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Asymmetric de Finetti Theorem for Infinite-dimensional Quantum Systems
Murphy Yuezhen Niu
The de Finetti representation theorem for continuous variable quantum system is first developed to approximate an N-partite continuous variable quantum state with a convex combinat…
Finite-key analysis for time-energy high-dimensional quantum key distribution
Murphy Yuezhen Niu, Feihu Xu, Fabian Furrer +1
Time-energy high-dimensional quantum key distribution (HD-QKD) leverages the high-dimensional nature of time-energy entangled biphotons and the loss tolerance of single-photon dete…
Unity-Efficiency Parametric Down-Conversion via Amplitude Amplification
Murphy Yuezhen Niu, Barry C. Sanders, Franco N. C. Wong +1
We propose an optical scheme, employing optical parametric down-converters interlaced with nonlinear sign gates (NSGs), that completely converts an -photon Fock-state pump to $n…