Teleported CNOT Gate in a Mixed-Species Trapped-Ion System

Stephen D Erickson; Yong Wan; Daniel Kienzler; Karl Mayer; Ting Rei Tan; Jenny Wu; Hilma Vasconcelos; Scott Glancy; Emanuel H Knill; David J Wineland; Andrew C Wilson; Dietrich Leibfried

Teleported CNOT Gate in a Mixed-Species Trapped-Ion System

ORAL

Abstract

Scaling up quantum information processing (QIP) can be aided by distributing qubits across multiple processing zones. Universal quantum computation across such an architecture will require entangling gates between qubits in separate zones. Quantum gate teleportation achieves this, requiring only local operations within each zone, a single entangled ancilla pair split between the two zones, and classical communication. Using this protocol, we demonstrate a teleported CNOT gate between two spatially separated ⁹Be⁺ ions by means of a split entangled pair of ²⁵Mg⁺ ions and measure an entanglement fidelity in the interval (0.845, 0.872) at the 95% confidence level. Our demonstration combines many important tools for scaling trapped-ion QIP, including ion separation and shuttling, individually addressed single qubit rotations and detections, same- and mixed-species entangling gates, and real-time conditional feedforward operations.

March 2, 2020, 12:12 PM – March 2, 2020, 12:24 PM

Presenters

Stephen D Erickson

Time & Frequency Division, National Institute of Standards and Technology Boulder, National Institute of Standards and Technology

Authors

Stephen D Erickson

Time & Frequency Division, National Institute of Standards and Technology Boulder, National Institute of Standards and Technology
Yong Wan

National Institute of Standards and Technology
Daniel Kienzler

National Institute of Standards and Technology
Karl Mayer

NIST, National Institute of Standards and Technology
Ting Rei Tan

National Institute of Standards and Technology
Jenny Wu

Time & Frequency Division, National Institute of Standards and Technology Boulder, National Institute of Standards and Technology
Hilma Vasconcelos

National Institute of Standards and Technology
Scott Glancy

National Institute of Standards and Technology
Emanuel H Knill

NIST, National Institute of Standards and Technology
David J Wineland

University of Oregon, Eugene, National Institute of Standards and Technology
Andrew C Wilson

Time & Frequency Division, National Institute of Standards and Technology Boulder, National Institute of Standards and Technology Boulder, National Institute of Standards and Technology, Boulder, National Institute of Standards and Technology
Dietrich Leibfried

Time & Frequency Division, National Institute of Standards and Technology Boulder, National Institute of Standards and Technology Boulder, Time and Frequency Division, NIST, Boulder, National Institute of Standards and Technology, Boulder, National Institute of Standards and Technology