to the four-blade designs of neutron interferometry.
[1] R. Cleve, et al., Proc. R. Soc. Lond. A 454 339 (1998)
[2] J. E. Simsarian, et al., Phys. Rev. Lett. 85, 2040 (2000)
[3] D. A. Pushin, M. Arif, and D. G. Cory, Phys. Rev. A 79, 053635, (2009)