Robustness of quantum Fourier transform interferometry

Abstract

We analyse the effect of decoherence and noise on quantum Fourier transform interferometry, in which a boson sampling photonic network is used to measure optical phase gradients. This novel type of metrology is shown to be robust against phase decoherence. One can also measure gradients using lower order correlations without substantial degradation. Our results involve estimation of up to a 100 x 100 matrix permanent.

Amended version

References in corpus (4)

• Linear Optical Quantum Metrology with Single Photons: Exploiting Spontaneously Generated Entanglement to Beat the Shot-Noise Limit
• Multiphoton interference in quantum Fourier transform circuits and applications to quantum metrology
• Simulating and assessing boson sampling experiments with phase-space representations
• Coherent states in projected Hilbert spaces

Cited by in corpus (6)

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• Quantum supremacy of the many-body fluctuations in the occupations of the excited particle states in a Bose-Einstein-condensed gas
• Multi-time correlations in the positive-P, Q, and doubled phase-space representations
• Initial states and apodisation for quantum field simulations in phase-space