The Improvement of Quantum Steering in Two Mode Squeezed Vacuum State by Non-Gaussian Operation
Quantum Steering is one of the key resources in quantum information processing,providing inherent asymmetry that enhances security and enables a wide range of applications.However,the presence of photon loss can diminish the steerability of quantum systems,thereby impacting their performance.The non-Gaussian operation(photon number-conserving)is used to a two-mode squeezed vacuum state to effectively enhance its quantum guidance.Using the covariance matrix to measure Quantum Steering,the improvement of one-way and two-way Quantum Steering in the presence of unilateral noise is examined when photon number conservation is implemented.The study showes that photon number conservation not only enhances the steerability of the two-mode squeezed vacuum state but also maintains bidirectional steering under higher loss conditions.
万方数据
维普
