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We present a network switch in the silicon-on-insulator platform capable of redistributing light to arbitrary outputs with continuously reconfigurable splitting ratios. We demonstrate software defined switching and physical-layer multicast of gigabit Ethernet.
A large-scale tunable-coupling ring resonator array is demonstrated in a CMOS-compatible silicon photonics platform to achieve tunable frequency-dependent group delay. The system is proposed for a phase-encoded quantum data locking protocol.
Quantum random walks (QRWs) implemented in photonic media have seen significant recent attention for their applicability to problems in quantum simulation and quantum transport. However, performing statistically robust and high-fidelity studies of these problems has required either manual tuning of optical elements or the fabrication of multiple integrated photonic chips. Here, we present our recent...
We present an architecture for programmable nanophotonic processors capable of arbitrary discrete transformations for quantum and classical applications. A method to combat fabrication imperfections with high fidelity is discussed along with initial experimental results.
We present a security analysis against collective attacks for a time–energy entanglement-based quantum key distribution protocol, given the practical constraints of single-photon detector efficiency, channel loss, and finite-key considerations. We find a positive secure-key capacity when the key length increases beyond $$10^{4}$$ 10 4 for eight-dimensional systems. The minimum key length...
We implement a high-dimensional quantum key distribution protocol secure against collective attacks. We transform between conjugate measurement bases using group velocity dispersion. We obtain > 3 secure bits per photon coincidence.
We demonstrate an over-80-fold enhancement of an NV's zero-phonon line emission inside cavity in the Purcell regime within a high-purity, electronic-grade diamond substrate. This system is a promising building block for quantum networks.
We introduce a reconfigurable silicon quantum photonic network for implementing general linear optics transformations in the spatial mode basis. This network enables implementation of a range of quantum algorithms; we discuss the phase estimation algorithm.
We have observed that temporally-correlated photon pairs, experiencing multi-frequency-channel, opposite dispersion, yield double coincidence peaks. We present and compare theoretical and experimental results.
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