2025 CAP Congress / Congrès de l'ACP 2025

Session

(DQI) M2-5 Quantum Information I | Information quantique I (DIQ)

M2-5

9 Jun 2025, 14:15

Conveners

(DQI) M2-5 Quantum Information I | Information quantique I (DIQ)

• Thomas Baker (Department of Physics & Astronomy and also of Chemistry, University of Victoria)

238. Nonunitary operators in quantum information and distributed quantum computing

Steven Rayan (quanTA Centre / University of Saskatchewan)

09/06/2025, 14:15

Division for Quantum Information / Division de l'information quantique (DQI / DIQ)

Invited Speaker / Conférencier(ère) invité(e)

In this talk, we will consider quantum-information-theoretic settings in which nonunitary operators arise naturally, including 2-dimensional extensions of the ZX-calculus. We apply this perspective to scenarios in distributed quantum computing and quantum networking where the actualization of asynchronous, low-latency quantum communication protocols necessitates nonunitary gates for correct...

126. Extracting Entangled Pulses from Continuous-Wave Photon Sources

Christopher Kallio (Simon Fraser University)

09/06/2025, 14:45

Division for Quantum Information / Division de l'information quantique (DQI / DIQ)

Oral Competition (Graduate Student) / Compétition orale (Étudiant(e) du 2e ou 3e cycle)

Squeezed light is a versatile resource for optical quantum computing, sensing, and communication. However, light sources usually require extensive and precise optimization for generating a pulse with the desired shape, resulting in inflexible state preparation. In our work, we address this problem by presenting a protocol for extracting pure squeezed states with arbitrary pulse shape by...

169. Discrete-Variable-Assisted Error Correction of Continuous-Variable Quantum Information

Neginossadat Razian (Simon Fraser University)

09/06/2025, 15:00

Division for Quantum Information / Division de l'information quantique (DQI / DIQ)

Oral Competition (Graduate Student) / Compétition orale (Étudiant(e) du 2e ou 3e cycle)

Quantum information can be encoded as continuous wave functions in bosonic modes, but implementing error correction for such continuous-variable (CV) information remains a significant challenge. In this work, we propose a novel CV quantum error correction (QEC) scheme that leverages auxiliary discrete-variable (DV) systems as resources. By applying appropriate hybrid CV-DV coupling, we show...

174. Continuous-Variable Analogue of Measurement-Based State Preparation for GKP Encoded States

Fariba Hosseinynejad (Department of Physics and Astronomy, University of Calgary)

09/06/2025, 15:15

Division for Quantum Information / Division de l'information quantique (DQI / DIQ)

Oral Competition (Graduate Student) / Compétition orale (Étudiant(e) du 2e ou 3e cycle)

Quantum error correction (QEC) is essential for fault-tolerant quantum computing, protecting quantum information from noise and decoherence. The Gottesman-Kitaev-Preskill (GKP) encoding is a leading QEC scheme in continuous-variable (CV) quantum computing, offering robustness against displacement errors. However, a major challenge in GKP encoding is efficiently generating non-Pauli...

186. Survey of all additive quantum codes for small systems via graphs

Mohsen Mehrani (University of Calgary)

09/06/2025, 15:30

Division for Quantum Information / Division de l'information quantique (DQI / DIQ)

Oral Competition (Graduate Student) / Compétition orale (Étudiant(e) du 2e ou 3e cycle)

Scalable, fault-tolerant quantum computing depends on the development of efficient quantum error correction codes. While many good quantum low-density parity-check (qLDPC) codes have been introduced, there is still potential to discover better ones, particularly for small numbers of qubits relevant to the current era of noisy intermediate-scale quantum devices. This research systematically...