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Biphoton frequency comb (BFC) having quantum entanglement in a high dimensional system is widely applicable to quantum communication and quantum computation. However, a dozen mode realized so far has not been enough to realize its full potential. Here, we show a massive-mode BFC with polarization entanglement experimentally realized by a nonlinear optical waveguide resonator. The generated BFC at least 1400 modes is broad and dense, that strongly enhances the advantage of BFC. We also demonstrated a versatile property of the present BFC, which enables us to prepare both the frequency-multiplexed entangled photon pair and the high dimensional hyperentangled one. The versatile, stable and highly efficient system with the massive-mode BFC will open up a large-scale photonic quantum information platform.
Qubit entanglement is a valuable resource for quantum information processing, where increasing its dimensionality provides a pathway towards higher capacity and increased error resilience in quantum communications, cluster computation and quantum pha
Phase modulation has emerged as a technique to create and manipulate high-dimensional frequency-bin entanglement. A necessary step to extending this technique to depolarized channels, such as those in a quantum networking environment, is the ability
Quantum entanglement is a fundamental resource for secure information processing and communications, where hyperentanglement or high-dimensional entanglement has been separately proposed towards high data capacity and error resilience. The continuous
Orthogonality of two-photon polarization states belonging to a single frequency and spatial mode is demonstrated experimentally, in a generalization of the well-known anti-correlation dip experiment.
We demonstrate optical interferometry beyond the limits imposed by the photon wavelength using triggered entangled photon pairs from a semiconductor quantum dot. Interference fringes of the entangled biphoton state reveals a periodicity half of that