High-fidelity readout scheme for rare-earth solid-state quantum computing

Andreas Walther, Lars Rippe, Ying Yan, Jenny Karlsson, Diana Serrano, Adam Nilsson, Samuel Bengtsson, Stefan Kröll

Forskningsoutput: TidskriftsbidragArtikel i vetenskaplig tidskriftPeer review


We propose and analyze a high-fidelity readout scheme for a single-instance approach to quantum computing in rare-earth-ion-doped crystals. The scheme is based on using different elements as qubit and readout ions, where the readout ions are doped into the material at a much lower concentration than the qubit ions. It is shown that by allowing the qubit ion sitting closest to a readout ion to act as a readout buffer, the readout error can be reduced by more than an order of magnitude. The scheme is shown to be robust against certain experimental variations, such as varying detection efficiencies, and we use the scheme to predict the attainable quantum fidelity of a controlled NOT (CNOT) gate in these solid-state systems. In addition, we discuss the potential scalability of the protocol to larger qubit systems. The results are based on parameters which we believe are experimentally feasible with current technology and which can be simultaneously realized.
TidskriftPhysical Review A (Atomic, Molecular and Optical Physics)
StatusPublished - 2015

Ämnesklassifikation (UKÄ)

  • Atom- och molekylfysik och optik


Utforska forskningsämnen för ”High-fidelity readout scheme for rare-earth solid-state quantum computing”. Tillsammans bildar de ett unikt fingeravtryck.

Citera det här