Blueprint for a Scalable Photonic Fault-Tolerant Quantum Computer
By J. Bourassa, Rafael N. Alexander, M. Vasmer, A. Patil, I. Tzitrin, Takaya Matsuura, D. Su, B. Baragiola, Saikat Guha, G. Dauphinais and 3 more. Quantum, 2020
344 citations recorded by the source corpus.
Photonics is the platform of choice to build a modular, easy-to-network quantum computer operating at room temperature. However, no concrete architecture has been presented so far that exploits both the advantages of qubits encoded into states of light and the modern tools for their generation. Here we propose such a design for a scalable fault-tolerant photonic quantum computer informed by the latest developments in theory and technology. Central to our architecture is the generation and manipulation of three-dimensional resource states comprising both bosonic qubits and squeezed vacuum states. The proposal exploits state-of-the-art procedures for the non-deterministic generation of bosonic qubits combined with the strengths of continuous-variable quantum computation, namely the implementation of Clifford gates using easy-to-generate squeezed states. Moreover, the architecture is based on two-dimensional integrated photonic chips used to produce a qubit cluster state in one temporal and two spatial dimensions. By reducing the experimental challenges as compared to existing architectures and by enabling room-temperature quantum computation, our design opens the door to scalable fabrication and operation, which may allow photonics to leap-frog other platforms on the path to a quantum computer with millions of qubits.
Subfields: Artificial Intelligence
View Paper: https://www.semanticscholar.org/paper/1191b82f077d26d58fd446238f7b52901caad45e
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In Artificial Intelligence
Citations in the corpus
- Harnessing the Power of the Second Quantum Revolution (2020, background): “Such encoding shows increasing promise, providing error resilience that leverages the particular hardware capabilities [72, 112].”
- Quantum computational advantage with a programmable photonic processor (2022, background): “…system), the successful use in our machine of several phase-stabilized fibre loops to act as effective buffer memory for quantum modes is a strong statement on the viability of this technique, which is a requirement in many proposed architectures for fault-tolerant photonic quantum computers 9–11 ,”