High-dimensional Frequency-Encoded Quantum Information Processing with Passive Photonics and Time-Resolving Detection
arXiv:2007.07386 · doi:10.1103/PhysRevLett.124.190502
Abstract
In this Letter, we propose a new approach to process high-dimensional quantum information encoded in a photon frequency domain. In contrast to previous approaches based on nonlinear optical processes, no active control of photon energy is required. Arbitrary unitary transformation and projection measurement can be realized with passive photonic circuits and time-resolving detection. A systematic circuit design for a quantum frequency comb with arbitrary size has been given. The criteria to verify quantum frequency correlation has been derived. By considering the practical condition of detector's finite response time, we show that high-fidelity operation can be readily realized with current device performance. This work will pave the way towards scalable and high-fidelity quantum information processing based on high-dimensional frequency encoding.
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- Linear-optical fusion boosted by high-dimensional entanglement
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- Harnessing Hybrid Frequency-Entangled Qudits through Quantum Interference