Continuous-Variable Quantum Computing in Optical Time-Frequency Modes using Quantum Memories

Abstract

We develop a scheme for time-frequency encoded continuous-variable cluster-state quantum computing using quantum memories. In particular, we propose a method to produce, manipulate and measure 2D cluster states in a single spatial mode by exploiting the intrinsic time-frequency selectivity of Raman quantum memories. Time-frequency encoding enables the scheme to be extremely compact, requiring a number of memories that is a linear function of only the number of different frequencies in which the computational state is encoded, independent of its temporal duration. We therefore show that quantum memories can be a powerful component for scalable photonic quantum information processing architectures.

5 pages, 6 figures, and supplementary information. Updated to be consistent with published version

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Cited by in corpus (5)

• Frequency-encoded photonic qubits for scalable quantum information processing
• Wavevector multiplexed quantum memory via spatially-resolved single-photon detection
• Einstein-Podolsky-Rosen paradox in a hybrid bipartite system
• Sorting photon wave packets using temporal-mode interferometry based on multiple-stage quantum frequency conversion
• Storage of polarization-entangled THz-bandwidth photons in a diamond quantum memory