2D Linear Trap Array for Quantum Information Processing

Abstract

An ion‐lattice quantum processor based on a two‐dimensional arrangement of linear surface traps is presented. The design features a tunable coupling between ions in adjacent lattice sites and a configurable ion‐lattice connectivity, allowing one, for example, to realize rectangular and triangular lattices with the same trap chip. Detailed trap simulations of a simplest‐instance ion array with 2 × 9 trapping sites are presented and the fabrication of a prototype device in an industrial facility is reported on. The design and the employed fabrication processes are scalable to larger array sizes. Trapping of ions in rectangular and triangular lattices and transport of a 2 × 2 ion‐lattice over one lattice period are demonstrated.

Numerical analysis of pulsed extraction of ions from a 16-Pole / 16-Wire ion trap for time-of-flight mass spectrometry

“…The idea of three-dimensional confinement of charged particles using electromagnetic fields continuously evolved and was established in various areas of experimental physics [1][2][3][4][5][6][7][8]. Multipole radiofrequency (RF) ion traps are ion-confining devices routinely employed to store and manipulate atomic and molecular ions to study their structure, spectra, and interactions with photons, other atoms, or molecules.…”

“…Such traps find extensive applications in high-precision spectroscopy, mass spectroscopy, fluorescence spectroscopy, and reaction rate measurements of ion-molecule interactions [3,[9][10][11][12][13][14]. Besides these, the ion trapping technique attracts the attention of quantum information processing and quantum metrology since it can produce ions in wellcontrolled quantum states [5][6][7]15].…”

Industrially microfabricated ion trap with 1 eV trap depth

“…In the first approach [13,14], separated ion trap modules are interfaced by establishing entanglement through photonic links, an approach that will eventually place strong demands on the reproducibility of traps that must operate reliably in many different setups. The second approach uses multiple trapping zones situated in a single trap structure [15][16][17][18][19], where zones are interfaced by shuttling ions between them using voltages applied to segmented electrodes [20][21][22]. Scaling up using these approaches has been challenging due to its complexity: the realization of precisely fabricated trap structures with large numbers of electrodes, and the task of wiring these up and controlling them.…”

Deterministic loading of a single strontium ion into a surface electrode trap using pulsed laser ablation

“…To date, it is known that surface contamination of trapping electrodes may result in unwanted heating of ions' motion [15] and/or in formation of patch potential that significantly changes the ions' position. In this regard, conventional methods of generating atomic ions such as electron impact ionization and photoionization combined with an atomic oven [16] result in significant degradation of ultra-high vacuum environment, difficulty in heat management and surface degradation that hinders the stable loading of ions [17]. A cleaner method of ion loading technique with minimal thermal footprint is anticipated both in terms of preserving ions' motional coherence and long-term stability of the system.…”