Reprogrammable and high-precision holographic optical addressing of trapped ions for scalable quantum control
Abstract
High-precision, individually programmable manipulation of quantum particles is crucial for scaling up quantum information processing (QIP) systems such as laser-cooled trapped-ions. However, restricting undesirable “crosstalk” in optical manipulation of ion qubits is fundamentally challenging due to micron-level inter-ion separation. Further, inhomogeneous ion spacing and high susceptibility to aberrations at UV wavelengths suitable for most ion-species pose severe challenges. Here, we demonstrate high-precision individual addressing (λ = 369.5 nm) of Yb+ using a reprogrammable Fourier hologram. The precision is achieved through in-situ aberration characterization via the trapped ion, and compensating (to λ/20) with the hologram. Using an iterative Fourier transformation algorithm (IFTA), we demonstrate an ultra-low (−4) intensity crosstalk error in creating arbitrary pair-wise addressing profiles, suitable for over fifty ions. This scheme relies on standard commercial hardware, can be readily extended to over a hundred ions, and adapted to other ion-species and quantum platforms.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Apr 08, 2021
- Source ID
- 10.1038/s41534-021-00396-0
Entities
People
- Chung-You Shih
- Manas Sajjan
- Nikhil Kotibhaskar
- Rajibul Islam
- Roland Hablützel
- Sainath Motlakunta
Organizations
- Army Research Office
- Canada First Research Excellence Fund
- Innovation, Science and Economic Development Canada
- Natural Sciences and Engineering Research Council
- University of Waterloo