The University of New Mexico

Xanadu Quantum Technologies Inc.

Rafael Alexander

Ish Dhand

Zheshen Zhang

Krishnakumar Sabapathy

Saikat Guha

Bo-Han Wu

Shuai Liu

Angela Karanjai

Guillaume Dauphinais

Takaya Matsuura

Ilan Tzitrin

Blayney Walshe

Giacomo Pantaleoni

Ben Baragiola

Joseph Eli Bourassa

Nick Menicucci

Nicolas Menicucci

A scalable platform for generating time-frequency-multiplexed cluster states and utilizing them for large-scale quantum computing. Kerr microcombs and continuous-variable (CV) quantum information are used to formulate a one-way quantum computing architecture that can accommodate hundreds of simultaneously addressable entangled optical modes multiplexed in the frequency domain and an unlimited number of sequentially addressable entangled optical modes in time domain. One-dimensional, two-dimensional, and three-dimensional CV cluster states can be deterministically produced using robust integrated photonic circuit technology is leveraged that is readily available and experimentally viable.

Quantum-computing architecture based on multi-dimensional continuous-variable cluster states in a scalable platform

Applying Gottesman-Kitaev-Preskill (GKP) error correction to Gaussian input states, such as vacuum, produces distillable magic states, achieving universality without additional non-Gaussian elements. Gaussian operations are sufficient for fault-tolerant, universal quantum computing given a supply of GKP-encoded Pauli eigenstates.

System and methods for producing magic states for universal quantum computation using GKP error correction

A system for scalable, fault-tolerant photonic quantum computing includes multiple optical circuits, multiple photon number resolving detectors (PNRs), a multiplexer, and an integrated circuit (IC). During operation, the optical circuits generate output states via Gaussian Boson sampling (GBS), and the PNRs generate qubit clusters based on the output states. The multiplexer multiplexes the qubit clusters and replaces empty modes with squeezed vacuum states, to generate multiple hybrid resource states. The IC stitches together the hybrid resource states into a higher-dimensional cluster state that includes states for fault-tolerant quantum computation.

Scalable photonic quantum computing with hybrid resource states

Growing community of inventors

Albuquerque, NM, United States of America

Rafael Alexander