TY - JOUR
T1 - Blueprint for a scalable photonic fault-tolerant quantum computer
AU - Eli Bourassa, J.
AU - Alexander, Rafael N.
AU - Vasmer, Michael
AU - Patil, Ashlesha
AU - Tzitrin, Ilan
AU - Matsuura, Takaya
AU - Su, Daiqin
AU - Baragiola, Ben Q.
AU - Guha, Saikat
AU - Dauphinais, Guillaume
AU - Sabapathy, Krishna K.
AU - Menicucci, Nicolas C.
AU - Dhand, Ish
N1 - Funding Information:
J.E.B. is supported through an Ontario Graduate Scholarship, the Lachlan Gilchrist Fellowship, and by Mi-tacs through the Mitacs Accelerate program grant. I.T. is supported through by an Ontario Graduate Scholarship and a Mitacs Accelerate program grant. We thank Z. Vernon for many suggestions in the design of the architecture, M. Collins, D. Mahler, B. Morrison and D. Phillips for valuable discussions about hardware aspects of the architecture, J. M. Arrazola, L. G. Helt, F. Laudenbach, N. Quesada, M. Schuld and C. Weed-brook for a careful proofreading, and P. Dhara and J. M. Arrazola for their assistance with the figures. Research at Perimeter Institute is supported in part by the Government of Canada through the Department of Innovation, Science and Economic Development Canada and by the Province of Ontario through the Ministry of Colleges and Universities. This research was enabled in part by support provided by Compute Ontario (www.computeontario.ca) and Compute Canada (www.computecanada.ca).
Publisher Copyright:
© 2021 American Society of Clinical Oncology. All Rights Reserved.
PY - 2021/2/4
Y1 - 2021/2/4
N2 - 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.
AB - 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.
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U2 - 10.22331/Q-2021-02-04-392
DO - 10.22331/Q-2021-02-04-392
M3 - Article
AN - SCOPUS:85102342968
VL - 5
SP - 1
EP - 38
JO - Quantum
JF - Quantum
SN - 2521-327X
ER -