Loss-tolerant cross-Kerr enhancement via modulated squeezing

科学分野:

• Quantum optics
• Quantum information science
• Photonic quantum computing

背景:

• Cross-Kerr interactions are crucial for photonic quantum computing.
• Enhancing these interactions is key to improving gate speeds and reducing errors.
• Current methods face limitations in efficiency and scalability.

研究 の 目的:

• To develop novel squeezing protocols for enhancing cross-Kerr interactions.
• To apply these protocols to accelerate the implementation of controlled phase gates.
• To analyze the performance of these protocols concerning gate error and photon loss.

主な方法:

• Alternating squeezing along different quadratures of a single photonic mode.
• Developing theoretical bounds for squeezing strength and speed required for specific gate errors.
• Investigating the resilience of protocols against photon loss.

主要な成果:

• Generic amplification of cross-Kerr interaction strength demonstrated.
• Established bounds for achieving desired gate fidelity with single-mode squeezing.
• Protocols shown to be robust against photon loss.

結論:

• Squeezing protocols offer a viable route to enhance cross-Kerr interactions.
• Accelerated deterministic implementation of controlled phase gates is achievable.
• Experimental realization in optical fibers and nanophotonic waveguides is feasible.