Grants and Contributions:

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Title:

Entanglement distillation using frequency-comb-assisted polarization-frequency CNOT gates (EDFG)

Agreement Number:

1041096

Agreement Value:

$476,696.00

Agreement Date:

Mar 20, 2026 - Jul 30, 2029

Description:

Entanglement distribution is a key function required by a quantum network. For longdistance networks, quantum information is typically carried by the polarization of photons and transmitted over optical fibres. Polarization entanglement, while convenient to produce and detect, degrades over long distances in optical fibres. The project will explore a new entanglement distillation method, using polarization-frequency hyperentanglement, for improving the quality of the entangled photons after distribution. The proposed method efficiently “distills” the polarization entanglement by performing a control-not (CNOT) operation between the polarization qubit and the frequency qubit, using a sum-frequency generation scheme. This new scheme eliminates a major noise source, allows for more efficient entanglement distillation, and is more robust. The method requires pulsed lasers emitting at multiple stable frequencies to perform the necessary frequency conversions. Working together the team will develop a novel entanglement distillation technology based on the NRC-home-made quantum-dot coherent comb lasers.

Organization:

National Research Council Canada

Expected Results:

In the short term, anticipated outcomes will be strengthened collaborations across industry, academia, and government to support research excellence. In the medium term, anticipated outcomes will be the development of new and potentially disruptive technologies with collaborators. In the long term, find collaborative solutions to public policy challenges and create stronger innovation systems.

Location:

Toronto, Ontario, CA M5S 1S8

Reference Number:

172-2025-2026-Q4-1041096

Agreement Type:

Grant

Report Type:

Grants and Contributions

Recipient Business Number:

108162330

Recipient Type:

Academia

Recipient's Legal Name:

The Governing Council of the University of Toronto

Federal Riding Name:

University--Rosedale

Federal Riding Number:

35112

Program:

Collaborative Science, Technology and Innovation Program - Collaborative R&D Initiatives

Program Purpose:

Collaborate on multiparty research and development programs to catalyze transformative, high-risk, high-reward research with the potential for game-changing scientific discoveries and technological breakthroughs in priority areas.

NAICS Code:

541710 - R&D in the physical, engineering and life sciences