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...
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...
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...
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...
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...
