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Applying Gaussian quantum discord to quantum key distribution
- Xiaolong Su
- Physics, Computer Science
- 16 October 2013
In this paper, we theoretically prove that the Gaussian quantum discord state of optical field can be used to complete continuous variable (CV) quantum key distribution (QKD). The calculation shows…
Gate sequence for continuous variable one-way quantum computation
The experiment demonstrates the feasibility of implementing Gaussian quantum computation by means of accessible gate sequences and presents the first continuous variable gate sequence consisting of a single-mode squeezing gate and a two-mode controlled-phase gate based on a six-mode cluster state.
Experimental demonstration of unconditional entanglement swapping for continuous variables.
The unconditional entanglement swapping for continuous variables is experimentally demonstrated. Two initial entangled states are produced from two nondegenerate optical parametric amplifiers…
Quantum Entanglement Swapping between Two Multipartite Entangled States.
- Xiaolong Su, Caixing Tian, Xiaowei Deng, Qiang Li, C. Xie, K. Peng
- PhysicsPhysical review letters
- 6 December 2016
An experimental demonstration of the entanglement swapping between two independent multipartite entangled states, each of which involves a tripartite Greenberger-Horne-Zeilinger (GHZ) entangled state of an optical field, provides a feasible technical reference for constructing more complicated quantum networks.
Experimental preparation of eight-partite cluster state for photonic qumodes.
This Letter presents what it believes is the first experimental demonstration of an eight-partite spatially separated continuous variable (CV) cluster state of optical modes prepared via the linearly optical transformation of eight squeezed states of light.
Preparation of multipartite entangled states used for quantum information networks
The preparation of multipartite entangled states is the prerequisite for exploring quantum information networks and quantum computation. In this paper, we review the experimental progress in the…
Continuous variable quantum key distribution based on optical entangled states without signal modulation
In this paper, we present the first experimental demonstration on continuous variable quantum key distribution using determinant Einstein-Podolsky-Rosen entangled states of optical field. By means of…
Manipulating the direction of Einstein-Podolsky-Rosen steering
Einstein-Podolsky-Rosen (EPR) steering exhibits an inherent asymmetric feature that differs from both entanglement and Bell nonlocality, which leads to one-way EPR steering. Although this oneway EPR…
Deterministic quantum teleportation through fiber channels
The deterministic teleportation of optical modes over a 6.0-km fiber channel is realized with continuous variable entanglement and a fidelity of 0.03 for the retrieved quantum state, which breaks through the classical limit of 1/2.
Quantum network based on non-classical light
- Xiaolong Su, Meihong Wang, Zhihui Yan, X. Jia, C. Xie, K. Peng
- PhysicsScience China Information Sciences
- 9 July 2020
The experimental progresses in building quantum network based on optical field are reviewed, the challenges toward a quantum Internet are discussed and the proposed solution to this problem is discussed.