Physics – Quantum Physics
Scientific paper
2010-08-12
Physics
Quantum Physics
195 pages, single spaced; PhD thesis, University of Colorado, December 2008
Scientific paper
Quantum-mechanical principles can be used to process information (QIP). In one approach, linear arrays of trapped, laser cooled ion qubits (two-level quantum systems) are confined in segmented multi-zone electrode structures. The ion trap approach to QIP requires trapping and control of numerous ions in electrode structures with many trapping zones. I investigated microfabrication of structures to trap, transport and couple large numbers of ions. Using 24Mg+ I demonstrated loading and transport between zones in microtraps made of boron doped silicon. This thesis describes the fundamentals of ion trapping, the characteristics of silicon-based traps amenable to QIP work and apparatus to trap ions and characterize traps. Microfabrication instructions appropriate for nonexperts are included. Ion motional heating was measured. <<>> Using MEMs techniques I built a Si micro-mechanical oscillator and demonstrated a method to reduce the kinetic energy of its lowest order mechanical mode via capacitive coupling to a driven radio frequency (RF) oscillator. Cooling resulted from a RF capacitive force, phase shifted relative to the cantilever motion. The technique was demonstrated by cooling the 7 kHz fundamental mode from room temperature to 45 K. <<>> I also discuss an implementation of the semiclassical quantum Fourier transform (QFT) using three beryllium ion qubits. The QFT is a crucial step in a number of quantum algorithms including Shor's algorithm, a quantum approach to integer factorization which is exponentially faster than the fastest known classical factoring algorithm. This demonstration incorporated the key elements of a scalable ion-trap architecture for QIP.
No associations
LandOfFree
Microfabrication techniques for trapped ion quantum information processing does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Microfabrication techniques for trapped ion quantum information processing, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Microfabrication techniques for trapped ion quantum information processing will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-502482